0085267263696

Honeywell

Model # CT87N

Internet # 202219050

Store SKU # 375586

Round Heat/Cool Thermostat

$39.88 /each

Frequently Bought Together

Product Overview

The Honeywell Round Heat/Cool Thermostat offers time-tested, precise temperature control in a simple, mercury-free thermostat. It has non-programmable mechanical operation in a traditional circular housing.

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

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents.  Download a free copy from the Adobe Web site.

Specifications

Dimensions

Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 

Details

Color Family 
Whites 
Control Type 
Dial 
Number of HVAC Zones 
Operation Type 
Mechanical 
Returnable 
90-Day 
Shape 
Circular 
Thermostat Type 
Heating and Cooling 
Voltage (volts) 
24 

Warranty / Certifications

Certifications and Listings 
No Certifications or Listings 
ENERGY STAR Certified 
No 
Manufacturer Warranty 
1 year limited warranty 

More Products With These Features

Search

Customer Questions & Answers

16 Questions35 Answers

Customer Questions & Answers

Round Heat/Cool Thermostat
Round Heat/Cool Thermostat

Ask your questions. Share your answers.

 
 
Clear Search Term
 
 
Sort By:
This question is from Round Heat/Cool Thermostat
 
6 answers

Can I install it myself?

This question is from Round Heat/Cool Thermostat
Asked by
Julie
Waukesha WI
September 26, 2013
or do I need a hvac person to do it
0points
0out of 0found this question helpful.
Was this helpful?helpful0unhelpful0

Answers (6)

Asked by
Watertown, MA
Read all my Q&A
Home Improvement Profile: DIYer
November 29, 2014
Answer: 
Simple to follow directions and very straight forward. Honestly, I am a dyslexic and it only took me 15 minutes to install it.
+1point
2out of 3found this answer helpful.
Was this helpful?helpful2unhelpful1

Asked by
Read all my Q&A
October 7, 2014
Answer: 
Yes, just remember the order of the colors and turn off the power for the air handler.
Red is power
Blue is not need
Yellow is the condenser
Green is the fan
White is heat
+5points
6out of 7found this answer helpful.
Was this helpful?helpful6unhelpful1

September 30, 2013
Answer: 
The Honeywell CT87N is intended to be installed by the consumer. Wiring is usually straight forward and involves tagging the wires, as you remove them from your existing thermostat, so they get attached to the proper terminals on the CT87N.
The installation guide does provide complete instructions on the installation process, but, to get specific questions answered you can always call the Honeywell Read More
The Honeywell CT87N is intended to be installed by the consumer. Wiring is usually straight forward and involves tagging the wires, as you remove them from your existing thermostat, so they get attached to the proper terminals on the CT87N.
The installation guide does provide complete instructions on the installation process, but, to get specific questions answered you can always call the Honeywell Consumer Technical Support Line at 1-800-468-1502.
Sincerely,
Honeywell Customer Care Read Less
+4points
5out of 6found this answer helpful.
Was this helpful?helpful5unhelpful1

Asked by
Klamath Falls, OR, USA
Read all my Q&A
September 26, 2013
Answer: 
It only has a few color coded wires to hook up and screw it to the wall. So if you already have the colored wires coming out of your wall or an old thermostat, I would bet you could install it with in a sort time.
+2points
2out of 2found this answer helpful.
Was this helpful?helpful2unhelpful0

Asked by
Kansas
Read all my Q&A
September 26, 2013
Answer: 
Yes, you should be able to without any problem if you are replacing a older similar one with the same type wiring.
+1point
1out of 1found this answer helpful.
Was this helpful?helpful1unhelpful0

Asked by
Texas, USA
Read all my Q&A
September 26, 2013
Answer: 
Yes, you can install it yourself so long as you have proper training and/or experience in electrical theory and follow the wiring diagram specifications as laid out in the book that came with it.
NOTE: if you were to remove the original thermostat without turning things off at the breaker panel, you could be potentially handling a live 220V line.
In my area, there are some professionals who don't Read More
Yes, you can install it yourself so long as you have proper training and/or experience in electrical theory and follow the wiring diagram specifications as laid out in the book that came with it.
NOTE: if you were to remove the original thermostat without turning things off at the breaker panel, you could be potentially handling a live 220V line.
In my area, there are some professionals who don't charge as much as usual and will instead supervise you and direct your actions as needed. (Basically, if they have to touch it, they charge more.)
ALWAYS, If you have any questions or any doubts, get a licensed professional to help. Read Less
-3points
0out of 3found this answer helpful.
Was this helpful?helpful0unhelpful3
This question is from Round Heat/Cool Thermostat
 
6 answers

I bought a ct87n thermostat and can't get it to work

This question is from Round Heat/Cool Thermostat
Asked by
Randy
Bozeman
January 13, 2013
the manuel didn't say how to hook this up if you only have 2 wires so I went to the on line manuel. It said to hook the wires to R & W . It still doesn't work. I got a second thermostat thinking the first one was defective but it still doesn't work. I am using this on a gas fireplace . How can I make this work ?
0points
0out of 0found this question helpful.
Was this helpful?helpful0unhelpful0

