Our ecobee4 Alexa-enabled smart thermostat rating:
The ecobee4 at a glance
Voice control, integration with a variety of home automation systems, and a sleek, easy-to-use interface – the ecobee4 has it all. It’s easy to set up and schedule, it offers fine-tuned control over your HVAC’s features, and the remote temperature sensors are well-loved by users with large homes and rooms they want to prioritize over others.
For years, ecobee distinguished its product line with useful room sensors until Nest added them in early 2018, but Ecobee still makes a better sensor. Ecobee’s sensors detect occupancy and and they aren’t beholden to set-in-stone time period. Also, you get one for “free” in the box. Nest makes you buy the sensor separately.
The ecobee4 is still unique in offering on-unit Alexa integration (you can talk right to the thing), but the novelty wears off once your routine is set. If your thermostat is in a central location you might find yourself using it for timers and other useful Alexa skills (of which there are thousands to pick from), but if it’s in an inconvenient location you probably won’t be walking over just to talk to it. It’s also worth noting that the Alexa integration is watered-down, missing features like messaging and streaming Spotify (the speaker quality is very tinny, hardly suitable for music anyway).
If there’s anything we don’t like, it’s the ongoing server stability issues that both Ecobee and Nest struggle with. When the servers go down, so does your ability to interface with the thermostat via your smartphone – and isn’t that the whole point? Neither manufacturer lets you connect through your local network, so just being home and on the same WiFi network isn’t even enough – your requests must go through their servers.
The short of it
ecobee4 Smart Thermostat with Built-In Alexa, Room Sensor Included
Top pick for most homes
Set a schedule or let the room sensors figure out where you are. Nuanced control over HVAC settings. Alexa fans will love the convenience of a wall-mounted Echo device.
Who we are: independent and unbiased tech enthusiasts who buy, try, and review these thermostats with our own money out of love for home automation and technology. We’ve never accepted freebies and all photos are our own unless otherwise noted. We source opinions from local HVAC installers and friends and family who are long-term users of various smart thermostats. This review is intended for visitors in the US and Canada. We hope you find our site useful and we welcome your comments and corrections.
What we love about the ecobee4 smart thermostat
It’s easy to schedule. Every smart thermostat on the market today is easier to schedule than the tiny-LED-screen programmable thermostats from 10+ years ago, but the ecobee shines on scheduling because you get complete control. You aren’t limited to a particular number of adjustment periods per day and you get tight control over the swing range (1 degree).
The ecobee4’s room sensors are reliable and useful. One sensor is included in the box and you can add more if you like. It’s a small, unobtrusive plastic square that runs for well over a year on battery power alone and monitors the temperature in whatever room you place it in. It communicates a temperature reading back to the main unit, which incorporates the temperature data in heating/cooling decisions. The sensors also act as motion sensors, so on days when your schedule deviates from the norm and you find yourself home, the thermostat picks up on that (or you can set it to “Follow Me” by default). Place a sensor in whatever room(s) you deem “mission critical” and the ecobee takes it from there.
The ecobee4 has excellent HVAC compatibility, possibly the best on the market right now. Every ecobee model ships with a Power Extender Kit in the box and it’s easy to wire it up in your furnace if you need to. We prefer the PEK to Nest’s “just try it and see what happens” solution to dealing with installations that lack a C-wire.
The (free, automatic) HomeIQ report delivers a summary of your HVAC’s runtime each month. This can be useful in figuring out why your HVAC is running when it is, but mostly we think of these as something to browse (briefly) each month when they come out. They are not always timely and they are not the end-all, be-all of HVAC data.
ecobee4 integrates with all major home automation systems, including Google Assistant, IFTTT, SmartThings, and HomeKit. This is even more important after Google’s announcement that they’re ending the “Works with Nest” program and potentially taking a lot of integration with 3rd party systems along with it.
