Mini split air conditioners are a growing trend of a do it yourself cooling and heating option among homeowners. The benefit of a 110-120 volt mini split is that it uses normal household electricity so there is no need to install special 220V wiring.
These systems are ideal in garages, bonus rooms, workshops or any area where you need effective climate control without the need of adding new electrical circuits.
In this guide, we will compare the 110V mini split systems that are the best on Amazon and can be installed by a DIY person.
We pay attention to such important characteristics as cooling/heating power, energy efficiency (SEER2 ratings), smart connectivity, and installation. Others are even pre-charged and ready to set up DIY with no need to vacuum them, and some are a great deal as long as you do not mind a little more work.
The table below compares our best choices, and we have a breakdown of each model.
| Mini Split System | Capacity (BTU) | Efficiency (SEER2) | Special Features | DIY Installation |
|---|---|---|---|---|
| MRCOOL DIY 4th Gen 12,000 BTU | 12,000 BTU (up to ~500–600 sq ft) | ~20.5 SEER2 (≈22 SEER) | WiFi Smart Control; -13°F Heating; Energy Star | Easy DIY: Pre-charged quick-connect |
| Klimaire DIY 12,000 BTU | 12,000 BTU (up to ~500–600 sq ft) | 19 SEER2 | Smartphone App; -13°F Heating; Complete Kit | Easy DIY: Pre-charged quick-connect |
| Senville LETO 12,000 BTU | 12,000 BTU (up to ~600 sq ft) | 20.8 SEER2 | Alexa Enabled; Heat Pump (to 5°F); 5-yr Warranty | Standard: Pro install recommended |
| Pioneer Diamante 12,000 BTU | 12,000 BTU (up to ~500 sq ft) | 19 SEER2 | Quiet Operation; Reliable Brand; Optional WiFi | Standard: Pro install recommended |
| Cooper & Hunter Sophia 9,000 BTU | 9,000 BTU (up to ~400 sq ft) | 25 SEER (21.5 SEER2 for 12k) | Low-temp Heat (-13°F); WiFi Adapter; 7-yr Warranty | Standard: Pro install required for warranty |
| DELLA Motto 12,000 BTU | 12,000 BTU (up to ~550 sq ft) | 20 SEER2 | Budget Friendly; WiFi (Alexa); R32 Refrigerant | Standard: Vacuum & setup needed |
| COSTWAY Blast 12,000 BTU | 12,000 BTU (up to ~750 sq ft) | 20 SEER2 | Affordable; Self-Cleaning; 4D Auto Swing | Standard: Vacuum & setup needed |
Why Choose a 110V Mini Split for DIY?
Mini splits 110-120V can be used on normal household circuits, which is why they are suitable to DIYers. A 115V mini split may be able to be hooked up to an existing outlet or standard breaker (although a dedicated circuit is preferable to be safe).
This implies fewer electrical work and possible reduced cost of installation. The do-it-yourselfers like the fact that they do not have to call an electrician to install a 240V line.
Besides electrical convenience, most of these units are sold as complete kits with pre-charged refrigerant line sets. The system can be installed using a pre-charged plug-and-play line set so that you do not need special HVAC tools (no vacuum pump or gauges).
This renders the installation process to be within the capability of a person with basic handyman skills, which is usually the mounting of the indoor and outdoor units, drilling a hole in which to run the line set, and connecting the parts as per the instructions.
Not every 110V mini split is however DIY-friendly. Our favorites are both true DIY systems (which are still covered by full warranty even when self-installed) and standard mini splits which, although not exactly plug-and-play, can still be handled by a skilled DIYer. In regard to these systems, note:
- BTU Capacity & Room Size: Make sure the BTU cooling/heating capacity of the unit is appropriate to the size of your room. 9,000 BTU is usually sufficient up to 350-400 sq ft and 12,000 BTU (1 ton) is adequate to 500-600 sq ft.
- Energy Efficiency: The higher the SEER2 ratings, the lesser the running costs. Each of our selections is high efficiency (most 19 SEER2 and higher), some even Energy Star rated, so you save money in the long term.
- Heating Capability: In case you intend to use the mini split as a heat pump during winter, ensure that you look at the lowest ambient temperature that it can operate in. There are models that can be rated to heat effectively to -13 o F and thus can be used in cold climates and others that can be used to about 5 o F.
- Smart Features: WiFi and smart assistants (Alexa/Google) can be integrated to provide convenience, enabling remote control and scheduling. We point out the models that come with in-built smart technology.
