HoneywellHome RTH8800WF2022, T5 WiFi Smart Thermostat, 7 Day-Programmable Touchscreen, Alexa Ready, Geofencing Technology, Energy Star, C-Wire Required

What can I say, it is a thermostat and it looks nice, I bought it for these reasons. I bought it in April of 2023 right after I had a leak repaired and the old thermostat looked very dated in a freshly painted room.It installed very easily and It really does look nice and new in the room. Once up I was pretty happy with it. I set a schedule and that's where the enjoyment stopped. As time went on I began to wonder if I had a leak or something, I had one in the past after all. It would not cool, and the temperature in the house would rise. I'd set it to 71 but the temp would slide degree by degree to 77 (which is what it was scheduled to hit at 11pm) and stay there for the night. Suddenly waking up freezing in the morning. The pillows in the bedroom were muggy and damp intermittently. Some days we'd sit at 77 degrees for no reason. The heat pump is running near 24/7 trying to cool the house....Luckily I am pretty DIY and troubleshooting for hobby so I bought gauges to monitor my unit and learned what Superheat and subcooling are. I determined that I don't have a leak! So what is it? I have an energy saver cycling box from the power company, I have that taken off, it takes a few weeks for them to do it. but my problem persists! I'm going mad, inject dye to search for leaks? I change filters, etc etc. anything i can. I'm debating draining the unit, perhaps the repair guy put in too much or incompatible oil!I begin to suspect the thermostat, all the internet says it couldn't be the thermostat, no no It could never.. But I say I say you know what let's reset the thing and strip away features. So I did, Reset it, turned off scheduling, wifi, and anything else "smart", got into the special menu and found "adaptive recovery" looked it up and determined this and scheduling were my problems! Because I wanted 72 from 8am to 5pm but the 77 at 11pm. The stupid "smart" algorithm thought that meant I want to be 72 in 8am and for the rest of the day slowly drift to 77 by 11pm and then freeze us half to death at 5am to be 72 again by 8am. If I set my schedule to all 72 degrees it will never leave 72 even on a "hold". I assume because of crap programming that adaptive recovery does not take into account the "hold" or manual input/changes which is bullcrap.I decided to see how badly programmed this algorithm was. I put a schedule on with crazy temperatures like 50F at 8am and 90f at 5am or something. The stupid thing would actually turn the HEAT ON to after 8am so that it be 90F by 11pm even though the cool setting was set to be 50F at that time. what a dumb program. Heating when it should be cooling!I was smart enough to figure this out and disable these features, I won't even use the schedule now Im too afraid too Which is same because I really wanted to let the AC drift off temp at night but its not worth it to trigger the "smart" alogrhtium's stupidity which seems to have the ability to override your manual temperature settings even without being turned on. I see no where to fully disable this "smart" features.I feel bad for anyone that calls HVAC specialists to try to fix these issues and they get talked into the a whole new system because of some programmers' poor programming skills.

I bought this thermostat to replace the T6 ProSeries from Honeywell, so that I wouldn't have to run up and down the stairs every time I wanted to turn off the heat. Since you need a PhD in order to set the schedule on the T6/T5 models, I wanted the flexibility of setting up routines in Alexa to have it turn on at certain times and run for only a few hours instead of constantly. Because the Honeywell T6 is basically a non-wifi version of the T5, installation was as simple as pulling off the T6 and slapping on the T5. Pretty much plug and play. HOWEVER, if you do not identify your proper AC/heating in the app setup, you will experience non-stop frustration!! Initially when I tried to operate the T5, I had my settings set to Conventional Air, Cooling stages=1, Heating Stages=1. This just resulted in only turning on the furnace fan and not the outside unit. During my troubleshooting, I noticed the O/B wire which let me know that I had to configure the heat pump in my setup. So now the new app configuration is Heat Pump (instead of Conventional Air), Reverse Valve=O (most common), Cooling stage=1, and Heating stage=1. If you are pushing out cold air instead of warm air from your system or vice versa, then that means that your Reverse valve is energizing on the wrong setting. Just go back into the app and change the setting. Other than that, I can't say enough nice things about my new thermostat. Now I can lay in the comfort of my bed and tell Alexa to change the temperature or shut off the system.

Very happy with product, product arrived early and since it connects with power company it’s saving us on our electric bill as well

Amazing, easy to install, and easy to use with the app. I was nervous about getting a C wire connected but once it was all done I was so thrilled to be able to control the house temps from wherever I was. Setting it up with the app is super easy as well and makes connecting to the WiFi seamless. Just make sure you know what type of heating, cooling and fan system you have because it will ask. Everything has been great so far!