Easy to read backlit display with soft-touch button interface.
Quality Temperature Control for Heat Pump with Auxiliary Heat.
Mercury free thermostat.
Compatible with Heating and Cooling/Heat Pump with Electric Backup
Does NOT work with Electric Baseboard Heat (120-240V), Heat Pumps with Gas Backup or Multi-Stage Heating/Cooling.
The Honeywell RTH3100C1002/A Digital Heat/Cool Pump Thermostat has been redesigned to offer users peak performance in an incredibly simple and intuitive manner. Select your heating and cooling preferences with absolute precision with the model's highly responsive and intuitive design. Featuring a green backlit screen and a soft-touch button interface, the controls have been modified in an effort to make this thermostat the absolute height of accessibility. Should the power in your home ever give out, the RTH3100C1002 will employ an intuitive technology that will allow it to remember all of your previous setting and continue to function normally once power is restored. This digital thermostat is specifically designed for heat pumps and should never be operated with any other systems.
The Honeywell RTH3100C1002/A Digital Heat/Cool Pump Thermostat is compatible with Heating and Cooling Heat pumps with electric backup.
I wanted a thermostat that was a little more modern than my 25-yr-old mercury bulbs which still worked great so bought a Honeywell at Home Depot only to find out that it would not work with my Heat Pump which has Emergency Heat. So I went off to a variety of websites and found the description of the Honeywell RTH3100C1002/A seeming to be exactly what I needed. After checking some prices elsewhere, Honeywell came up with the best. Shipped quickly and the installation was almost a breeze. Turns out I had a T wire in the old thermostat which I didn't know where to connect. A quick call to Honeywell got a very astute technician who said I didn't need the T wire in the new thermostat. Tape it off and let it hang in the wind. Connected all the others per instructions and the new thermostat looks and works great. Total removal of old and installation of new took about an hour total including the technician call and working with small wires and screws when my hands are made for much bigger things.
Reviewed: 07/24/2017 by scott weldon
works great. Easy to install.
Reviewed: 04/06/2016 by James Wilson
Reviewed: 05/28/2015 by William Roop
Currently have two heat pumps at my home, one of which has the Honeywell thermostat. I like the Honeywell thermostat as it's much easier to read, see and set. This is why I purchased this second thermostat to replace the existing thermostat.
Installed and worked perfectly
Reviewed: 02/05/2014 by dave Marshall
It installed and worked perfectly
Works fine, once connected right.
Reviewed: 01/21/2014 by Lawrence Donohoe
Device works as advertised. I replaced 2 Trane Weathertron mercury bubble thermostats. The wiring was a problem. Two calls to customer support got two different answers - both wrong! I had to replace fuses on the air handler until my local HVAC guy told me the correct connections.
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