Nice touches and extras include a clock on the idle screen, “ESP” to help the thermostat’s built-in Echo distinguish which Echo you’re talking to in a room that has more than one, and alerts for maintenance reminders and temperature readings outside the desired range. If you decide you don’t want Alexa in your thermostat, it’s easy to turn it off and you no longer incur the bright red always-on light that bothered many customers at the ecobee4’s launch.
ecobee4 Alexa integration: the good, the bad, and the “meh”
Having Alexa built into a thermostat is a neat novelty, but it’s a novelty that wears off after a little while (for us it was about a week). The “good” here is that it’s fun and easy to adjust the temp on the fly using only your voice. We did this a lot in the first few days with our ecobee4, but then we settled on a schedule we like and didn’t really adjust it from there. There’s only so much of my life I want to dedicate to tweaking a thermostat’s schedule, but at least the ecobee4 makes that easy and painless.
Here’s a downside you might not like: since anyone in your home can speak to Alexa and have her carry out a command, this means anyone in your home can control the thermostat and bypass the 4-digit PIN (if you have one on your ecobee) from anywhere in the house. If you want to maintain iron-clad control over your home’s temperature for whatever reason, then you’ll want to disable Alexa or consider a different thermostat.
As for the “meh”, well – it’s just a crappy Echo Dot stuffed into a thermostat. Don’t expect a miracle. If you live with someone named Alex or similar (like we do), expect misfires during normal conversation. It even picks up certain chains of words and phonemes and interprets them as “Alexa”. All Echoes have this problem, and it’s why people change the wake-word to Echo or Computer, but you can’t do that with the Alexa built into the ecobee4. You’re stuck with “Alexa”.
Sound quality is abysmal so you won’t even care that it doesn’t integrate your favorite music services, so we’re surprised at the number of people complaining about this online (was there really that much demand for thermostats to double as speakers?) but other familiar Echo features are missing as well, such as messagin.
If you don’t want Alexa in the hardware, you might want to pick up an ecobee3 while there’s still some stock left. It’s not quite the exact same thermostat – it gets firmware updates at a different pace than the 4 – but you can sometimes find it at a bargain since it was effectively discontinued a couple years ago.
It’s also worth pointing out that you can control this thermostat via other Echo devices in your home, even if you disable Alexa on the thermostat itself. We turned off Alexa on the thermostat eventually since it kept picking up our daughter’s name on accident, but we still enjoyed controlling it from the Echo in other rooms of the house. We also have it set up with our Google Home (which doesn’t seem confuse anything with “Okay, Google…”) and it works fine through that, too.
The app walks you through installation with animations and diagrams. Overall, it was easy to follow (and we have a toddler adding layers of challenge to every home project).
We’re old, and we’ve been through plenty of complex installation processes. This wasn’t one of them.
Linking the thermostat to the ecobee app was easy. Just enter the 4-digit code given to you by the thermostat and it’s connected.
Setting up Alexa was easy, too – just enter your Amazon credentials and she’ll start responding. You’ll have to add the ecobee as a device in your Alexa app, too, but once that’s done you should be able to issue voice commands. It’s kind of weird that the built-in Echo doesn’t “know about itself”, but we got through this after only a moment of confusion.
On-unit settings vs. web portal settings vs. app settings
Confusingly, the settings you can adjust for your ecobee vary based on where you access them from. This had us utterly baffled for a little while. We knew we saw a setting but we couldn’t find it again. Surprisingly, the app offers the least amount of access to the thermostat’s settings.
|Smart Home / Away|
|Reminders and Alerts|
|Access Control (PIN)|
|Configure Apple HomeKit|
How the ecobee’s room temperature sensors work
The included room sensor is small, wireless, and easy to forget about once you place it somewhere. You can add up to 50 to your thermostat.
The sensor reads the temperature of the room it’s in and reports it to the thermostat, so the thermostat can better determine if more heating or cooling is needed. Think of it like telling your thermostat which rooms you really care about (and when).
Just be aware that the ecobee4 and its sensors don’t actually equalize temps across your home or fix your perpetually cold room without turning your warmest rooms into saunas. It can’t do that. The ecobee4 can’t make up for a strained HVAC system, a home that’s all windows on one side, poor/uneven insulation, etc.
Most of the time you’ll run the ecobee with a schedule, but if you want to base its actions on whether you’re home or not you have some options. The room temperature sensors are also motion sensors and can be used to determine if someone’s home. The ecobee4 also supports geofencing, where it uses your phone’s location to determine whether you’re home or not.
