Round Non-Programmable, Heat Only, Digital Thermostat Zoom

Round Non-Programmable, Heat Only, Digital Thermostat

SKU:T8775A1009

Brand: Honeywell

Honeywell
Qty Price
$31.95
/ each
$121.96 / box (4 units x $30.49)
In Stock! Ships in 24-48 Hours
213 Available

Specs

Application: Heat Only
Stages:
?
1 Heat
Programmability: Non-Programmable
User Interface: Mechanical
Mount: Round
Power Method: System Heating Controls
Changeover: Manual
Temperature Range (F): 40°-90°F
Differential:
?
1°F
Operating Humidity: 5 to 90% RH
non-condensing
Voltage:
?
Low voltage
Amperage:
?
0.02-6
Wattage:
?
0.4 to 180
Wiring: R
W
Frequency: 60 Hz
Color: Premier White
Height: 3-11/16"
Width: 3-11/16"
Depth: 1-7/16"

Description for Honeywell T8775A1009

Overview

Manual changeover and R,Rc,O,B,G,Y,W terminals for 24 Vac gas or oil heat only systems. The T8775C Thermostat provides single-stage temperature control for 24V heating-cooling systems.

Features

  • Attractive styling complements any decor.
  • Large easy-to-read display.
  • The temperature reading is easily seen from a distance.
  • Backlit display.
  • On-demand backlighting makes it easy to read the display in a dark room or hallway.
  • No batteries required.
  • The temperature setting is held permanently in memory in the event of a power failure.
  • Powered through heating-cooling system controls.
  • System and Fan switches on the T8775C model.
  • Manual changeover from heat to cool on T8775C model.
  • Easy installation, set up and 5-minute compressor bypass saves time and increases installer productivity.
  • Easily configurable by the use of DIP switches.
  • F or C temperature display.
  • Selectable heating cycle rates (1, 3, 6, 9 cph) for a variety of applications.
  • Cooling cycle rate is fixed at 3 cph.
  • This is the standard compressor setting for quick installations.
  • Minimum off-time for compressors in the cooling mode.
  • Protects and extends the life of the equipment.

Round Non-Programmable, Heat Only, Digital Thermostat

REVIEW SNAPSHOT®

by PowerReviews
HoneywellRound Non-Programmable, Heat Only, Digital Thermostat
 
4.8

(based on 27 reviews)

Ratings Distribution

  • 5 Stars

     

    (24)

  • 4 Stars

     

    (2)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (0)

96%

of respondents would recommend this to a friend.

Most Liked Positive Review

 

Purchased Five Thermostats

Controls 5 zones for "Radiant Floor" heating system. User friendly, very accurate, works great.

Note: We made the mistake by tossing out the resisters, remember to instal...Read complete review

Controls 5 zones for "Radiant Floor" heating system. User friendly, very accurate, works great.

Note: We made the mistake by tossing out the resisters, remember to install all resisters. We now have to re-order them, having problems when all zones call for heat, there's too much power to all thermostats at once...they fail and malfunction. We've learned the hard way. But a good product, our mistake. :)

Like the illuminated dial...highly recommend!

VS

Most Liked Negative Review

 

Easy to Use - Inaccurate [*]

Very easy to use thermostat, especially for older people. [*] accuracy off by about four degrees. [*] I wouldn't install this anywhere where a freeze-up would be a concern. You can ...Read complete review

Very easy to use thermostat, especially for older people. [*] accuracy off by about four degrees. [*] I wouldn't install this anywhere where a freeze-up would be a concern. You can install this with your eyes closed, and the "power-stealing" design doesn't require batteries. If yours in an application where the power to the thermostat is interrupted, by a high limit control, for example, the display will go dark at those times. The memory, however isn't lost and the black out has no affect on its operation. To avoid this you can install a relay. A resistor is also provided with the thermostat that may correct this situation in some applications. The stat also goes dark if its controlled device is shunted, as in a system with an indirect heater where a limit switch may bypass the thermostat. Not a bad buy for the money, but just underatnd that what you are buying isn't traditional Honeywell quality. Quite the opposite.

