Honeywell 7 in. H Heat Only Thermostat(CT87K1004/E1)

Item no: 4212403 | 085267263672
300  Estimated 

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  • Product Type: Heat Only Thermostat
  • Voltage Rating: 15 volts
  • Control Type: Manual
  • Shape: Round
  • Vacation Mode: No
  • Batteries Included: No
  • Built In WiFi: No
  • Baseboard Heater Thermostat: No

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What people are saying

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by PowerReviews
Honeywell Round Heat Only Thermostat (CT87K1004/E1)

(based on 5 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars




of respondents would recommend this to a friend.

Reviewed by 5 customers

Displaying reviews 1-5

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I have installed several of these

By Duane

from Conneaut Lake , Pennsylvania

About Me Midrange Shopper


  • Attractive Design
  • Durable
  • Easy To Assemble


    Best Uses

      Comments about Honeywell Round Heat Only Thermostat (CT87K1004/E1):

      If these are not installed properly they will not work. If the battery goes bad these will not work. Yes they take a battery, those of you throwing them away after a couple years didn't read the Manual. "This thermostat contains a lithium battery ...". This is the next best thermostat on the market compared to the Honeywell digital power stealing model.

      • I Am A:
      • Single Male

      (1 of 1 customers found this review helpful)


      Quit working in less than 2 years

      By Paul

      from Hamilton MT

      Verified Reviewer

      Comments about Honeywell Round Heat Only Thermostat (CT87K1004/E1):

      Unit failed after 20 months use--replaced with an old mercury thermostat I had on hand. Not a reliable product.

      (6 of 6 customers found this review helpful)


      Don't buy this one!

      By Bob

      from Chicago

      About Me Handyman

      Comments about Honeywell Round Heat Only Thermostat (CT87K1004/E1):

      Tried 3 of these --- none worked. Contacted Honeywell help line. They said I must be getting thermostats from a "bad batch" - told me to go to a different store for one. I did get a different one - a different brand - & it worked immediately!!!! So much for Honeywell quality!

      (4 of 4 customers found this review helpful)


      Poor controlliing

      By denny

      from rose city, MI

      About Me Homeowner, Motel owneroperator


      • Easy To Adjust
      • Easy To Install
      • Intuitive Controls
      • Look of old mercury stats


      • Some quit after 1-2yr use
      • Temp bandwidth 12 degrees
      • Temperature Doesn't Hold

      Best Uses

        Comments about Honeywell Round Heat Only Thermostat (CT87K1004/E1):

        Honeywell's old "heat only" mercury tstats tracked better and lasted for decades. This electronic replacement version is pricey and doesn't perform or last anywhere as well. I have purchased several of these units and some track well and some don't. Some have quit working after 2 years of use. Honeywell is not that repair or replacement friendly either.

        (5 of 6 customers found this review helpful)


        works but not accurately

        By Jerry

        from Hamilton, MT

        About Me Homeowner

        Verified Buyer


        • Easy To Adjust
        • Easy To Install
        • Precise Controls


        • Room temp dial inaccurate

        Best Uses

          Comments about Honeywell Round Heat Only Thermostat (CT87K1004/E1):

          The thermostat was installed to control a pellet stove supplying heat to the second story of a cabin. It works but the lower dial that tracks room temperature reads low. I checked it against a separate thermometer.

          Displaying reviews 1-5

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