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

Changed the old one that became defective, this unit replaced it and is easy to understand.

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.

Excellent value works great

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.

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