31% of 111 verified ecobee Smart Thermostat Premiumowners don't recommend it — based on real owner comments from Reddit, enthusiast forums, and YouTube.
For balance: 61% recommend it. This page collects the complaints so you know what you're signing up for — read the full owner report for both sides. How we score
“Yet this $250 thermostat is just making random guesses at CO2 based on VOC which don't always correlate well.”— ten10thsdriver on Reddit
“the ecobee will report anywhere from 1-6 degrees or more of temperature swings after turning on the ceiling fan.”— digitalcircuit on Reddit
“Air quality sensor on my ecobees aren't reliable as one would expect.”— maxlonian on Reddit
“I just installed an Ecobee Premium. I have a heat pump with gas furnace backup. My heat pump has always run into the low 30’s. Now it won’t come on until the outside temp is in the sixties. I’ve played with every setting and no go.”— kant57 on Reddit
“I have a few ecobee premiums with all the "smarts" turned off because the features make them irratic.”— Amazing_Bed_2063 on Reddit
“while the Ecobee is consistently off by 5 degrees. Everything has been sealed, so there’s no drafts.”— DallasFBIoffice on Reddit
“I’ve only ran into issue with the new Ecobee Premium Thermostat that I have now. I had to tweak the settings to have the heat turned on and controlled by the HVAC instead of having Ecobee control it. That worked out but weeks later cause issue for the heat taking forever to turn on.”— MIKECANVAS on Reddit
“We have 2 ecobee smart premium stats and it's been a nightmare. Smart thermostats are stupid!”— The_stixxx on Reddit
“Just installed Ecobee premium (w/ 2 Smart Sensors) and I am having issues with inaccurate readings on the temp sensor of the main unit. Much more erratic and larger variations than the Smart Sensors even when they are placed in close proximity to the main unit.”— whosurcaddie on Reddit
“So far I’m not impressed with the ecobee.”— Pure-Statement-8726 on Reddit
“Ecobee has been the worst smart thermostat I have owned. None of the features of the Ecobee Premium have worked well for me. Temperature and humidity are 12-16 degrees/percent off. Siri integration is shit. HomeKit integration is shit. The app is shit.”— quafs on Reddit
“This is a huge issue as to where depending on the day OR night I continuously have to get on the app or use Alexa to change temps - both are super annoying and time consuming.”— @LSUsaintsFANS on YouTube
Not complaints — practical notes from owners that didn't affect the score.
“My ecobee smart thermostat premium acts as a Siri speaker. I can talk to it as if it’s a HomePod basically.”— drusoicy on Reddit
“Last night I swapped a Nest for Ecobee Premium. I did not download the app until after the physical installation, which was an error.”— TrickySite0 on Reddit
“i just switched to Ecobee Premium smart/Wi-Fi stat with extra room sensors”— Important_Can_7940 on Reddit
“I've since tweaked some of those settings and everything seems fine now. I can't say if I configured everything properly, but I'm at least warm now.”— JoeyCalamaro on Reddit
“I just got the premium after replacing my original ecobee3. Was going in for the enhanced but the premium was marked for clearance and was $30 cheaper than the premium, so why not?! I have mine exposed to HomeKit through home assistant so I can’t seem to get Siri to work, but it was so slow when I tested it it didn’t bother me.”— idontknowabob on Reddit