When HomeKit first launched there were actually very few smart thermostats that worked with HomeKit but since then a large number of manufacturers have worked with Apple and now there are dozens of smart thermostats that work with HomeKit. The issue now is not finding a smart thermostat that works with HomeKit but finding the best HomeKit thermostat for you.
Below we rank the Best HomeKit thermostats, provide you with the right HomeKit thermostat for different types of heating and cooling systems. At the end of the post we will also include the full list of smart thermostats that are compatible with HomeKit
Best HomeKit Thermostats Ranked
In my mind the Ecobee 4 Smart thermostat is the undisputed leader for the Best HomeKit Thermostats because it’s reliable, has an abundant amount of smart features and is easy to install. The Ecobee 4 smart thermostat is one of the best smart thermostats on the market regardless of the fact that it works with HomeKit.
One of the added benefits to the Ecobee4 Smart Thermostat is that it has Alexa built in which allows you to control your smart thermostat with voice even if you aren’t near your phone to use HomeKit or Siri on your phone. With Alexa built into the thermostat it will also allow you to play music, ask the weather or set a time with Alexa and the built in speaker hidden behind the smart thermostat.
The Ecobee 4 thermostat claims that it can save up to 23% in heating or cooling costs every year, and has built in smart sensors that can auto schedule your heating and cooling to create the perfect balance of comfort and energy efficiency.
The Ecobee 4 smart thermostat ships with 1 remote temperature and motion sensor and you can add more remote temperature/motion sensors if you want in the future. This remote sensing capability is what really sets the Ecobee 4 apart from other smart thermostats that work with HomeKit because houses don’t heat and cool evenly and the remote sensor helps solve that problem.
With the remote sensor you can place it in your master bedroom and it will detect the temperature and allow you to set the Ecobee to hold the an exact temperature in your master bedroom, so even if it is hotter or cooler in the room where your thermostat is located you will be able to precisely dial in the temperature you want in your master bedroom before you go to sleep.
I find that a having the remote sensor in our bedroom allowed me to sleep more comfortably and ensure that I wasn’t too hot or too cold. I immediately slept better when using the temperature sensors in our bedroom.
The smart thermostat features a responsive touch screen display and black finish that blends into the touchscreen. It connects to your wifi network for control and once connected can be controlled either in your home from your phone or remotely at work or even in another state. The Ecobee 4 is compatible with a wide variety of heating and cooling systems. Most people can install the Ecobee 4 themselves and it takes about 15-40 minutes to install.
If you are considering a smart thermostat and want a thermostat that works with HomeKIt in my mind Ecobee 4 is the best HomeKit thermostat money can buy.
The Ecobee 3 thermostat essentially has all of the same features as the Ecobee 4 smart thermostat but it does not have Alexa built in. In every way it pretty much looks and works the exact same as the Ecobee 4 but typically at a lower price point. If you are looking to save a little bit of money and don’t need or want built in Alexa in your smart thermostat the Ecobee is top thermostat that works with HomeKit.
Well I know this sounds redundant, and I promise I don’t work for Ecobee but the reason that Ecobee wins the top three spots is because their app and software for all 3 of their thermostats feels years ahead of most of the other competitors. The different versions of the Ecobee thermostat mostly offer all the same features the only difference is extra accessories, and price points which is why Ecobee won the top three rankings for best HomeKit thermostats.
Because Ecobee has a bigger user base than most of the other smart thermostats listed it allows them to invest in software upgrades and features that might be a stretch for other companies research and development teams. Ecobee has a very open approach to compatibility and while they meet the stringent security standards required to work with HomeKit, they have designed their platform so that it can integrate with other services and devices to create comprehensive smart home control. This makes any of the three HomeKit compatible Ecobee Thermostats a good choice for any home.
The Ecobee 3 lite differs from the other Ecobee smart thermostats in that it does not have Alexa built in, it does not ship with a remote temperature/motion sensor and it does not have a built in occupancy sensor. It also typically has a lower price point than the other two models.
It is still compatible with the remote temperature/motion/occupancy sensors just like the Ecobee 4 and Ecobee 3 and you could use one of the remote sensors as an occupancy sensor if you desired the feature in the future.