- Installation & Warranty: Pre-charged, fully DIY units have quick-connect fittings that maintain the seal of the refrigerant. Other models have all the hardware and need vacuuming of the lines and set-up. It is important to note that in the case of those, the manufacturers usually insist on professional installation in order to have the warranty.
So, it is time to take a closer look at the detailed reviews of all recommended 110V mini splits with their advantages and disadvantages and what makes them so special to use in DIY projects.
#1 MRCOOL DIY 12,000 BTU (115V) Ductless Mini Split AC & Heat Pump
The MRCOOL DIY 12,000 BTU is one of the best options to consider by those who want the easiest installation possible. The DIY series by MRCOOL is particularly made to be installed by homeowners without any special tools or HVAC knowledge.
This 4 th Generation model is supplied with a pre-charged condenser and a patented quick-connect line set that screws together easily, no vacuum pump is required and no handling of refrigerant. It is a 115V, 1 ton system that is both cool and heat, so it is a year round solution to rooms up to approximately 500-600 square feet. It is not stingy in performance, though: it is very efficient and even Energy Star certified. Its main characteristics are the following:
- Cooling/Heating Capacity: 12,000 BTU cooling (1 ton) and ~12,000 BTU heating, which is appropriate to the space of about 450-750 sq ft. It is able to maintain a large bedroom, studio or garage workshop at the preferred temperature comfortably.
- Efficiency: The MRCOOL DIY is rated at approximately 22 SEER (20.5 SEER2) making it very efficient. It is Energy Star certified, which means that it has better energy savings. You can expect to pay less on electricity bills than with older AC units, but you will not be losing power.
- Pre-Charged DIY Installation: This is a system that is actually DIY friendly. The outdoor unit is charged with refrigerant and the 25-ft refrigerant line set included has proprietary quick-connect fittings. It is as easy as mounting the units, connecting the line set and cables and you are almost there. You will not have to vacuum the lines, or even call an HVAC tech to charge the system. MRCOOL is easy to install, and most homeowners take a couple of hours to install it.
- Smart Controls: It has an in-built WiFi connectivity with the MRCOOL SmartHVAC module. The AC can be controlled using a smartphone app or connected to Amazon Alexa or Google Assistant to be controlled using voice. It is convenient to schedule and monitor remotely, which is easy to do after the unit is operational.
- Cold Weather Heat Pump: The heat pump can be used to heat even in cold weather, with a rating to -13 o F. This low-ambient performance means that it can be used in most parts in winter where it can be depended upon to give heat when the temperature is low.
- Quiet Operation: People tend to commend MRCOOL because of its silent indoor air handler. The unit has a Whisper-Quiet technology and the sound indoors is usually in the low 20-30 dB range on quiet mode, which is hardly a hum, and it is ideal in bedrooms or offices.
- Warranty: MRCOOL supports DIY installers with a good warranty (registered): generally 5-year parts and 7-year compressor. Distinctively, the warranty is not nullified by doing it yourself, which is an indication of the trust that the manufacturer has in DIY installations. Some packages even have a 1-year labor warranty to give you an extra peace of mind.
Why it is awesome to DIY: The MRCOOL DIY 12k is awesome since it takes out the most difficult aspects of mini split installation. All the electrical connections are simplified (115V plug-in or hardwire to a 20A circuit), and the refrigerant handling is already completed at the factory.
It is slightly more costly than non-DIY units, but you do not have to pay extra to install it and you have a system that is designed to be easy to install. It is the default option when you need an easy to install and a reliable system that will run quietly and efficiently all year round. The only downsides are the initial cost and making sure you have a decent wall opening to fit the bulky quick-connect fittings but that is a minor price to pay to have the convenience.
#2 Klimaire DIY 12,000 BTU (115V) Ductless Mini Split Heat Pump
The Klimaire DIY 12,000 BTU is also a great do-it-yourself friendly mini split kit. Klimaire DIY series offers the same value as MRCOOL: you receive a pre-charged system with quick-connect line sets to make installation easy.
This 115V model provides a full 1 ton of cooling and heating capacity, which is perfect in medium-sized rooms of approximately 400-600 sq ft. Klimaire comes with almost everything you need in the box, so it is a one-stop solution to a self-install. Klimaire DIY is a strong alternative to MRCOOL, especially in case you want to have the no-vacuum installation but are looking to spend a bit less. It is time to mention its features:
- Cooling/Heating Capacity: 12,000 BTU cooling capacity (and about the same heating capacity because it is a heat pump). It will make a living room, big bedroom or workshop cool in summer and warm in winter. The kit will provide single-zone cooling/heating of a medium-sized space.
