Aux Mini Split Heat Pump/AC Reviews and Prices 2022

Aux mini splits are gaining market share due to their quality. They offer pretty good efficiency too – they are certified Energy Star mini splits – but there are more efficient systems available from Fujitsu, Gree, Carrier/Toshiba and other brands. 

But if you want good quality at an affordable price, consider Aux. 

Who Makes Aux Mini Split Units?

The AUX mini split units are manufactured by AUX Group, which is based in China and started in 1986. The AUX Group has diversified into six different types of products or services from financial services to home appliances. 

The appliance part of the AUX group not only makes home appliances, such as mini split systems, but it also supplies components for many of the popular, high-quality home appliance brands, such as LG, Whirlpool, and Mitsubishi.

In 2015, the company opened US operations in Los Angeles, the headquarters for Aux USA. 

Features of Aux Mini Split Units

Aux mini split units are well-equipped with a number of popular features that help the system stand out among your mini split options. Read on to find out all about the features that are available on AUX mini splits. 

Ductless heating and AC: There’s no need for ductwork. This allows you to heat and/or cool a single zone in an addition to their home or an area in a home that might not get enough heat without having ductwork. 

WiFi: Most of the AUX mini split units are equipped with WiFi capabilities. With WiFi, you can control their mini split unit from anywhere by using the AUX app.

Inverter efficiency and quiet operation: Inverter compressors aren’t on/off units. They run faster or slower, adjusting in tiny increments, to deliver nicely balanced indoor temperature and humidity control. The available AUX mini splits all have a SEER (seasonal energy efficiency ratio) rating of 17 and a HSPF (heating seasonal performance factor) rating of 9. Any heat pump that has a HSPF rating of 8.5 or higher earns an Energy Star label.

110V simplicity – No 220V needed: The electrical requirements to install an AUX mini split system is only 110 volts and has a 110v power cord for easy connecting to a home’s electricity. This makes the installation process much easier, since there will often not require much, if any, electrical work. 110 volts is standard for most outlets and switches. If you have an open circuit on your electrical panel, you’re in good shape!

Easy maintenance: Every AUX mini split is very easy to maintain due to the washable, antibacterial filters and easy access, removable panel.

Temperature sensor in the remote control: AUX mini splits include “follow me” technology that makes sure the air is comfortable where the remote is – so, keep the remote with you to ensure the air around you is the temperature you want it to be. 

Quiet indoor units: AUX mini split units are also very quiet due to their cross flow technology. The level of noise that the air handler (indoor unit) produces is only 29 decibels on the lowest setting and 42 decibels on the highest setting.

Ready to install: Every AUX mini split comes with a pre-charged line set with R410 refrigerant. In addition to the line set, AUX mini splits include an installation kit with almost everything you will need to properly install your mini split unit.

So-so warranty: AUX mini split have a one year limited warranty for the parts and a five year limited warranty on the compressor.

Important installation tip: The warranty is only valid if a licensed HVAC technician completes the installation process.

Aux Mini Split Systems – Product Overview

The AUX group has three different products available for homeowners. Each one has a 17 SEER rating and 9.0 HSPF rating. That means AUX mini splits are reasonably energy efficient and earn an Energy Star sticker on their models. However, they are not among the most efficient mini split systems available.

The sizes of the products are 12,000 BTUs, 24,000 BTUs, and 36,000 BTUs. The table below shows each model, the capacity, efficiency, and HSPF rating for the AUX mini split units.

Products Introduction


Prices of Aux Mini Split Units by Capacity

The price of each of the single zone mini split units depends on the cooling/heating capacity. The higher the capacity, the more expensive the mini split unit. The smallest AUX mini split unit is 12,000 BTUs or 1 ton. You can expect to pay as little as $820 for the mini split unit only and up to $1,800 – sometimes more with complex installation – for both the unit and the installation costs. 

The largest AUX mini split available pushes out 36,000 BTUs or 3 tons, and the unit price is between $2,100 and $2,400. The total price for both the unit and in the installation can be as much as $3,200. See the table below for all detailed prices of all of the AUX mini split units by capacity.

