Honeywell Standard Millivolt Non-Programmable Thermostat-CT53K - The Home Depot


Model # CT53K

Internet # 203186947

Standard Millivolt Non-Programmable Thermostat

Honeywell Standard Millivolt Non-Programmable Thermostat

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

$29.99 / each


Model # CT53K

Internet # 203186947

This Honeywell Standard Heat Only Thermostat features a simple design that is easy to understand. The thermostat allows you to simply adjust the temperature by moving the lever side-to-side. Used with 750 millivolt heating systems.

  • Easy to install and use
  • Includes integrated thermometer
  • Precise temperature control
  • 2-wires. Works with the following 750 mv systems: Gas fireplace and steam or gravity


Assembled Depth (in.)  1.25 in  Assembled Height (in.)  5 in 
Assembled Width (in.)  2.75 in  Product Depth (in.)  1.25 
Product Height (ft.)  Product Width (in.)  2.75 
Color Family  Whites  Control Type  Lever 
Number of HVAC Zones  Operation Type  Mechanical 
Returnable  90-Day  Shape  Rectangle 
Thermostat Features  No Additional Features  Thermostat Type  Heat Only 
Voltage (volts)  0.75 
Warranty / Certifications
Certifications and Listings  No Certifications or Listings  ENERGY STAR Certified  No 
Manufacturer Warranty  One year limited 


Rated 4.7 out of 5 by 9 reviewers.
Rated 5.0 out of 5.0 by millivolt ready & simple to use I bought these as replacement thermostats for our apartment building. We have a building that is about 60 years old with wall heaters that require a millivolt thermostat. So far we have replaced 3 of them for our tenants and they seem to be working out well. The other brands we have purchased didn't last very long. These being Honeywell I hope they will do better. So far so good. These also have a positive off & on switch which is a plus. December 17, 2013
Rated 5.0 out of 5.0 by Works like a charm Purchased for my elderly mother, who was having trouble seeing and adjusting a low end thermostat. She is very pleased with the large numbers and accuracy of the settings. December 17, 2014
Rated 5.0 out of 5.0 by This product works without any problems and instructions were excellent The thermostat that required replacing was mechanical and the contacts were pitted after several years of use. This unit was simple to install and works PERFECTLY ALL THE TIME. This unit uses the latest technology. November 5, 2013
Rated 4.0 out of 5.0 by Easy to install and works good This is easy to install and inexpensive to buy when being used in a High foot and forklift traffic area. January 30, 2014
Rated 3.0 out of 5.0 by Arrived with a broken part Waiting for replacement, and hopefully this one will work. October 2, 2014
2 >>


Standard Shipping includes delivery by small parcel service. Processing time varies by product.

Orders for this item may be expedited for an additional fee.

Other Delivery Options:

Express and Expedited shipping options are also available. Estimated arrival times are available in checkout.

If product is eligible for shipping to AK, HI and US Territories additional transit time and remote surcharges may apply.