- Efficiency: This Klimaire unit is rated at 19 SEER2 (approximately 20+ SEER in old rating) and is highly efficient and complies with the 2023 efficiency standards. Although its SEER2 is a little bit lower than the MRCOOL, it is still above the average, which means that it will be cost-efficient to operate and, in most cases, it can be eligible to receive energy rebates or incentives in case they are available.
- Full DIY Installation Kit: Klimaire is proud of a full installation kit. The outdoor condenser is filled with R-410A refrigerant, and it includes a 25-ft pre-charged quick-connect refrigerant line set. This implies that no vacuum pump or refrigerant handling is required, all you need to do is connect the lines with the help of the wrench provided and you are good to go. Also, Klimaire comes with 25-ft pre-wired communication cable (plug-in connectors), indoor mounting bracket, drain hose, and even wall sleeve all the installation accessories you may require. The step-by-step guide and the detailed manual make the process simple to a competent DIYer.
- Smart Features: This system has WiFi-enabled via the Klimaire app (Smart Life/TUYA integration). It can be controlled by a smartphone and even be connected to Alexa or Google Assistant through the app and adjust the temperature and settings. This implies that scheduling and remote monitoring is easily accessible. The remote control included also has all the typical functions (modes, fan speeds, timer, etc.) and an additional temperature sensor feature called Follow Me, which allows to control the climate more accurately at the place where the remote is located.
- Heating & Cold Climate Performance: Klimaire DIY units are designed to be used all year round, and heating mode can be used to -13F ambient. This low temperature feature competes with MRCOOL and guarantees that you will have heat even during extremely cold days. It can be used as a cooling operation even in cold weather (as low as 5 o F) in case you required it as a server room or year round cooling requirement.
- Silent and Dependable: The indoor air handler is very quiet and has an inverter technology that modulates the speed. Users claim that it operates quietly and is appropriate to use in bedrooms or study rooms. Klimaire is a long-established HVAC brand and this DIY series has a reputation of being reliable. The unit is fitted with Toshiba/GMCC compressors which are durable and the unit is ETL and AHRI certified which means that it is safe and performs well in the US.
- Warranty: When registered, the system normally has a 5-year parts and 7-year compressor warranty. Similar to MRCOOL, Klimaire can be installed by the DIYer without losing the warranty (since it is clearly advertised as a DIY product). This is an important advantage because most of the regular mini split warranties are nullified unless they are installed by a professional. Klimaire support network and documentation assist in making sure that you have a support network in case you require assistance during installation or operation.
Why it is so good to DIY: The Klimaire DIY 12k is a cheap DIY mini split, which does not compromise on quality or features. It is usually slightly cheaper than MRCOOL but with an almost identical package: pre-charged quick-connect lines, WiFi control, and powerful heating.
The fact that all the required installation materials (including even such items as the wall bracket and the electrical whip in some packages) are included demonstrates that Klimaire targets the DIY market. It is perfect when the homeowner is sure that he/she can install the units and make electrical connections but does not want to deal with the refrigerant side. Concisely, Klimaire DIY renders self-installation friendly and provides effective comfort. All you have to remember is that the install is DIY-friendly, but you still have to pay attention to the instructions (properly torque the connections, check the leaks, etc.) to have a successful setup.
#3 Senville LETO Series 12,000 BTU (110/120V) Mini Split Air Conditioner & Heat Pump
Senville LETO 12,000 BTU is a well-known option among people who seek the high-quality ductless mini split with smart features at a reasonable price. Senville is a reputable mini split brand that provides a good performance and customer service.
The LETO series 115V model has a cooling and heating capacity of 1 ton, which is ideal to cool a big room or an open-plan space of approximately 600 square feet. It is unique in that it has built-in WiFi and Alexa voice control integration which is not common in this price range. Although Senville LETO is not a quick-connect DIY system (it needs a more conventional method of installation), it has been installed by many do-it-yourself homeowners or with little professional assistance. This is what you should know:
- Cooling/Heating Capacity: 12,000 BTU cooling and heating, enough to cool/heat an average living room, master bedroom or studio. It is a strong unit that can cool off a hot summer day and warm during winter. The indoor blower included is very efficient and the unit is also able to dehumidify and circulate air in fan-only mode.
