The proper smart thermostat can change the way you control the climate in your home and even save money on energy bills, so it is worth finding the one that fits your Apple HomeKit system.
HomeKit-enabled thermostats enable you to manage the temperature of your home by voice command with Siri, automation schedules, and the Apple Home app on your iPhone, iPad, or Mac.
The best HomeKit thermostat is one that is well connected, easy to operate, energy efficient, and one that fits well with your current HVAC system.
This guide will look at the best smart thermostats that are HomeKit-compatible and what makes them special, their installation needs, and compatibility details.
| Thermostat | Key Features | Compatibility |
|---|---|---|
| ecobee Smart Thermostat Premium | SmartSensor included, air quality monitor, saves up to 26% on energy | HomeKit, Alexa, Google Assistant |
| ecobee Smart Thermostat Enhanced | Energy Star certified, automatic adjustments, humidity control | HomeKit, Alexa, Google Assistant |
| meross Smart Thermostat | Matter support, 7x24h scheduling, C-wire required | HomeKit, Matter, Alexa, Google Assistant |
| Honeywell Home T9 | Smart Room Sensor included, 200ft sensor range | HomeKit, Alexa, Google Assistant |
| Emerson Sensi Touch | Touchscreen display, smart maintenance alerts, energy savings | HomeKit, Alexa, Google Assistant |
#1 ecobee Smart Thermostat Premium with Air Quality Monitoring
The ecobee Smart Thermostat Premium is one of the most complete climate control systems that does not just regulate temperature.
This high-end product is ENERGY STAR qualified and can save the homeowner up to 26 percent a year on heating and cooling bills as opposed to keeping the house at a consistent temperature.
The real difference in this model is the SmartSensor that comes with it and allows detecting temperature not only in the place where the thermostat is.
Such sensors can be installed in rooms of your concern and this can help in getting rid of hot or cold spots within your house. The system is smart and it automatically adapts according to the occupancy patterns, so that energy is not wasted heating or cooling unoccupied spaces.
The in-built air quality monitor is an outstanding feature that is not common in other thermostats in the market.
It proactively notifies you when the quality of the air in your house becomes bad and gives you tips on how to correct the situation. It even reminds you when it is time to change your furnace filter so that systems are kept efficient and air healthier.
Design-wise, the ecobee Premium has a high-quality material and a big, colorful screen with a movie-like interface.
The modern, classic design fits well with contemporary home design and the latest occupancy sensing technology makes it work best when you are at home or away.
It can be controlled through the Apple Home app or voice commands using Siri due to HomeKit integration.
The thermostat can be part of automated scenes and routines, including automatically changing the temperature when you leave home or making a comfortable environment before you get back.
#2 ecobee Smart Thermostat Enhanced for Reliable Climate Control
The ecobee Smart Thermostat Enhanced is a great compromise between the necessary functionality and stability of the HomeKit users who want to control the climate efficiently.
Similar to its Premium version, this ENERGY STAR certified model is capable of saving up to 26 percent of heating and cooling expenses per year when compared to a fixed temperature setting.
The Enhanced model has one of the outstanding features which is its proactive temperature management.
The system also preheats or precools your home before you get there so that you are guaranteed to be in the perfect comfort as soon as you enter. This predictive technology is in conjunction with occupancy detection that automatically changes settings depending on whether you are home, away, or sleeping.
The thermostat has advanced humidity compensation, which automatically adjusts temperature settings to reflect the amount of humidity.
This will keep your home at the temperature you have set it at at all times no matter the moisture conditions that would otherwise make it feel warmer or cooler than the actual reading.
The installation is extremely easy and most users take approximately 45 minutes or less to install.
The thermostat is supplied with all the components required to install it in a typical way, and the companion app offers a clear step-by-step instruction during the process.
With HomeKit, it is easy to control it wherever you are with the Apple Home app on your iPhone, iPad, Mac, or Apple Watch.
You may also automate the thermostat or command it with Siri voice commands. In the case of mixed ecosystems, the Enhanced model is also compatible with Amazon Alexa and Google Assistant to have flexible control options.
#3 meross Smart Thermostat with Matter Support
The meross Smart Thermostat is extremely compatible with the latest smart home ecosystems, such as Apple HomeKit and Matter.
This flexibility is what makes it a great option to users who would like to have future-proof integration irrespective of the platforms they may incorporate in the next few years.
The heating and cooling system compatibility is also impressive, as it supports about 95 percent of the conventional systems, such as traditional heating and cooling systems, heating-only or cooling-only systems, and heat pumps.
It is necessary to mention, though, that this model does not support electric baseboard heaters, and it needs a C-wire to work correctly. In case your system does not have a C-wire, meross provides a separate adapter.
The scheduling features are very flexible and allow 7-day 24-hour programming.
This will enable you to program your own temperature schedules that suit your lifestyle to the tee. Notably, these schedules will still work even when Wi-Fi is down, so the climate will be controlled at the same level all the time.
To Apple HomeKit users, the meross thermostat can easily be added to the Apple Home app, and control the temperature through iPhone, iPad, Mac, or Apple Watch.
You may add the thermostat to HomeKit scenes and automations or control it with your voice using Siri. The device is compatible with 2.4GHz Wi-Fi networks, which is normal with most smart home devices.
The energy saving characteristics assist in cutting utility bills and still remain comfortable.
You can also save a lot of energy in the long run by simply ensuring that your HVAC system is not heating or cooling when it is not necessary by controlling the time it runs according to your schedule and preferences.
#4 Honeywell Home T9 with Smart Room Sensor Technology
The Honeywell Home T9 presents an innovative solution to the entire home comfort using the Smart Room Sensor technology.