Answers (6)

Asked by
Lynchburg, VA
Read all my Q&A
February 13, 2015
Answer: 
Do you have 24 volts coming from the fireplace? I have never seen a 1 stage thermostat used with a gas fireplace.
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0

Asked by
Texas, USA
Read all my Q&A
August 28, 2013
Answer: 
Based on your description, I'm pretty sure that this is NOT the product which you need. While this can support a gas-based system, it is intended to handle a typical 220-240V system. If you only have a red and a white, that sounds more like it's intended for a switch or rheostat of some kind. I would highly recommend you hire an electrician to be certain of what you need, if at least for a consultation. Read More
Based on your description, I'm pretty sure that this is NOT the product which you need. While this can support a gas-based system, it is intended to handle a typical 220-240V system. If you only have a red and a white, that sounds more like it's intended for a switch or rheostat of some kind. I would highly recommend you hire an electrician to be certain of what you need, if at least for a consultation. When you are working with electricity and gas in combination, it's best not to take any chances. Read Less
+1point
1out of 1found this answer helpful.
Was this helpful?helpful1unhelpful0

Asked by
Klamath Falls, OR, USA
Read all my Q&A
June 27, 2013
Answer: 
You need to get one for heater only (CT87K).
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0

Asked by
Maryland
Read all my Q&A
January 15, 2013
Answer: 
You have the wrong thermostat for a two wire heating appliance. Take your model CT87N back and exchange it for the model CT87K which is a similar thermostat in looks and operation except that it is designed for a two wire appliance like your fireplace burner (and the good news is that you will get a few dollars back during the exchange). Good luck.
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0

January 14, 2013
Answer: 
Hi Randy,
The CT87N thermostat is rated for 24Vac heating and cooling systems. We recommend that you verify the voltage, which can be located on your old themostat or existing equipment manuals. If you find that your system is milivolt (750 MV) We recommend the RTH110 series of thermostats, as this thermostat works on 24 volt or 750 mV systems.
Thanks,
Honeywell Support Team.
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0

Asked by
Kansas
Read all my Q&A
January 14, 2013
Answer: 
You may have to supply an external voltage to it since you are not using it in a standard furnace mode. Power it with a transformer with the right voltage and see if it works for you then.
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0
This question is from Round Heat/Cool Thermostat
 
5 answers

Is there a way to calibrate the temperature setting indicator?

This question is from Round Heat/Cool Thermostat
Asked by
Read all my Q&A
October 23, 2013
I have leveled the unit on the wall. The room temp indicator is about ten degrees lower than the the heat setting I use to turn the furnace on.
0points
0out of 0found this question helpful.
Was this helpful?helpful0unhelpful0

Answers (5)

Asked by
Lynchburg, VA
Read all my Q&A
February 13, 2015
Answer: 
No. Sorry. Call Honeywell. They know there is a problem with this product.
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0

Asked by
Lynchburg, VA
Read all my Q&A
February 13, 2015
Answer: 
Sorry, no. This is a solid state device and needs no leveling. There are scores of complaints on the Internet about this model. Maybe a call to Honeywell customer service would help, but I would demand a refund and get a basic digital read-out, non-programmable unit for simplicity.
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0

Asked by
Jacksonvillle,NC
Read all my Q&A
December 18, 2014
Answer: 
yes
-1point
0out of 1found this answer helpful.
Was this helpful?helpful0unhelpful1

Asked by
Read all my Q&A
October 7, 2014
Answer: 
No you cant calibrate it
-1point
0out of 1found this answer helpful.
Was this helpful?helpful0unhelpful1

November 15, 2013
Answer: 
Make sure the hole in the wall where the wires are coming out of the wall is plugged with insulation. A draft in the wall can have a direct affect on the thermostat. If that doesn't take care of your issue, please reach our Honeywell Tech Support group at 800-468-1502 for further troubleshooting of this thermostat.
Thanks,
Honeywell Support Team
-2points
0out of 2found this answer helpful.
Was this helpful?helpful0unhelpful2
This question is from Round Heat/Cool Thermostat
 
4 answers

does this run in electric?

This question is from Round Heat/Cool Thermostat
Asked by
sylvia
massachusetts
August 14, 2013
I had an old mercury one and the gas co. took it out and replaces it with a digital one and when my lights go out I don't have heat. I want one that works without elect. So I can be warm even with no lights. Help please. I have had this a few years and I live on a slab so it gets cold fast and I worry about the pipes freezing in the winter without heat.
0points
0out of 0found this question helpful.
Was this helpful?helpful0unhelpful0

Answers (4)

Asked by
Lynchburg, VA
Read all my Q&A
February 13, 2015
Answer: 
Yes...even the old one worked on electric...24V is standard. If your lights go out that means there is no electricity going to your gas furnace...so the blower fan in the furnace will not work in any event. A small propane gas stove for emergency use may help.
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0