Reviewed by 27 customers

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Displaying reviews 1-10

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5/11/2012
 
5.0

Excellent thermostats

By Michelle the landlord

from Brooklyn MI

Verified Buyer

Comments about Round Non-Programmable, Heat Only, Digital Thermostat:

Bought two of these for my rental houses. Didn't want anything programable. These are great. Easy and large digital numbers you can read easy. Easy install. Honeywell name brand, can't beat that. I bought same one about two months ago at a plumbing store near me; paid almost $20 more per unit!!

Bottom Line Yes, I would recommend this to a friend

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4/16/2012
 
5.0

love the product,easy to install

By Gerry

from Vankleek Hill Ontario ca

Verified Buyer

Comments about Round Non-Programmable, Heat Only, Digital Thermostat:

this thermostat should have a (c) terminal because you could install more than one on same transformer

Bottom Line Yes, I would recommend this to a friend

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2/1/2012
 
5.0

Great thermostat.

By Rocco

from Derry, NH

Verified Buyer

Comments about Round Non-Programmable, Heat Only, Digital Thermostat:

I have two of these and the light display is quite useful. Very simple to adjust temperature.

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12/26/2011
 
2.0

Easy to Use - Inaccurate [*]

By Long Beach Ed

from Long Beach, NY

Verified Buyer

Comments about Round Non-Programmable, Heat Only, Digital Thermostat:

Very easy to use thermostat, especially for older people. [*] accuracy off by about four degrees. [*] I wouldn't install this anywhere where a freeze-up would be a concern. You can install this with your eyes closed, and the "power-stealing" design doesn't require batteries. If yours in an application where the power to the thermostat is interrupted, by a high limit control, for example, the display will go dark at those times. The memory, however isn't lost and the black out has no affect on its operation. To avoid this you can install a relay. A resistor is also provided with the thermostat that may correct this situation in some applications. The stat also goes dark if its controlled device is shunted, as in a system with an indirect heater where a limit switch may bypass the thermostat. Not a bad buy for the money, but just underatnd that what you are buying isn't traditional Honeywell quality. Quite the opposite.

Bottom Line No, I would not recommend this to a friend

Was this review helpful? Yes / No

 - You may also flag this review

12/13/2011
 
5.0

easy to do

By racer

from Pennsylvania

Verified Buyer

Comments about Round Non-Programmable, Heat Only, Digital Thermostat:

Easy to install. Holds room temp better then the old mercury style

Bottom Line Yes, I would recommend this to a friend

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12/6/2011
 
5.0

Very satisfied

By Jeff G

from Wallkill,NY

Verified Buyer

Comments about Round Non-Programmable, Heat Only, Digital Thermostat:

The thermostat was very easy to install. The enclosed instructions were well written and easy to follow.

Bottom Line Yes, I would recommend this to a friend

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11/29/2011
 
5.0

great stat i have have two

By jimmy

from milwaukee, wi

Verified Buyer

Comments about Round Non-Programmable, Heat Only, Digital Thermostat:

this is the best stat on a heat only hot water application, very easy to install and use

Bottom Line Yes, I would recommend this to a friend

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5/17/2011
 
5.0

Works Great!

By Captain Hutch

from Helena, Montana

Verified Buyer

Comments about Round Non-Programmable, Heat Only, Digital Thermostat:

This product replaces a mercury-based thermostat that could not be adjusted properly to hold a steady temperature in a basement room with hydronic heat in the concrete floor. This product could be adjusted to match the needed cycle time and solved the problem.

Bottom Line Yes, I would recommend this to a friend

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4/7/2011
 
5.0

Sold many.

By Radiant Rob

from Pittsburgh PA

Verified Buyer

Comments about Round Non-Programmable, Heat Only, Digital Thermostat:

I have sold and installed hundreds.

Simple and easy.

Bottom Line Yes, I would recommend this to a friend

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3/24/2011
 
5.0

need a old school look on a modern stat

By jim v.

from clio mich

Verified Buyer

Comments about Round Non-Programmable, Heat Only, Digital Thermostat:

works great,very easy install,super acurate.

Bottom Line Yes, I would recommend this to a friend

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Displaying reviews 1-10

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Q&A: Ask the Questions, share answers

Do you have questions about this product?

get answers from real customers and in-house experts with AnswerBox.

