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Model # RTH3100C

Internet # 202024252

Store SKU # 353971

Digital Non-Programmable Thermostat for Heat Pumps

This item has been discontinued.
The Home Depot no longer carries this specific product.

$39.67 /each




Model # RTH3100C

Internet # 202024252

Store SKU # 353971

The Honeywell Digital Non-Programmable Thermostat for Heat Pumps is for use with heat pumps that have auxiliary (back-up) heat. It is easy to use and install, with precise temperature control of +/- 1°F. The backlit display is easy to use and an emergency and auxiliary heat-light indicator is included.

  • Non-programmable thermostat for use with heat pumps with auxiliary (back-up) heat
  • Emergency and auxiliary heat light indication
  • Precise +/- 1°F temperature control
  • Backlit display for easy viewing
  • Easy to use and install
  • Home Depot Protection Plan:

    Home Depot Protection Plan

Info & Guides

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Product Depth (in.) 
Product Height (ft.) 
Product Height (in.) 
Product Width (in.) 
Color Family 
Control Type 
Number of HVAC Zones 
Operation Type 
Thermostat Type 
Heating and Cooling 
Voltage (volts) 
Warranty / Certifications
Certifications and Listings 
No Certifications or Listings 
ENERGY STAR Certified 
Manufacturer Warranty 
1 year limited warranty 


Rated 4.5 out of 5 by 50 reviewers.
Rated 5.0 out of 5.0 by Easy My husband was kind of weary to fool with it but I said all the reviews said it was very simple to do and "you can do anything" lol so he did and it was the simplest project ever!! We love it November 10, 2015
Rated 5.0 out of 5.0 by Digital Thermostat for Heat Pumps This thermostat was a replacement for a similar Honeywell thermostat we had for years. This was an improvement with the screen and it's easy to use adjusting buttons. We wanted something simple and easy to operate which this thermostat is. November 10, 2015
Rated 5.0 out of 5.0 by Super simple to install Have never installed a thermostat before. As long as you read the directions and take your time, it installs without a hitch. My mom also has this thermostat and it's a good one. Would recommend to anyone. November 7, 2015
Rated 5.0 out of 5.0 by Easy installation Easy to install, even I, the wife could do it with no problem October 27, 2015
Rated 5.0 out of 5.0 by Awesome easy to install easy to install works great. easy to read, accurate temp. September 18, 2015
Rated 5.0 out of 5.0 by Great for the Price. I bought this to replace an older analog thermostat for my heat pump. I installed it myself in about 20 minutes and it works great. The aux heat kicks in when its more than 2 degrees lower which is a lot more responsive than the analog one. I did not go for a programmable one on account of my routine is to unpredictable. July 31, 2012
Rated 4.0 out of 5.0 by Great basic unit, but no short protection Great basic thermostat for those who don't want to fiddle with higher-level programming. Only problem is the unit has no self protection for short circuits on the control lines. I had a random short on my air conditioning control circuit line that blew the relay in the thermostat twice before we diagnosed the problem. The simple addition of a fuse or resetting button breaker would have saved an otherwise destroyed unit. Most other mfg models have at the very least a user-replaceable fuse. The good news is Home Depot exchanged the units, no questions asked. June 10, 2015
Rated 5.0 out of 5.0 by Thermostat for Heat Pump The thermostat works great with our system. It was easy to install. Our existing wiring didn't match what was in the instruction manual. I called the customer service line and they were very helpful and gave me the correct wiring for our system. I would recommend this product if you are looking for a non programmable thermostat. February 19, 2011
  • 2015-11-25 T10:29:06.827-06:00
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