I was first to give at least 1 star....why is no starts not an option? The only reason I have this thing is because it came with my new home. Note to KB Homes, just put a nest in...or really ANY other thermostat for that matter. I’ll gladly pay the difference. Setup.....an absolute nightmare. I actually had to walk away for the night and come back the next day, at which point everything I’d done day before magically worked. I’ve gotten pretty proficient at navigating the thing with the “next” button, which is only useful ummm the 20% of the time I’m actually home. That’s where the app should come in, right? False. Somehow I have two weekday schedules, unsure how to delete one but both are wrong. I’ve tried saving a new “wake” time along with different heat and cool settings, but it reverts back to some sort of original setting. Maybe it’s what I manually set on the thermostat itself in the beginning? Wouldn’t know...came home today to find the screen completely black, won’t light up, nothing. It’s 8 months old. I honestly don’t think I’ve met a worst product/app combo. Presently it says my profile is “away.” Ironically, I’m both home with geofencing on, AND my schedules has “bed” set for 9pm...I’m in bed, with location on and it thinks I’m away. And oh my god can we get some facial recognition, a finger print or at the VERY LEAST a “remember me” option at sign in? Why in the actual F do I have to type this in every time? Honestly, I’d rather someone back into this thing because maybe they’d be better at using it than I. Don’t buy this thing, I beg of you.

Major bugs & flaws with app that are beyond irritating! The app freezes up, flickers & maybe allows you to use it once or twice (if you’re lucky) before having to sign in AGAIN. The schedules on app tend to change on their own or do not save if changed by user. Our thermostat stopped working just after 3-4 months, so our AC company that installed it, had to install a new one. They also stated that back in the day (before everything went high tech) that COR products were really good. But not so much now, considering the amount of time they spend repairing and/or replacing their thermostats. We spent $24,000 + on 2 new AC units, new duct work, etc. for our 2 story home. I should be able to grab my cell phone in the middle of the night to turn the temperature up/down as needed, quickly & with ease. But instead I end up having to get up out of bed to do so, because the app continuously signs me out & won’t accept my log in info...unless I mess with the app for 15-20 minutes. Then it’s impossible for me to fall back asleep! I normally don’t write reviews, but feel that I should...to help warn & save others FROM A LOT OF STRESS & FRUSTRATIONS!

If I could give this 0 stars I would. I unfortunately made the horrific mistake of switching from a Nest to the “top of the line CÔR” thermostat to accompany my new carrier HVAC unit. Since installation by Carrier certified installers this product has let me down. The app fails continuously I am unable to do basic function like adjust temperature let alone anything else. I am actually dealing with a situation now where the thermostat says it is in sleep mode yet the app states in Home mode with a completely different temperature output than what is on the thermostat. The stat says 70 degrees and setpoint 70 whereas the app says it is 72 with a setpoint of 72. The geofencing function is useless as it has never functioned properly. In addition there is a major issue where I set my fan to auto on the thermostat and it shuts off yet as soon as I open the app it turns it back on permanent and I cannot get it to switch to auto in the app. Complete garbage. The scheduling function is terrible as it often times over the past several months has changed the schedule for no reason. Meaning I noticed my home was quite warm and sure enough my entire schedule was changed and defaulted back to the original. All in all this was a terrible $500 investment, with professional installation. In addition to the above I have to have carrier service techs come to my house about every 6 weeks because the app states there are numerous malfunctions with the HVAC system and they confirm it is an issue with the app not the system. So what good are the notifications? While there are out on a 6 week rotation, at my expense I might add, they also have to adjust the fan speeds due to what I am being told is a communication function between the thermostat and the system causing the recirculating fan speeds to increase from the required installation specifications.

We noticed that at night the temperature is very high, really we never looked at the thermostat, today I noticed it was marking 81 F, so o tried to adjust it manually without success. Then try to recover password and remembered last time I tried to do it never got an email and support suggested to submit the password I wanted by email so they could configure it (not very secure of course). Attempted to recover password hopping after a year this would not be an issue , but the problem persist, I created a new account and when I tried to add a new device to the app, although I provided full acces to location services, the app stands is not enable and I have to manually tu the address, tried like 10 times adding the address, the first 3-4 it hung after manually introducing the address, then the 5-10 times it gave me a timeout error in seconds. Really really bad app. Thermostat can’t be configured, the screen shows cool to 74 heat to 72, but temperature is 82 and can’t be set lower.