H725 5/1/1 Day Programmable Heat Pump Thermostat, 2 Heat/1 Cool DIY Instal, with 4.5 sq. Inch Display

Omg this thermometer has different settings that you can preset for different days and it remembers them and holds the temperature for what you set it for for that day. This is a great game changer.

If you don't want or need a "smart" thermostat but want programmable settings to fit your lifestyle and cut heating bills, this is the ticket. It has a large, easy to read display, and compared to other programmable thermostats I've used over the decades, this is quite easy to program and change. Be warned, installation could present challenges, such as, slightly different spacing of mounting screws from your old thermostat. Oddly, the simplest legacy connection, a two wire red-and-white heat-only setup (wires labeled R or RH and W) turned out to be a major headache. The setup is not covered in the Installation Manual, but the logical guess is to connect to the RH and W/E terminals. Didn't work. After debugging that everything else was working, I posted a question on Amazon. Within hours, the seller responded: "you need to connect RH- W2 to realize the traditional thermal mode." Too bad they couldn't have just included this in the manual, considering how common this arrangement is in older homes. But kudos to the seller for the quick and correct answer. Good thermostat, good value, good customer support. Recommended.

Like many thermostats the instructions (both for installation if the wires are not exactly as expected) and operation could use some work. However, like others it's possible to search on the internet and find "generic" instructions that solve the installation problem. The operation is not so complex; together with the instructions it's possible to just figure it out. The thermostat itself works perfectly, is very accurate, and holds the set temperature perfectly.

Used re replace old thermostat, 24V simple 2-wire red-white wiring. Works beautifully, easy to program

I needed a quick inexpensive thermostat to test my recently-repaired heat pump system with suspected faulty thermostats. Basic thermostats at this price are not typically configured to operate heat pumps. This one is specifically designed to do so and controls 2-stage heating. 1-stage cooling with or without auxiliary or emergency heat (controls one or the other, not both; I hope I got this right?). It was just $31.99 (USD) (+tax). If it included automatic switching: heating-cooling/cooling-heating, I would leave it installed as my primary thermostat.Powered by the 24V transformer (requires a common (C) wire), or batteries only, or both, with the batteries acting as a backup power source. The batteries are held in the front, just behind a swing-down panel. Programmable: 5,1,1 (weekdays, Saturday, Sunday) or none (hold), backlit display (no always-on option), filter change reminder, 50-2000 hours, temperature offset (never understood this feature), compressor 5-minute lockout, and others. Running the wire took forever, but installing the thermostat was easy and quick.Could improve: Difficult to separate the unit from its wall plate. I used a butter knife. The supplied drywall anchors are weak, relative to the force required to separate the two halves. Use a plastic pry bar or butter knife, or risk pulling the whole unit out along with the screws and drywall anchors. This happened to me on one side. Replaced anchor.Overall: 5 stars. An excellent thermostat for under 35 bucks. Ordered on the 6th, arrived on the 8th.

After returning home to a cold house from a long trip, I found that our very expensive touchscreen wi-fi thermostat wasn't working. I needed to get something quickly in order to get the heat turned on, so I ordered this unit with next day delivery.Installation was simple using the included printed instructions. We have a Carrier heat pump with emergency heat, and this thermostat worked perfectly. When installing this for a heat pump, you'll need to know whether your reversing valve is energized during heating or cooling. Most are energized during cooling, but you can easily find this information by googling this for your particular heat pump brand. Once you have this information, you connect the reversing valve wire to either the O (for cooling) or B (for heating) terminal on the thermostat. This sounds more complicated than it really is.I didn't use any of the programmable features, as this was just a temporary fix until I can get a replacement OEM thermostat, so I can't speak to the ease of programming, but for setting simple heat/cool temperatures, it was very easy to use. This programmable unit was only a couple of dollars more than the non-programmable version, so I got this one in case I need to use it again longer-term.

It appears to work fine but it keeps telling my unit to use heat instead of cool. No troubleshooting with the company so I’m stuck with having to replace this one. What a waste of money!!!

I like that it lights up because my old one didn't. The down side is that the up and down buttons get stuck sometimes and the temperature after you set it and walk away can keep going up on its own. I just have to make such the buttons pop back out after I press them. Other than that seems to work fine.