Asked by
Texas, USA
Read all my Q&A
August 28, 2013
Answer: 
If yours is like mine: no. When I was installing mine, I saw that it can control a gas based system, but it still uses electrical poser to send the signal to the system to run. If your power goes out then this will probably do the same thing.
As for getting a new mercury based 'stat, you should be able to get a licensed plumber / gas tech who can find what you want and install it. But before you do Read More
If yours is like mine: no. When I was installing mine, I saw that it can control a gas based system, but it still uses electrical poser to send the signal to the system to run. If your power goes out then this will probably do the same thing.
As for getting a new mercury based 'stat, you should be able to get a licensed plumber / gas tech who can find what you want and install it. But before you do that, YOU need to check with the gas company as see if it's acceptable to do so. They might be using it as a monitoring device (similar to some small gas co-ops here in Texas that use them since they can't monitor the pipes directly,) or some other unspoken reason that they have. Either way, asking the provider first is always a good way to stay out of legal issues. Read Less
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0

August 15, 2013
Answer: 
The thermostat you reference in your question is a Honeywell CT87N. But, it does not have a digital display. It has a minimum voltage requirement of approximately 20 volts AC with a maximum of 30 volts AC, at 60 HZ. It is not battery powered.
Many of the older thermostats with mercury switches had a lower minimum rating of 15 volts AC, with the same maximum rating of 30 volts AC. Even though they had a Read More
The thermostat you reference in your question is a Honeywell CT87N. But, it does not have a digital display. It has a minimum voltage requirement of approximately 20 volts AC with a maximum of 30 volts AC, at 60 HZ. It is not battery powered.
Many of the older thermostats with mercury switches had a lower minimum rating of 15 volts AC, with the same maximum rating of 30 volts AC. Even though they had a lower minimum, they still required electricity to operate.
With either thermostat, if there is a power outage and your system has no power, the thermostat would not be able to bring it on. Even if there is a battery powered thermostat controlling your system, all the batteries do is power the microprocessor. The thermostat still would need to see a minimum amount of voltage from your system to properly control it.
If the current thermostat was supplied by your local gas company, you many want to contact them regarding the questions and concerns yyou have described here. If you would like to speak with somone Honeywell for more information, please contact the Honeywell Consumer Support Line at 1-800-468-1504. Read Less
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0

Asked by
Klamath Falls, OR, USA
Read all my Q&A
August 15, 2013
Answer: 
Yes it's battery operated. But is there anything electric in your heating system, like a fan/blower or pump, etc. that will stop with no electric?
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0
2 »
  • 2016-07-22 T15:32:05.452-05:00
  • bvseo_lps, prod_bvqa, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasquestionsanswers
  • loc_en_US, sid_202219050, prod, sort_default
2 »
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 91ms
  • QUESTIONS, PRODUCT

Customer Reviews

Rated 4.1 out of 5 by 50 reviewers.
Rated 1.0 out of 5.0 by Bought 4 defective thermostats before I got a working one. Bought 4 before I got one that worked. Paid HVAC Co. to tell me it was the thermostat and not the furnace. He replaced with digital thermostat. May 11, 2016
Rated 5.0 out of 5.0 by Feel the heat? 4 minutes to install. Works great! Will most likely last as long as Honeywell I replaced. Which was 38 years old with the old Mercury switch! March 15, 2016
Rated 4.0 out of 5.0 by Easy Install You basic easy to install item. It was packaged well and work as it should. March 1, 2016
Rated 5.0 out of 5.0 by good purchase Exactly what I was looking for, easy to install looks good March 1, 2016
Rated 4.0 out of 5.0 by Reliable Thermostat This is a good, reliable thermostat for basic heating and cooling systems but is not cutting edge or revolutionary. February 17, 2016
Rated 5.0 out of 5.0 by Better than Digital Originally had this in home. Nephew suggested a digital. To upgrade to new styles. Couldn't use it. And was constantly causing no heat or air. So my sister said go back to original style and she installed it. Found out that the digital was miss wired for our gas furnace . January 6, 2016
Rated 5.0 out of 5.0 by Just what the Doctor ordered... The unit is simple in design and function, has easy to understand instructions on setting it up, and works flawlessly with a mechanical simplicity that borders on genius. My older thermostat, a fancy computerized model that allowed for network connectivity and web-based controls, lost it's mind - literally. Suddenly my house was getting hot - fast, yet the 'stat said all was well. Go online and it said differently and it refused to let me change it. After many hours of Frankenstein's monster tormenting us, I gave in and went low-tech. My only CON on this unit is it's small size when compared to the larger more elaborate thermostats: wiring with older, thicker wiring like my house means you have to take extra care not to cross anything when installing it. Other than that, I love the simple use and ease of install. I'm never going back to the high-tech stuff like that again. August 28, 2013
Rated 4.0 out of 5.0 by good More time to connect, instructions could be better, but does the job December 17, 2015
  • 2016-07-22 T15:58:52.702-05:00
  • bvseo_lps, prod_bvrr, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasreviews, tv_50, tr_50
  • loc_en_US, sid_202219050, prod, sort_default
2 3 >>
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 36ms
  • REVIEWS, PRODUCT