- Energy Efficiency: The Senville LETO has an excellent 20.8 SEER2 rating (that translates to about 22-23 SEER in the old standard). This efficiency is as good as more costly units and this translates to good energy savings. Indeed, this model is efficient to the point of frequently being Energy Star (the 230V model is Energy Star certified, and the 115V one is comparable in performance). The homeowners report a significantly low energy consumption in the cooling they get.
- Smart Connectivity (Alexa Enabled): A smart controller is built-in to Senville, which is one of the highlights of the product. This mini split is compatible with your WiFi and is compatible with the Senville app and Amazon Alexa. The AC can be turned on/off or temperatures set via voice commands (via an Alexa device) and the smartphone app can be used to do advanced scheduling or control the AC remotely anywhere. It is also possible to set up routines (such as auto-adjusting temperature at specific times) and make your home climate control more modern and convenient.
- All-in-One: LETO series is a 4-in-1 system: it cools, heats, dehumidifies, and has a fan mode. It also has a Turbo mode to cool/heat fast when you want to achieve a comfortable temperature in a short time. The heat pump can work efficiently to temperatures as low as 5F (-15C) and this takes care of most moderate climates (in extremely cold weather, the output will decrease, so take this into consideration when you live in a place where winter temperatures are below zero).
- Installation Kit: Senville offers a full installation kit: you will receive a 16-foot copper line set (pre-flared), a control wire, a drain hose, and a wall bracket of the indoor unit. The outdoor unit is already filled with refrigerant that is enough to cover the 16ft lines (and in fact enough to cover up to 25 ft, so you can shorten or slightly extend if necessary without any extra refrigerant). Note: The installation of this unit will be the same as any mini split installation, running the lines and then vacuuming the air out of the lines and then releasing refrigerant. Senville suggests that it should be professionally installed (and to keep the 5-year warranty, professional installation is normally necessary). It is very simple, provided you have HVAC experience or have contracted a technician to do the final hookup; many users do the mounting and preparation work themselves and have a professional do the final refrigerant commissioning.
- Quiet and Aesthetics: The indoor unit of the Senville LETO is sleek and modern with a neutral white color and a hidden LED display that displays the set temperature when it is running. It is very quiet (low 30s dB on low fan), so it can be used in bedrooms or study rooms. The users have been known to remark that they barely feel it running, except the good cooling.
- Warranty and Support: This model has a 5-year compressor warranty and 5 years on parts, which is outstanding coverage in this product category, provided by Senville. They offer free technical support and have a North American support line. It is important to note that in order to enjoy the full warranty, you are supposed to have the unit installed by a licensed HVAC technician (or at least have a technician sign off on the startup). Senville has a good customer service and a large user community which can be useful in case of any questions.
Why it made the list: The Senville LETO 12k 115V mini split is a good combination of price and features. It is one of the cheaper 110V mini splits of a well-known brand, but it does not compromise on efficiency and functionality.
The smart control that is Alexa-enabled is a major advantage to the tech-savvy homeowner who would like to incorporate cooling into his smart home system. It is not as simple as plug-and-play as MRCOOL or Klimaire DIY, but it can be a DIY project with the right tools (vacuum pump, gauge set) or a professional that can spend an hour or two. On the whole, this Senville model is a good choice of a person who is willing to have high efficiency and modern features at an affordable price. It is a tried and tested, solid system that will make you comfortable throughout the year, and the long warranty will back it.
#4 Pioneer Diamante Series 12,000 BTU (115V) Mini Split Heat Pump
Pioneer Diamante 12,000 BTU is the product of one of the most reliable brands of ductless systems. Pioneer has a rich history of producing quality and effective mini split ACs that are used by DIYers as well as professionals.
This one is a model of Pioneer Diamante (or Diamante Pro) series, having 115V, 1-ton capacity and a great efficiency rating. Pioneer units are characterized by their rugged construction, low noise level and good support system. Installation is not of the quick-connect type, but many experienced DIYers prefer Pioneer because of its reputation and then either do the final work themselves (with the necessary tools) or have a pro do the last part. And here is a closer look:
- Cooling/Heating Capacity: 12,000 BTU, which is good in rooms that are approximately 400-500 sq ft (up to 600 sq ft in certain climates). It is a complete 1-ton system that can give cooling during summer and heat during winter. Pioneer mini splits are usually mentioned as having precise temperature control and even cooling distribution, so after being correctly sized and installed, you can be sure of very consistent comfort in your space.
