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  • Mercury free thermostat with simple worry-free operation.
  • Honeywell Classic Round design, world's most popular thermostat.
  • Precise temperature control for heat only systems.
  • Classic round styling.
  • Decorative wall cover ring included, hides wall marks from previous thermostat.
  • Compatible with heating only systems - forced air (gas, oil & electric), hot water & steam, heat pumps without backup.
  • NOT compatible with electric baseboard heat (120-240V), heat pumps with backup or multi-stage heating/cooling.
Manuals

Classic Comfort Made Easy: Honeywell Round Non-Programmable Heat Only Thermostat

Over 70 million homes can't be wrong - the Honeywell Round Thermostat is a user-friendly favorite for its reliable performance.

Classic Design

The familiar round design with an easy-to-read dial makes setting your comfort level a breeze.

User-Friendly

No complicated programming, just turn the dial to your desired temperature.

Modern and Reliable

Mercury free and featuring a decorative covering ring to conceal surrounding wall marks, this thermostat is a modern classic.

Built to Last

Honeywell quality ensures long-lasting performance.

The Honeywell Round Thermostat is a perfect choice for anyone who wants a simple and dependable way to control their heat. The Honeywell CT87K Thermostat is compatible with heating only systems including: forced air (gas, oil & electric), hot water & steam, heat pumps without backup.

  • Single-Stage Heating and Cooling: No
  • Multi-Stage Heating and Cooling: No
  • Heating Only: Yes
  • Cooling Only: No
  • Compatible with Warm Air Furnace: Yes
  • Compatible with Central Air Conditioning: No
  • Compatible with Heat Pump (No Aux./EM): No
  • Compatible with Heat Pump (With Aux./EM): No
  • Compatible with Hot Water: Yes
  • Compatible with Steam or Gravity: Yes
  • Use with Floor/Wall Furnace 24V or 750mV: No
  • Use with Volt Gas Fireplace 24V or 750mV: No
  • Use with Pellet Stove for mV Thermostats: No
  • Use with Electric Baseboard 120V-240V: No
How do I reset my Honeywell Thermostat?

There isn't a universal reset for all Honeywell Non-Programmable Thermostats. The process will vary depending on the specific thermostat. However, here are the two most common methods:

Method 1: Power Cycle Reset

  • Turn off the power: This can be done by flipping the breaker that controls your HVAC system, or by removing the batteries from the thermostat (if battery-powered).
  • Hold the reset button (if present): Some non-programmable Honeywell Thermostats have a dedicated reset button, usually located near the display or behind a cover panel. If your model has one, hold it down for about 5-10 seconds while the power is off.
  • Restore power: Turn the breaker back on or reinsert the batteries.

Method 2: Menu Reset (for some models)

  • Check your thermostat for a "Menu" button. Not all Honeywell Non-Programmable Thermostats will have one.
  • If present, press and hold the "Menu" button. While holding it, navigate through the options (if any) until you find a "Reset" function. This might involve pressing arrow buttons.
  • Select "Reset" and confirm the prompt (if applicable).
Product Details
Product Specs
UPC:
085267263672
MPN:
CT87K1004/E1
Category:
Thermostats
Product Manuals
Honeywell Home Round Heat Only Non-Programmable Manual Thermostat - CT87K Video

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CT87K1004/E1 customer reviews

Overall Rating

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5 Reviews
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4 customers recommend this product
Honeywell Home Round Heat Only Non-Programmable Manual Thermostat - CT87K Reviews
Roland Dumas
July 6, 2020
Verified Purchase
Homeowner

Great product consistent with its name, keep up the great work. Thanks

Thomas Hayes
December 24, 2018
Verified Purchase
not good

The temperature control part works but the thermometer to read room temp did not work from day 1. I needed the thermostat so will have to live with what i got. Poor quality control

Response:
We apologize for the inconvenience. We'd be happy to assist you in resolving this matter. Please see the following attachment for additional information: Return Policy and Instructions
Dianne Karl
November 13, 2018
Verified Purchase
Thermostat

Very satisfied, fast delivery, good instructions, easy to install.

Katty
March 13, 2018
Easy

So easy to install. Best thermostat on the market, . I had an old one with the mercury And it lasted over 30 yrs. New one works effectively.

Brian  Reshetnik
November 24, 2016
Verified Purchase
Thermostar

Nice product I have used it in two different houses over two decades no problems. Keep making the product.

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