Here’s a great potential use for the sensors: imagine that your home office is always cold compared to the rest of the house. You place a sensor in your home office so that on days when you work from home, your ecobee knows you’re there – and runs the heat until your home office is at your desired temperature. You stay comfortable all day and you don’t even have to fiddle with the thermostat’s day-to-day programming. No overrides needed.
We placed our one and only room sensor in our daughter’s room, so it was pretty useless at knowing when we were home since neither of us really goes into her room outside of wake time and bedtime. Geofencing was reliable, but with one of us working 30 miles away and the other working at home (and running errands within 1-2 miles, not enough to leave the geofence), the feature wasn’t super useful for us. I could see it being excellent for a family that leaves at different times and commutes 5+ miles from the home for work/school before returning home at different times. Your mileage may vary.
Home automation integration
The ecobee4 integrates with pretty much every major home automation hub, including Apple HomeKit. You can use this integration to develop more elaborate routines, such as setting a temperature and turning on lights when you enter the geofence around your home.
Even though Alexa is built in to this thermostat, you can still control it via other Alexa-enabled devices. For example, if you’ve got an Amazon Echo next to your bed you could tell that Echo to raise the temperature a few degrees and your ecobee4 will still get the command.
HomeIQ reports leave a lot to be desired
Don’t get excited – the Home IQ reports aren’t as cool as you might be imagining. If you’re familiar with the Nest ecosystem you might be expecting a page in the app showing recent usage statistics and you’ll be disappointed to know that there’s nothing similar in the ecobee app or website.
Furthermore, you won’t get your first HomeIQ report until you’ve had your ecobee thermostat up and running for a full calendar month from start to finish. So if you install it on the 2nd, you won’t get a report for that month. I don’t know why they can’t make this better, and it’s something Ecobee should definitely improve because us nerds want these reports.
The report you do get is kind of nifty, though – HomeIQ reports are free and once you figure out how to read them, they’re useful for figuring out:
- Inside temperature vs. outside temperature
- When the heat, aux. heat, air-conditioning was running and for how long
- Humidity levels
- When “Smart Recovery/Early On” was running
- How your HVAC system responded during “Follow Me” mode
You can dump all this data to CSV and run your own analysis on it, too.
Also, the reports can only be accessed through the website – not the app.
Excellent 24-volt HVAC compatibility
Assuming you have a 24-volt HVAC system (central forced air, central heating, not electric baseboard), there’s a good chance the ecobee4 will work with your wiring. If you have a C-wire, you’re good to go. If you don’t have a C-wire, the ecobee4 comes with a Power Extender Kit that you attach to the wires inside your furnace to basically add the same functionality. (Read more about what to do if you’re missing a C-wire here.)
More great ecobee features
Everything we loved about the ecobee3 is still here, including:
Alerts are a great way to keep an eye on your house when you’re not around. You can set up your ecobee4 to alert you for a variety of conditions, including:
- Time for HVAC maintenance (you can even include technician contact info in this alert)
- Furnace filter needs to be cleaned/replaced at the interval you set
- Ventilator filter needs to be cleaned/replaced at the interval you set
- UV lamp needs to be cleaned/replaced at the interval you set
- Temp is lower than X (you choose X, between 35 and 68 degrees F)
- Temp is higher than Y (you choose Y, between 60 and 104 degrees F)
- Auxiliary heat source has run longer than X (between 30 mins and 8 hours)
- Humidity is too low/high (acceptable range 5%-95%)
- Error condition alerts
- Lost communication with sensor(s)
- Low sensor battery alerts
Alerts can be displayed on the hardware unit (optionally) and/or emailed to your email address (optionally). You can choose which alerts you want and set the rest to OFF.
The ecobee app guided us through the installation and makes it easy to set up a schedule. The app doesn’t give full access to all of the thermostat’s features (you’ll have to stand at the unit for that) and it doesn’t include any kind of usage reports. You’ll have to log into the ecobee website to see your HomeIQ reports.
Smart Recovery is the name Ecobee has given to its thermostats’ ability to learn how long it takes your home to reach a desired temperature and start pre-heating or pre-cooling in advance. If you want your home to be 70 degrees by the time you arrive home at 6:00pm, it will look at your home’s current temp and start heating at say, 5:20 to make that happen. You can read more about how Smart Recovery works here on the ecobee site.