- Energy Efficiency: The Diamante series 115V models are about 19 SEER2 (about 20-21 SEER old rating). It is a high-efficiency unit which will be energy saving as compared to the older ACs or window units. The inverter technology used by Pioneer adjusts the compressor speed to the cooling load, which implies that it can slow down and use minimal power after the desired temperature is achieved. These units are found to be running most of the time at low power, keeping the temperature at low levels quietly and efficiently by many users.
- Build Quality and Performance: Pioneer has earned a reputation of good construction. The indoor unit is clean and minimalistic and the outdoor unit is powder-coated and weather and corrosion resistant. The system is performance-wise all that you expect: cool, heat, dry (dehumidify), and fan-only. It also comes with an auto mode and sleep mode to ease the temperature change during the night. The heating is competent in most winter situations (usually down to ~5F; in extreme cold Pioneer has a separate Hyper Heat line, but this Diamante is sufficient in moderate cold weather).
- Low Noise: Low noise is one of the strong points of Pioneer. The indoor air handler runs at a whisper on low fan speed (in the mid-20 dB range) and even at higher speeds it is like a quiet fan. Its outdoor compressor unit is also well designed to reduce noise and vibration; most people report that their neighbors do not even realize that the outdoor unit is on. This is why Pioneer is a favorite in installations where sound is an issue like in the neighborhoods with a lot of people or close to the bedrooms.
- Optional WiFi Smart Control: This model does not have WiFi included, but Pioneer does sell an optional WiFi module (sold separately) that you can plug into the unit to add app control. The module allows you to control the system remotely with the Pioneer app (or similar to SmartHVAC app) and even connect with voice assistants via third-party skills. In case smart features are important, consider the minor additional expense of the USB WiFi dongle. In its absence, you still get the bundled IR remote that is not too short of features and a programmable timer.
- Installation Kit: Pioneer comes with a standard installation kit: 16-foot copper line set (flared and pre-insulated), wiring harness and drain extension. You will have to do the installation the old fashioned way, mount the indoor air handler on the wall, set the outdoor condenser on a pad or wall bracket, run the line set through a 3 inch hole, connect and tighten the flare nuts, pull a vacuum on the lines and release the refrigerant charge on the outdoor unit. The outdoor unit is pre-charged with R410A refrigerant that is adequate to the line length included.Pioneer recommends professional installation; however, in case you choose to do it yourself, make sure you have the necessary equipment and know how to do it (otherwise, you might end up with leaks or performance issues).
- Warranty: Pioneer has a 5-year compressor and 5-year parts warranty provided that the unit is installed by a professional and registered. This is a good warranty compared to other products in the industry which shows that Pioneer is confident with their products. Technically, the warranty may be limited in case you install it yourself, but still, many users prefer to use Pioneer in DIY due to the reliability of the unit. It is notable that Pioneer (through their distributor HighSEER) has a good customer support and they tend to offer troubleshooting assistance and in the event that it is required, replacement parts are easily accessible.
Why buy Pioneer: The Pioneer Diamante 12k 115V is frequently selected by people who are more concerned about reliability and silent work. It is one of the most established brands with a history behind it, thousands of these units have been fitted in homes throughout America.
Provided you are comfortable with (or can afford to pay someone to) the usual installation process, Pioneer offers you a best-in-class mini split at a very competitive price point in terms of performance. It is particularly an excellent choice in bedrooms, home offices or living spaces where noise and temperature consistency is paramount. Pioneer units are not difficult to install, especially with the right tools, and are easy to install because instructions are clear and components are of good quality (the flares are well-made, etc.). To conclude, Pioneer offers a reliable performance, efficiency, and durability, so it is a safe choice when it comes to your DIY mini split.
#5 Cooper & Hunter Sophia Series 9,000 BTU (115V) Ductless Mini Split (Heat Pump)
The Cooper & Hunter Sophia 9,000 BTU mini split is an excellent choice in the event that energy efficiency is your number one priority or you simply have a smaller area to cool. Cooper & Hunter (C&H) is a reputable brand that manufactures high performance mini split systems with emphasis on cold-climate performance and efficiency.
It is a 9k BTU unit that is ideal in bedrooms, small living rooms or workshops (approximately 300-450 sq ft area coverage) and operates on standard 115V power. The difference is that it has an extremely high SEER rating of about 25 SEER, which makes it one of the most efficient 115V units in the market. Sophia Series is also characterized by the so-called whisper quiet operation and some smart features are also provided. Now, let us look at the features:
- Cooling/Heating Capacity: 9,000 BTU cooling (0.75 ton) and about the same in heating. As we are going over the 9k version in terms of efficiency, it is worth mentioning that C&H also has a 12,000 BTU 115V in the Sophia line (roughly 21.5 SEER). In case your room is bigger, you may choose the 12k, but in small and mid-sized rooms the 9k is usually enough and even more effective. The unit will comfortably keep bedrooms, home offices, or insulated garages of about 400 square feet.
