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  • Mercury free thermostat.
  • Precise temperature control for both heat and cooling systems.
  • Classic round styling.
  • Decorative cover ring hides wall marks.

Simple Control for All Seasons: Honeywell Round Heat & Cool Thermostat

The Honeywell Round Heat & Cool Thermostat is a favorite for a reason – it's both reliable and incredibly easy to use. Over 70 million homes and buildings around the world trust the Honeywell Round Thermostat for simple temperature control.

Classic Design

The iconic round shape with a clear and easy-to-read scale makes setting your comfort level a breeze.

Simple and Precise

Large markings with audible clicks at every 2-degree adjustment let you know exactly what temperature you're setting.

Reliable Performance

Mercury-free design with a proven track record ensures long-lasting comfort.

Modern Look

A sleek design with a decorative trim ring complements any décor. Embrace simplicity with the Round Manual Thermostat.

  • Single-Stage Heating and Cooling: Yes
  • Multi-Stage Heating and Cooling: No
  • Heating Only: Yes
  • Cooling Only: Yes
  • Compatible with Warm Air Furnace: Yes
  • Compatible with Central Air Conditioning: Yes
  • Compatible with Heat Pump (No Aux./EM): Yes
  • 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
Product Manuals
Honeywell Home The Round Heat/Cool Manual Thermostat - CT87N Video

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CT87N1001/E1 customer reviews

Overall Rating

2 Reviews
2 customers recommend this product
Honeywell Home The Round Heat/Cool Manual Thermostat - CT87N Reviews
Stan W
August 25, 2021
Verified Purchase
Nice new design

I've had the old Mercury Honeywell Thermostat like this one. It worked until a furnace repair guy broke it. A little too rough. This one is very nice. I just wish I could tell whether it was triggering my HVAC on or off by looking at it. It installed easily with some care.

Philip Dennis
May 22, 2017
Verified Purchase

Great value and great price.

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