Lock it down with access control levels
If you are using the ecobee4 for a vacation rental (or maybe you have someone in your home or office who doesn’t understand the concept of energy bills), you might be happy to know that the ecobee4 offers some control over who can adjust what settings.
You can lock the ecobee4 thermostat down at varying levels via the thermostat itself:
- Temperature and quick changes
- System and settings
Attempting to alter these settings requires the person at the thermostat to enter a four-digit PIN. (Look in Installation Settings for these options.)
You can also:
- Set a desired maximum temperature and minimum temperature (must be at least 12 degrees apart)
- Turn off all control at the thermostat itself
However, anyone who is logged into the app can bypass these controls. There is no way to set it so that certain app users are restricted in certain ways. Also, if you integrate the ecobee4 with Alexa, then anyone who can speak to Alexa can raise or lower the temperature that way.
Control over HVAC equipment settings
ecobee4 offers control over all of the following (get comfy, this is a loonnng list – I bolded some of the most popular ones):
- heat pump configuration (if present)
- fan control (if present)
- humidifier accessory configuration (if present)
- dehumidifier settings (if present)
- furnace settings
- ventilator accessory settings (if present)
- thresholds (temp and time thresholds associated with heating and cooling equipment)
- heat/cool minimum delta
- compressor min cycle off time (enforces a minimum time that the compressor must be off between cycles to prevent short cycling)
- compressor min outdoor temp (prevents compressor running when the outdoor temp is too low)
- heat differential temp (difference between current temp and set temp before system calls for heat again) – sometimes called temperature swings, can be set anywhere from 0 to 3 degrees F (0 to 1.7 degrees C) and in 0.5 degree F (0.3 C) increments
- AC overcool max (uses your AC to reduce humidity by cooling beyond the set point)
- heat/cool min on time (set the minimum equipment run time in “heat” or “cooling” mode – 1 to 20 mins)
- compressor running max times
- compressor temp deltas
- temperature correction (if you find the displayed temp doesn’t match the actual temp, this will let you enforce an offset)
Room for a few improvements
As we said earlier, the November 2017 firmware update took care of some of the more pressing Alexa issues: you can now disable the microphone without incurring the always-on red light of doom and ESP is They even added the clock back onto the idle screen!
Here’s what we hope to see get improved in 2019:
- Support for changing the wake word
- No more month-long wait for your first HomeIQ report
- Better usage data in the app itself
- Better server reliability – ecobee suffered some noticeable outages during winter 2019 (read more on that here)
- Less confusion over what settings can be changed in the app, the web portal, and on the device itself
Should you upgrade?
If you don’t have a smart thermostat, the ecobee4 is an excellent choice – especially if you are already a fan of Alexa. We think you’ll love it, for all the reasons detailed in this review. This is the most fully-featured thermostat on the market right now and it supports a mind-boggling array of home automation systems. Monitoring your home remotely is a huge plus – we often use our smart thermostats to “check on” our home’s temp when we’re away during exceptionally cold weather.
If you have a Nest, you wouldn’t be alone in switching to an ecobee – many people who go from Nest to Ecobee say they love the bigger screen, the straightforward scheduling, the room sensors, and the ecobee’s better ability to deal with one-off changes to your daily schedule.
The only folks who might not be best served by upgrading to an ecobee4 are people who already have an ecobee3 or ecobee3 lite and at least one Amazon Echo device. If you have this, you have everything an ecobee4 has to offer minus Alexa inside the thermostat itself.
If the ecobee4 is right for you, go ahead and pick one up – we think you’ll love it.
The final word
With its smart sensors, a multitude of control options, ease of scheduling, and the convenience of Alexa built in the ecobee4 is a winner among smart thermostats. Like all smart thermostats, the ecobee4 is affected by occasional server outages, so it may not be your perfect remote home-monitoring solution. (It continues to operate your HVAC without server access, but you lose the ability to control it from anywhere via the app or website.) The included Power Extender Kit makes the ecobee4 the most widely compatible smart thermostat on the market today. Overall, the ecobee4 is our favorite and we highly recommend it.