- Ultra High Efficiency: The Cooper & Hunter 9k has a 25 SEER (this is the SEER rating; SEER2 would be a little less at about 23) which is the highest energy efficiency rating of the pack. It is designed to have a twin-rotary inverter compressor and sophisticated control logic to control output accurately. The consequence is that it will be able to operate at very low power consumption after the setpoint is achieved. A 14-16 SEER system will cost you a lot of money on energy bills in a season compared to this unit. It is a real energy sipper and it is also ideal in off-grid or solar powered applications because of the reduced amperage draw.
- Heating Performance: Sophia series is made to work in cold climates. It has a low ambient heating capacity to -13F (courtesy of an improved compressor and winterization options such as a base pan heater to avoid the formation of frost). This implies that you can use this heat pump to keep warm throughout the winter in most parts of the northern region without using backup heat. It can also cool when the outside temperature is low in case it is required (server rooms, etc.). Basically, it is a hyper-heat type unit with 115V power.
- Smart Port Adapter & WiFi: Cooper & Hunter comes with a so-called smart port adapter, i.e. a USB dongle that allows connecting to WiFi and controlling the device via the C&H app using a smartphone. You can switch the unit on/off, change settings, and check the temperature using your phone with it. Although it is not labeled as Alexa or Google Assistant compatible, you can control it remotely with the app and potentially connect through third-party solutions. A physical remote (backlit display) is also included in the system to cover all the standard operations.
- Silent Operation: The indoor unit is labeled with the term Whisper Technology, which makes it very silent. A lot of users put them in bedrooms or nurseries because of their quietness. The sound on the lowest fan setting can be likened to rustling leaves. It is also not obtrusive even at higher speeds. The outdoor unit is also reported to be quiet which is a good thing in case it is installed close to a patio or a window of a neighbor.
- Full Installation Kit: C&H offers a superior installation kit consisting of a 16-foot copper line set (pre-flared), signal/power cables, drain hose and wall sleeve. The parts are well made – the flares usually are supplied with a smear of refrigerant oil to make a good seal. This is however not a quick-connect system like the MRCOOL or Klimaire, and thus requires a vacuum pump and proper installation. Cooper & Hunter clearly mentions that the warranty needs to be installed professionally, so in case you do it yourself, you should know about that condition. The outdoor unit is already charged (with R410A) and after you connect your lines and evacuate them, you will add the refrigerant to the system.
- Warranty: Cooper & Hunter has one of the best warranties in the business: usually 7 years on compressor and 5 years on parts to the original owner. This is an indication of their trust in the durability of the product. They do need professional installation to keep this warranty and in many cases a receipt or documentation of the installation. Although you may install it yourself, the quality of the build of the system implies that you should be able to have a good many years of reliable operation provided you do it right. C&H products are ETL certified and AHRI listed, which implies that they are compliant with the North American safety and efficiency requirements.
What makes it special: The Cooper & Hunter Sophia 9k 115V mini split is perfect when you require the best efficiency or want to have a powerful heating in cold weather. A 115V unit with this high SEER and low-temperature heating is a little uncommon.
It is not as DIY-friendly as the dedicated kits, but it is one of the most popular among the informed DIYers because of its performance. Provided you are not averse to doing some installation work (or paying someone to do it), you will be rewarded with an AC/heat pump that is whisper-quiet, and provides comfort using a fraction of the energy that others do. It is an excellent selection when space is limited, or even when it is not limited, in which case you can choose the 12k BTU model (at the cost of a little efficiency). To conclude, C&H Sophia series is a high-performance series on standard voltage, which is why it is one of the best choices of efficiency-seeking users and cold-climate users who have a DIY mini split project.
#6 DELLA Motto Series 12,000 BTU (115V) WiFi Enabled Mini Split AC/Heat Pump
The DELLA Motto 12,000 BTU is a good choice among the budget-conscious shoppers who do not want to miss modern features. Della has established a reputation in selling cheap home HVAC appliances, and this Motto series mini split is a lot of value at its price.
