Honeywell Round Mechanical Thermostat Heat Only-CT87K at The Home Depot
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Model # CT87K

Internet # 100476730

Store SKU # 376234

Round Mechanical Thermostat Heat Only

Honeywell Round Mechanical Thermostat Heat Only

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

$26.98 / each
Item cannot be shipped to the following state(s): AK,GU,HI,PR,VI


Model # CT87K

Internet # 100476730

Store SKU # 376234

The Honeywell Round Mechanical Thermostat has dial-style mechanical operation in a traditional circular housing. It offers time-tested, precise temperature control in a simple, mercury-free thermostat.

  • Non-programmable
  • Familiar and easy-to-use dial
  • Precise temperature control
  • Suitable for home heating systems


Assembled Depth (in.)  3.5 in  Assembled Height (in.)  9.25 in 
Assembled Width (in.)  7 in  Certifications and Listings  No Certifications or Listings 
Color Family  Whites  Control Type  Dial 
ENERGY STAR Certified  No  Manufacturer Warranty  1 year limited warranty 
Number of HVAC Zones  Operation Type  Mechanical 
Product Depth (in.)  1.5  Product Height (ft.) 
Product Width (in.)  Returnable  90-Day 
Shape  Circular  Thermostat Features  No Additional Features 
Thermostat Type  Heat Only  Voltage (volts)  24 


Rated 3.5 out of 5 by 41 reviewers.
Rated 5 out of 5 by good replacement easy to install, no mercury, and much easier to operate than the programmable it replaced August 19, 2014
Rated 3 out of 5 by Don't work on small wall heaters These thermostats don't work with small wall heaters that are common in apartments in Southern California (such as Williams wall heaters). The heater thermostat wires don't produce enough voltage or something. I've tried to install them twice already (with a timespan of a couple of years between the installations). I wish there would be something written on the package. September 29, 2013
Rated 4 out of 5 by A great value. This thermostat is much more responsive than our old one. It has already cut down on our oil usage. It took about 10 minutes to install, and the directions were easy to follow. We are pleased with our purchase. February 18, 2014
Rated 1 out of 5 by Don't buy it!!!! Needed to replace old thermostat. First tried 1 - then 2 - then 3 of these thermostats. None of them worked. Contacted Honeywell for assistance----no help. They said it must be "incompatible" or that the store had a "bad batch" of thermostats (Boy that was helpfull). Bought a different brand---installed it & it worked immediately! Stay away from Honeywell. May 17, 2012
Rated 1 out of 5 by Failed in 13 Months I suggest you not purchase this thermostat. Honeywell quality is suffering. This thermostat failed after only 13 months. The Honeywell transformer for my furnace failed in less than 11 months. Emailed Honeywell and customer service and they told me tough luck; warranty is only goof for 1 year. It's sad their product can only last a bit more than a year without failure. I would NEVER purchase or recommend a Honeywell product. Poor quality and customer service. November 13, 2012
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