The Emerson Sensi touch is the latest version in a lineup of Smart Thermostats from Emerson. They have built a reputation for reliability over the years and have tuned into to what customers want which makes them among the best HomeKit thermostats.
The smart thermostat offers touch screen control, smart phone control and can be integrated with Homekit, Alexa or Google Home. What is truly impressive the Emerson Thermostat is it’s HD touch screen, it offers one of the clearest and brightest color displays on the market and has the look and quality of a small tablet mounted on the wall rather than that of a thermostat.
With the remote smartphone control you can change HVAC heating and cooling modes, adjust the temperature and access the full suite of features right from your phone. One of my favorite features on this smart HomeKit thermostat is that it will automatically send you smart alerts if it detects extreme temperatures or extreme humidity levels in your home. The smart alerts can be indicators of a larger problem with your HVAC system and can help you advert a disasters. The Emmerson Sensi has the best screen of the HomeKit Thermostats we reviewed and also had a backlight that can provide ambient light at night.
Honeywell has been in the thermostat and HVAC space for decades, they are one of the most well know and longest tenure HVAC companies on the planet that produces everything from smart thermostats to commercial building automation components.
The Honeywell Lyric works with HomeKit and provides an easy interface for 7 day scheduling. The Honeywell Lyric also integrates with Geofencing on your phone to help save energy when you are away.
One unique feature of the Honeywell thermostat that I like is that it will automatically switch from heating to cooling to maintain the desired temperature. Not all smart thermostats offer this feature but it works flawlessly on the Honeywell smart thermostats.
They Honeywell smart thermostat does require a common wire for installation but otherwise is relatively easy to install. People report slightly less satisfaction with Honeywell than those who choose the Ecobee or Sensi thermostats and it’s most likely because it’s seems and feels a little bit more technical than the simple too understand interfaces of the Ecobee and Sensi controls. Overall if you like Honeywell products and want to upgrade your old Honeywell thermostat to a new smart thermostat this might be the best HomeKit thermostat for you.
Best HomeKit Smart Thermostat For Electric Baseboard Heat
We included this smart thermostat that works with HomeKit in it’s own category because it is very specialized but in it’s specialty it is the best Homekit smart thermostat. The Mysa smart thermostat works with high voltage electric heating systems which are commonly used for baseboard heating and in floor heating systems.
The Mysa smart thermostat is the best HomeKit thermostat for this application and has proven itself to be reliable and a game changer for people who have electric or baseboard electric high voltage heating systems. The Mysa smart thermostat works on wifi, has a great app interface and can also be controlled by Alexa voice commands if you want hybrid control with both HomeKit and Alexa.
High voltage heating is commonly found in condo building, high rises, custom homes and buildings with large exterior glass walls or windows.
Mysa does not work with Low Voltage 24V systems only 120/240V heating systems. They Mysa thermostat is designed for heating systems only and will not work with cooing systems.
Best HomeKit Thermostats Summary
If you are in the market for a HomeKit thermostat any of the thermostats in the Ecobee lineup provide an exceptional value, high quality product that will provide you with years of great service on your HVAC system as a HomeKit Thermostat. If I were choosing a smart thermostat and wanted the Best Homekit Thermostat I would choose the Ecobee 4 because of it’s additional features and the motion/occupancy/temperature sensor that ships with the thermostat that can help provide precise comfort control in other rooms like bedrooms.
If for whatever reason you would like an alternative to the Ecobee thermostat the Sensi thermostat is a great runner up and will also provide reliable heating and cooling for your home with an abundance of features and a beautiful HD display.
If you have a High Voltage heating system the Mysa thermostat is the best option for a HomeKit controlled smart thermostat and serves its niche very well. We just wish Mysa also made a standard low voltage version of their thermostat because their design and control interface is incredibly elegant.
Adding a Homekit Thermostat to your home adds both comfort and control to your home, and after the first time you use HomeKit and Siri to control your home with voice you will wonder why you didn’t get a HomeKit compatible smart thermostat sooner.
We also have a list of other smart thermostats that are compatible with HomeKit but that did not make our list of the 5 best thermostats that work with Apple HomeKit. So please see the list below but use them at your own risk as we have not tested all of the different smart thermostats below.
List of HomeKit Compatible Thermostats
ATAG One Zone Smart Thermostat