This HomeKit-enabled thermostat includes one Smart Room Sensor (additional sensors can be purchased separately) that enables you to control the temperature in particular parts of your house and not only in the place where the thermostat is mounted.
These are battery-operated sensors that use the proprietary technology of Honeywell to provide solid signals as far as 200 feet away to the main thermostat unit, and possibly even more in the case of your home construction.
This wide coverage allows you to expand your temperature monitoring to other rooms that are far away such as bedrooms, basements, or any other room that has always had temperature fluctuations.
The comfort that is room-specific is especially useful when it comes to enhancing the quality of sleep.
You may set the system to focus on bedroom temperature at night, so that you can have the best sleep. Alternatively, the Smart Room Sensors can automatically sense the occupied rooms and concentrate heating or cooling activities there, maximizing comfort and energy consumption.
The design of the T9 is all about energy efficiency, and ENERGY STAR certification proves that it performs.
Auto Home/Away Scheduling automatically changes the temperature settings to suit your habits so that you do not waste energy when you are not at home. Several utility companies are providing rebates on the installation of smart thermostats such as the T9, which may cover part of the cost of purchase.
It can be controlled via the Apple Home app or Siri voice commands with the help of the HomeKit integration, and the Honeywell Home app offers more features and settings.
The touchscreen display of the system provides an easy way to make direct adjustments when you are at home, which is in addition to the powerful remote control features.
#5 EMERSON Sensi Touch For Reliable HomeKit Integration
EMERSON Sensi Touch is a high-tech smart device with the stability of more than 100 years of HVAC experience.
The thermostat has been rated as an editor choice in the best overall smart thermostat by the reviewed.com of USA today, which indicates its outstanding performance and worth.
The installation process is very simple and most users take less than 30 minutes to install it.
The thermostat features such considerations as an in-built level, glowing easy-click terminals, and step-by-step instructions on the app that make installation easy. The normal size of the thermostat implies that you will not have to repaint your wall or patch it after the installation.
The Sensi Touch has smart maintenance features that make it stand out among most of its competitors.
The system will actively track the performance and efficiency of your HVAC equipment and provide notifications of the important usage and maintenance reminders. These active warnings on filter changes and possible system problems assist in extending equipment life and optimum efficiency.
The savings on energy are considerable, and Sensi customers have stated that they have saved about 23 percent of HVAC energy consumption due to such features as flexible scheduling, remote access, and geofencing.
The Energy Star rating of the thermostat proves its efficiency status and can be eligible to rebates offered by the local utility providers.
The HomeKit integration enables the easy control via Apple Home app and voice commands via Siri.
In houses that have more than one smart ecosystem, the Sensi Touch is compatible with Amazon Alexa, Google Assistant, and Samsung SmartThings. The touchscreen display is color and offers a direct control interface that is intuitive, and offers clear visual feedback of the current settings and system status.
HomeKit Thermostat Buying Guide
HVAC System Compatibility
Make sure that the thermostat you buy is compatible with your heating and cooling system before buying any HomeKit thermostat.
The vast majority of smart thermostats are compatible with standard forced air systems (gas, electric, or oil) although compatibility with heat pumps, multi-stage systems, radiant heating, or custom systems differs by model. Most manufacturers provide web-based compatibility checkers to check prior to purchase.
Requirements of C-wire are especially worth checking.
Most smart thermostats need a C-wire (common wire) to have constant power. You might require an adapter kit or professional installation, in case your system does not have this wire. Other models provide C-wire alternatives, which are not necessarily the best solution to all systems.
Installation Considerations
The majority of HomeKit thermostats are DIY-installed, and they usually require 30-60 minutes.
But one should be comfortable with simple electrical work. Professional installation is an option to consider when you are not sure about wiring or when you have a complicated HVAC system. Most manufacturers offer support and step-by-step instructions.
The location of thermostats influences the performance and efficiency.
Avoid places that have direct sunlight, drafts or heat source that may give inaccurate readings. Other models make up the shortcoming of placement with remote temperature sensors that can be placed in the most frequented parts of your house.
Smart Features and Integration
Although all the thermostats in this guide are compatible with HomeKit, the extra platform compatibility (Amazon Alexa, Google Assistant, SmartThings) will give you flexibility in case you use more than one ecosystem.
Newer models are compatible with Matter, a technology that should enhance interoperability between smart home systems.
High-tech comforts are also quite different among models.
Think about which features are most important to you: room sensors to balance temperature, humidity control, air quality, or learning functions that change with your preferences as time goes on. Other models provide geofencing where the temperatures are automatically changed depending on the location of your smart phone.
Energy Efficiency and Cost Savings
Smart thermostats tend to save energy by providing a more accurate control of temperature and scheduling.
Seek ENERGY STAR labeling as a sign of demonstrated performance. Most utility companies provide rebates on smart thermostat installation, occasionally making the effective cost of purchase quite low.
Think of the long-term value other than the purchase price.
More advanced models that have more energy-saving features may be more expensive to purchase but save more in the long run. Such features as usage reports, energy-saving suggestions, and reminders about maintenance can be used to make the best out of your HVAC system and prolong its life.
User Experience and Design
The interface design has a great influence on the daily satisfaction.
There are users who want to have a minimalistic interface and there are those who want to have detailed information displays. Look at the physical interface on the thermostat itself, and the companion app experience. The majority of HomeKit thermostats can be controlled using their own app and the Apple Home app.
With different levels of technical comfort in the household, seek controls that are easy to operate by all members of the family.
Physical controls are still significant to the guests or in case of network connectivity problems. The visual design of the thermostat is also a factor to consider since it will be a major feature in your house.