Price By Capacity

Capacity By BtuCapacity By TonUnit PriceInstalled Cost
12000 Btu1 Ton$820 - $950$1,650 - $1,800
24000 Btu2 Ton$1,200 - $1,580$1,750 - $2,300
36000 Btu3 Ton$2,100 - $2,400$2,850 - $3,200

How to Install an Aux Mini Split Unit

AUX mini split units come with everything needed to install and then operate the unit, including an installation kit.

But remember, pro installation is required, or the warranty is voided. Plus, if the refrigerant charge isn’t precise, the unit won’t be as efficient as possible and could fail mechanically. Not to scare anyone, but just to make you aware. Aux mini split systems are not designed for DIY like some MrCool and Klimaire mini split systems.

Each installation kit has the following necessary items to help with the installation process:

  • 25 feet of pipe insulation
  • 25 feet of flared copper tubing
  • 25 feet of electrical signal wire (necessary to connect the indoor unit to the outdoor unit.
  • 8 Feet of electrical wire (used to connect the outdoor unit to the home’s power)
  • Indoor drainpipe
  • Plastic pipe wrap
  • Mounting plate or wall bracket for the indoor unit
  • Neoprene putty to seal any holes

There are many steps needed to properly install an AUX mini split. The following are installation directions on how to install an AUX mini split:

Mounting the Indoor Unit – The Air Handler 

  1. The first step when installing any mini split unit is to determine the size of the system that your living space requires. Mini splits are designed to heat and cool a single room or living space. AUX mini splits are available in the following capacities: 12,000 BTUs, 24,000 BTUs, and 36,000 BTUs.
  2. Install the air handler or the indoor unit. Choose a location on an interior wall that has direct access to the exterior of the home. The location where you intend to install the air handler is located should be on a wall that is large enough and is free from obstructions. It is also important to not place the air handler in direct sunlight.
  3. Locate the studs to connect the mounting bracket and make sure that there are not any wires, pipes or any obstructions in the wall. Use a level when installing the bracket.
  4. Drill the pilot holes a little smaller than the size of the screws you will be using to install the mounting bracket. Drill a 2” or 3” hole through the entire wall for the drain lines, refrigerant lines, and power lines. This is usually at the base of the mounting bracket. Follow the user manual for exact details.
  5. Connect the control wiring to the indoor unit via the back access plate. Next, run the refrigerant pipe, control wire, and drainage tubes out the hole that you made. Use electrical tape to secure all three together.
  6. Lift and place the indoor unit on the mounting bracket. Use the manufacturer’s directions on how to properly connect the air handler to the mounting bracket.

Installing the Outdoor Unit – the Condenser

This section is for information only, since Aux requires pro installation.

  1. You have options for where to set the outdoor unit. You can place it on the ground, your roof, or on a mounting bracket. If you decide to place the outdoor unit on the ground, a secure pad must be installed. This can be purchased or you can make one by using concrete.
  2. Once the outdoor unit is on the pad, bracket, or roof, connect the pipes and tubing from the indoor unit to the outdoor unit. Be very careful with pre-charged lines and DO NOT cut them. Follow the manufacturer’s instructions carefully to ensure that all the connections are correct.
  3. Attach all the wires and tubing to the exterior wall. Using a PVC cover is often used to give the unit and space a cleaner look.
  4. Connect the pipe joint to the line set on the back of the outdoor unit. Finally, connect the wiring that runs from the indoor unit to the outdoor unit.

Have a Professional Inspect the Mini Split System

  1. Call an HVAC technician to check all the connections to double check that everything is done correctly.
  2. Hire an electrician to connect your home’s power to the outdoor unit. AUX mini split units use a 110-volt line, so a new line might not need to be run.


Are Aux Mini Split Pre-Charged? 

YES….AUX mini split units are pre-charged with eco-friendly R410 refrigerant. However, it is a very good idea to have a licensed HVAC technician install your mini split unit to ensure that everything is done correctly and the unit is functioning how it is supposed to.

Where can you buy Aux mini split systems?

They are available at the Home Depot, Lowes, other home improvement stores, online sellers and direct from Aux

Written by

Rene has worked 10 years in the HVAC field and now is the Senior Comfort Specialist for PICKHVAC. He holds an HVAC associate degree from Lone Star College and EPA & R-410A Certifications.
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