It is a 115V, 1-ton ductless unit with in-built WiFi (Alexa compatible) and even has the newer R32 refrigerant to be more efficient and less harmful to the environment. Having a cooling capacity that suits approximately 500 550 sq ft and a good efficiency score, the unit of Della is an attractive option to DIYers with a limited budget or people who want to equip a garage, rental property, or she-shed with climate control without spending too much money. This is what it has to offer:
- Cooling/Heating Capacity: 12,000 BTU cooling and approx 12,000 BTU heating (heat pump). It can cool a medium sized room or two small rooms together. Most of the users install them in garages, home additions or apartments. It can be used all year round because the heating mode can remove the chill in winter, but as with most low-cost models, extreme cold performance can be poor (usually best above 1420 oF to heat effectively).
- Energy Efficiency: The Della Motto line promotes approximately 19-20 SEER2 (which is the same as ~21-22 SEER old rating). This is quite high considering it is a budget unit, which implies that it will not cost you a fortune in power bills. It may not be the highest SEER on the list, but it definitely complies with the newest efficiency standards (SEER2 standards) established by the DOE and that came into effect in 2023. The R32 refrigerant used in this unit also helps in the minor efficiency increase (R32 is superior in its thermodynamic properties to the older R410A).
- WiFi & Smart Home Integration: The Della 12k is also WiFi-enabled right out of the box, even though it is cheaper. It is compatible with the Della app to control with a smartphone and is also promoted to be compatible with Amazon Alexa. It implies that you may switch the unit on/off or adjust temperatures using voice command or remotely by using your phone. These features are particularly convenient when you install this in a rental or a workshop, you can pre-cool the area or make sure it is turned off when you are not around, all through your phone.
- Pre-Charged R32: The outdoor unit comes pre-charged with environmentally-friendly R32 refrigerant to fit the line set that is included (typically ~16.4 ft). Pre-charged in this case implies that the unit is filled with the refrigerant, however, you should remember that you will still need to vacuum the air out of the lines when installing it; it is not a quick-connect system. R32 refrigerant is more efficient and less harmful to the environment in terms of global warming potential than R410A, which is in line with new environmental regulations. The fact that this unit is R32 is an added advantage in terms of future proofing and performance.
- Installation Kit: Della includes what you need: an insulated copper line set (~16 ft), indoor mounting bracket, remote control, and communication/power cables. The installation is the same as any other non-DIY mini split, you mount the indoor unit, run the lines to the outdoor unit, connect them (flare connections), evacuate the lines, and release the refrigerant. When Della is selling pre-charged heat pump, do not forget that it does not imply plug-and-play, it simply means that the refrigerant is already in the outdoor unit. You may require a technician to do the final vacuum and check, especially when you are not familiar with HVAC. This is a minor additional action, which can make your system work in the best way possible and the warranty stays.
- Performance & Noise: The Della mini splits are reported to perform well by the users considering the price. They cool down fast and the inverter technology does not allow extreme temperature changes. The indoor unit has low noise levels (similar to other brands, usually 30 dB on low fan). It is not as quiet, or as well built, as a Pioneer or C&H, but in everyday use it is not loud enough to be used in a living room or bedroom. The outdoor unit is medium in size and sound, that of a 1-ton system.
- Warranty: Della normally provides about 1 year parts warranty and a longer (perhaps 5 years) warranty on the compressor. The warranty is not as extensive and long as the premium brands and they will require that the right installation procedures have been adhered to. At the price, some users will compare the warranty to the savings, even with a short warranty, the low price may be worth the gamble to many DIYers. It is advisable to test the unit well when it is installed (during the returns policy period) to make sure that everything works out of the box.
In short: DELLA Motto 12k 115V mini split is a feature-rich low-cost model. It is especially appealing when you are interested in WiFi control and good efficiency without paying a premium.
It is an excellent choice among the DIYers who feel comfortable with the standard installation procedure or are ready to pay an hour or two to a professional to help. Although its parts may not be as industrial grade as more expensive brands (some reviews note that the remote control can be a little quirky or that connections need tightening on arrival), most people are satisfied that it is a solid performer that makes their space much more comfortable. When you require a cheap mini split system to serve a single room and you wish to take advantage of smart technology, Della offers a lot of bang per buck.
#7 COSTWAY Blast Series 12,000 BTU (115V) Ductless AC & Heater
Our last entry is the super cheap COSTWAY 12,000 BTU Mini Split of the Blast Series. It can be one of the cheapest 110V mini splits on the market, so it is a good choice to consider when you want to do it yourself and you do not need any extra features.
Although the price is low, the COSTWAY unit offers a complete 1 ton of cooling/heating and a decent efficiency rating. It is an efficient, easy to install ductless system that cools and heats areas of up to approximately 750 sq ft (perfect in a large garage, open studio or small apartment). Although it lacks smart WiFi, it still has some practical features such as self-cleaning.
