Honeywell Home 5-2 Day Programmable Low Volt Thermostat: White, Plastic, 1 Year Warranty, AA Battery Required

Horrible!! I had a programmable thermostat that worked great. I got a new boiler and they gave me this one. To say I hate it is an understatement. This thing is unnecessarily difficult to use. Every aspect goes against you. It only lights up for a couple seconds when you touch it so, when you are attempting to change anything, you have to do it quickly or use a flashlight. It makes you go through everything to change any settings. This thing is so bad Honeywell should be ashamed! I am guessing because they are awful companies are buying them at fire sale prices and charging customers full price. I used a highly rated company too so its infuriating. No don't buy this. Run don't walk away! Honeywell, you should replace them for free! Trust me, that 2nd star was a gift.

This is the most awful product in my home. It doesn’t work and my house is freezing. I have to buy space heaters. Please do not purchase!!!!!!! It’s impossible to figure out how to program it. The instructions are so confusing and you cannot override the time settings. It’s a disaster of a product. I am cold and it’s an absolute nightmare.

To call this a 1-week programmable thermostat is hugely misleading. It only programs one 24 hour cycle. By saying one week, does that mean that it will lose it's programming after a week? I installed this last night and programmed it. It lost part of it's programming when I checked it this morning and had to reprogram it. Also, the temporary temperature adjustments do not work at all. When I press them nothing happens.

This thing is not worth the money. I specifically wanted a thermostat for the WiFi. I finally got the WiFi hooked up and the thermostat works ok but it loses contact on and off and I get a COMMUNICATION ALERT. Tried all sorts of things but it's just junk. Need to go to another more reliable brand.

I'm utterly frustrated and exasperated trying to get simple functions.Beware - this model has the most bizarre setup,pre-programmed,and it's very difficult and counter-intuitive to try to get it to function on manual - or my own setting.After trying to change the clock time for Daylight Savings, I'm sorry I ever touched the SET button. The directions are twisted and don't work. The internal settings are for the birds,literally. It resets to default schedules that are maddening and wake me when my furnace kicks on at unexpected times, 4 times a day. I bought this model because I needed a single simple program. Whoever designed this seems out of touch with the needs of a common home such as mine. This is so bad, I suggest getting a different model with better reviews.

Bought last week No Backlit feature NOT Happy with that

This thing is the absolute worst. I'm pretty sure once it reaches its desired temperature it turns off and never comes back on. I suspect this because i wake up in a 50 degree house every morning, even if i set the thermostat to 85. It is negatively impacting my quality of life and would not recommend it anyone buy this item.

Impossible to program. Tried to lower the temperature of my own home, and it decided to make it even warmer. You had one job: make my house certain temperatures when I tell you. It wants to know what it should be in a week. Can we cross that bridge in a week please?

We inherited this thermostat when we bought our house. It is clumsy to program and difficult to override.

I’ve had a 30 year old Honeywell thermostats and have never had a problem. Bought the RTH221B. This one is the worst piece of plastic and wires ever put together. I programmed it to heat to 68°, but it pushes the heat up to 71°-72°. I’ve lowered the setting to 67° and it’s still registering 71°. I contacted customer service and they claim there’s nothing wrong. Really! This was a simple two wire installation so there’s no error in that. Additionally, when trying to install the batteries the whole thing fell apart and took forever to get it back together. Luckily this happened before it was a fixed to the wall, so laying it on a table was a bit helpful. Now I’m wondering what will happen when the batteries die; will I have pieces all over the floor.

Get it installed. works fine and then just stops functioning. Remove the batteries, put new ones, nothing. Reset panel. The thing is dead.

This Honeywell thermostat (RTH221B1039) has been in this house probably since when they first manufactured this model (I bought the house in 2019, manufactured home built in 1996). I’ve had to change the batteries only once since 2019 to today. I keep the temperature set (heat) at 65 F entire winter, 75 F (cool) for entire RTH221B1039 spring/summer/fall; that seems to give me the best rate on electric bill usage. I have kept the programmed days/times 3 or so degrees cooler/warmer when most people are gone during the day or asleep. I’ve seen many customers writing reviews based on negative experience. Is it due to the wiring during install? Is the type of HVAC setup correctly (my switch on back/inside thermostat has switch for OIL/GAS or heat pump). Also, my model is very specific that heat pump without emergency backup is not compatible. I cannot comment, and only speculate like I did above because I have not had those issues. I can share my setup: heating/“furnace” is natural gas, intact and original since 1996. The air conditioner is a huge green metal box outside of the house (commercial grade). Strangely enough no problems at all. I don’t know if this thermostat “plays better” with certain models of HVAC units? Now, having said that, I am going to “upgrade” and buy the WiFi version of this thermostat because it’s the simplest WiFi thermostat where I don’t need all bells and whistles, nor my life/privacy/soul sold forever online. I’m getting this other thermostat, along with the Honeywell security (locking) cover, because I’m tired of people constantly changing/messing with it when they’re clueless as to what they’re doing. But, I will still keep this old model as a backup (perhaps as an alternative wiring setup I can quickly switch over to).

I bought this product 5 years ago and never had a problem with it.

Pro installed about 6 months ago, 2020, and last night we had a power outage. This apparently caused the thermostat to reset or wipe all settings. Following instructions in the manual, VERY small print, attempted to reprogram the box. Looks like it took the imput but NOT WORKING HEAT. Reset furnace switch and reset thermostat program waited a few minutes, about ten, and turn on furnace. Blower runs, NO HEAT and at 6 degree F, it is cold.

This has a mind of its own! Do not follow the schedule. It is not supposed to to be awake till 8am and it will start kicking off at 6am or so!

I bought this thermostat a week ago and it has yet to follow the schedule I have set. It can't even respond properly to a temporary setting, which is basically asking it to run manually. I have never had such a poor thermostat. This will be going back to the store today.

Have had this product over a year and do not have one good thing to say about it. Started having problems right after purchase. Waking up to freezing temperatures when settings are all correct, this thermostat does not regulate heat or respond to temperature changes in the home.

does not turn on heat at set low temp, or keep heater on until set temp is reached. carefully programmed for all scenarios (weekday, weekend, day, night, evening, etc). But would only attempt to start heater when power switch was moved to OFF, then back to HEAT. Simply does not work.

Bought this a year ago and worked fine. Now it’s not sticking to the schedule. For one evening (home from work) programmed time, it heats 90 minutes early. Everything is programmed correctly, didn’t happen first season ‘heat’ was used. But we just switched over from AC to heat and it’s heating too soon for this setting every day. Who knows might be doing the same for another setting but we are asleep during the first heat up period.

If you follow the instructions this thermostat works great - it does exactly what it promises to do (one program for the entire week). My only complaint is that the batteries are required for it to work, not just to provide backup in case of a power outage.