5 Questions | 9 Answers
Displaying questions 1-5
  • Round Non-Programmable, Heat Only, Digital Thermostat

    Q:

    We have this unit and last night the temperature jumped up to 71 degrees. We had this thermostat set at 66 degrees. I checked to make sure it was still set at 66 degrees and it was, but the room temperature was at 71 degrees. The temperature has not decreased since last night even though it is set at 66 degrees. I also notice the "flame" indicator is not displaying. Somehow our electric boiler is working and pumping water through the house to keep it at 71 degrees. Any ideas???
    Asked on 1/6/2012 by Anonymous

    3 answers

    • VERIFIED BUYER

      A:

      I don't have the answer for you, but I had a similiar problem. Set temp. at 70 deg., room temp. display rose to 88 deg. The thermostat continuously called for heat even though the "flame" heat-on icon was not displayed. I called Honeywell's toll free number and was told that a professional installer would have to come and verify that the t-stat was defective before I could place a warranty claim. I replaced it with the basic round heat only model CT87 and everything works fine now. This was easier faster and cheaper than hiring a pro to tell me the t-stat was defective.

      Answered on 1/19/2012 by Doityourselfer from Coplay, PA

    • VERIFIED BUYER

      A:

      first you got to no if you got zone.is the zone valve stuck open to many question to ask you

      Answered on 4/16/2012 by Gerry from Vankleek Hill Ontario ca

    • CUSTOMER CARE

      A:

      You can disconnect the thermostat to see if the boiler is still running. If the unit is not running, you likely have a defective/broken thermostat. If the unit is still running then you probably have an issue with the boiler control.

      Answered on 1/13/2012 by PexSupply Staff from NY
  • Round Non-Programmable, Heat Only, Digital Thermostat

    Q:

    I currently have a 5 zone hydronic heating system using Automag zone valves and one circulator. All zones are controlled by Honeywell round, mercury thermostats, # T87F 1859 2. They are simply SPDT switches. I'd like to replace them with non-programmable digital thermostats, preferably Honeywell. Any suggestions?
    Asked on 11/19/2011 by Bill from Macungie, PA

    1 answer

    • CUSTOMER CARE

      A:

      Yes, you can use part T8775A1009 to replace your existing thermostats.

      Answered on 11/23/2011 by PexSupply Staff from NY
  • Round Non-Programmable, Heat Only, Digital Thermostat

    Q:

    Having a problem with this thermostat failing. The thermostat controls older zone valves. I have installed the resitor but continue to have problems.The manual thermostats work fine.
    Asked on 6/1/2011 by bud from help usa

    1 answer

    • CUSTOMER CARE

      A:

      We would recommend that you check the transformer and wiring to make sure they are wired correctly and that the transformer is sized correctly.

      Answered on 6/22/2011 by PexSupply Staff from NY
  • Round Non-Programmable, Heat Only, Digital Thermostat

    Q:

    my backlight doesn't work all the time...why is this and what do I do to fix it..?
    Asked on 1/11/2011 by dudde from delaware

    3 answers

    • CUSTOMER CARE

      A:

      Please refer to page 4 of the owner's manual for more information on using the backlit display. http://s3.pexsupply.com/manuals/1295372427495/44277_PROD_FILE.pdf

      Answered on 1/18/2011 by PexSupply Staff from NY

    • VERIFIED BUYER

      A:

      Note: the backlight works only when one turns the control ring and the light then shuts off in about five seconds. If your unit is not working like this than your thermo before was not working all the time either. Perhaps a short in the wiring triggered by someone walking over the wire area or slamming a door.

      Answered on 1/27/2011 by J H from Green Bay, WI (Go Packers!)

    • VERIFIED BUYER

      A:

      Light is only supposed to come on when you push the light button or make a tempature change. It stays on for around 20 seconds and then goes out. Sounds like yours is working correct to me.

      Answered on 3/12/2011 by Dennis from Massachusetts
  • Round Non-Programmable, Heat Only, Digital Thermostat

    Q:

    I was looking for a thermostat # T87F-2873-3-9050 and found out they are no longer made. Is this thermostat good for a replacement
    Asked on 11/24/2010 by freezing cold from Carson City, NV

    1 answer

    • CUSTOMER CARE

      A:

      Yes it can be. As long as you only need a thermostat to control heat and not air conditioning, this will work for you.

      Answered on 11/29/2010 by PexSupply Staff from NY
Displaying questions 1-5

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