This is a summary:
- Cooling/Heating Capacity: 12,000 BTU in cooling and about 12,300 BTU in heating. This ability can accommodate the primary space of a small house or a large master bedroom. COSTWAY even claims to cover up to 750 sq ft, which would be at the upper limit of its ability (it can do that in a mild climate or a well-insulated space; in hot climates, aim at around 500-600 sq ft).
- Energy Efficiency: The Blast Series unit is rated at about 20 SEER2 (and the 230V version is about 17 SEER2). 20 SEER2 on the 115V model is quite competitive, it means that the unit when properly installed can run efficiently and not consume electricity like a pig. This is remarkable considering its price range and it is not always true that by choosing a less expensive unit, the running cost will be much more expensive. It is very reasonable in terms of price and performance.
- 7 Modes & 4 Fan Speeds: This mini split is versatile in its working. It possesses all the common modes: cooling, heating, dehumidifying (dry mode), fan-only and auto. It also usually has special sub-modes such as sleep mode (which sets the temperature to a comfortable level at night), ECO mode (runs at a low energy level), and a Turbo mode (fast cooling/heating when you first switch it on). The fan is adjustable to 4 speeds to adjust airflow. These settings will enable you to set the unit to your comfort requirements and conserve energy when it is not required to run at full power.
- Self-Cleaning Function: The COSTWAY has a remarkable feature, the self-clean mode. The indoor unit will automatically clean and dry its evaporator coils when activated by running a special cycle that heats them to ~135 o F, drying condensation and killing bacteria or mold spores. This assists in ensuring efficiency and air quality in the long run and minimizes maintenance requirements. It is a wonderful option to apply once in several weeks or at the end of a season to keep the inside of the unit clean and free of odors.
- Auto-Swing & Air Distribution: The Blast Series is designed with a 4D air flow, which means that the louvers will automatically swing up and down and side to side to distribute air throughout the room (most basic models only auto-swing in one direction). This will improve the air mixing and will remove hot or cold areas in the room. The louvers can also be adjusted to your desired angle by using the remote but the auto mode is convenient to cover a broad area.
- Installation Essentials: Just like the others, you receive an installation kit: usually a 10-16 ft copper line set, flare connection adapters, control/power wiring, and a drain hose. As a budget unit, the instructions may not be as comprehensive as the premium brands, but simple installation is the same procedure. The outdoor unit is charged with the refrigerant in advance with the line length given. If you are doing it yourself, make sure a professional vacuums the lines and tests them for leaks, this will ensure maximum performance and life of the unit. Other DIYers claim to have installed COSTWAY units successfully without any professional help, even though the manual is minimal.
- Cost & Value: The key attraction here is the low cost. In many cases, this COSTWAY 12k unit may be available at a couple of hundred dollars cheaper than comparable-spec rivals. That is why it is a good option in terms of experiments, temporary use, or limited budget. It is a full-fledged inverter heat pump, so, despite the low price, you should remember that once installed, it will work in the same way as others in terms of cooling/heating your space. It is difficult to find a better value of money, which is confirmed by its popularity (it is frequently among Amazon best sellers in mini splits).
- Warranty: Being a low-end brand, the warranty of COSTWAY is usually shorter, about 1 year comprehensive. This is one of the things to remember. But when the unit performs well in the first year (which is inclusive of any manufacturing defects), it should last many years provided it is maintained well. The less complex electronics and design is actually a plus in long life (less to break). Whenever you install a unit, always test it to ensure that it is functioning as it should be during the warranty period.
Best application: The COSTWAY 12,000 BTU 115V mini split is ideal when you require cheap cooling and heating and do not want any bells and whistles. It may be a workshop, a rental house where you do not want to spend too much, or even a starter do-it-yourself project to get acquainted with mini splits. It performs well where it matters most, that is, cooling a hot room and keeping the room warm during cold months.
It should not put you off in case you simply need a decent air conditioner/heat pump. Once installed, this budget unit has been pleasantly surprising users in the way it performs, and it is not uncommon to hear users compare it to more costly units in terms of maintaining the room comfortable. All you need to do is to be ready to either do some homework on the installation or pay a professional to do a quick job and that little effort will be worth it to get you a fully functional AC at a fraction of the normal cost. In short, the mini split of COSTWAY is the most economical and comfortable, which is a good choice to consider in a DIY mini split project.
