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
$125.80 / box (4 units x $31.45)
In Stock! Ships in 24-48 Hours
(548 Available)
2

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
Max Temp 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 (Inches): 1-7/16"

Description for Honeywell T8775A1009

Honeywell Digital Round Thermostat with manual changeover and R,Rc,O,B,G,Y,W terminals provides single-stage temperature control for 24V gas or oil Heat Only systems. The Honeywell T8775A1009 includes a thermostat, wallplate (for wiring and mounting thermostat), mounting screws, wall anchors, and a 4074 FAB resistor.

Features:

    li>Attractive styling complements any decor
  • One-touch backlit display
  • Familiar twist-to-see operation. Available in Heat/Cool and Heat Only models
  • Includes: Wallplate, resistor assembly, mounting screws and wall anchors

Round Non-Programmable, Heat Only, Digital Thermostat

REVIEW SNAPSHOT®

by PowerReviews
HoneywellRound Non-Programmable, Heat Only, Digital Thermostat
 
4.7

(based on 46 reviews)

Ratings Distribution

  • 5 Stars

     

    (39)

  • 4 Stars

     

    (4)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (1)

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...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 46 customers

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Displaying reviews 1-10

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4.0

So far so good

By DJ

from Cadillac, Michigan

Verified Buyer

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

Works better than the old manual mercury model; maintains proper temperature. I like that it is a heat only digital thermostat.

 
5.0

Great product would buy more of them.

By Uncle John

from North Branford, Ct.

Verified Buyer

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

Very easy installation. Replaced 2 of the old mercury Thermostats with these. Went on and worked great.

 
4.0

Precision digital replacement thermostat

By Wife's Tech Support

from Lexington, KY

Verified Buyer

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

I use these "heat only" thermostats to control garages, warehouses, aircraft hangars, and out buildings where I want to use a minimum of heat to protect from freezing. With the digital settings down to 40F, this works perfectly. When buildings are occupied, easy to temporarily spin the temp up to 55, 60, or whatever is needed. Good product, easy to install, never had one fail. Affordable.

(0 of 1 customers found this review helpful)

 
5.0

Perfect mercury replacement.

By Chris

from Anchorage, AK

Verified Buyer

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

Just replaced all zone thermostats in my radiant heated home from the old round mercury units to these. They are simple, on and off, heat only, perfect for radiant floor heating. They install quickly, have no batteries to change, are easy to operate and importantly match the old round mercury footprint perfectly. No need to come behind and repaint. Backlighting comes one when unit is adjusted, which is super helpful at night.

 
5.0

Easy to read

By Niets231

from Milwaukee, WI

Verified Buyer

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

Easy to read the large number room temperature display
Easy to set the desired room temperature

 
5.0

great product

By home owner

from Milan,oh

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

very easy to install I like the lighted dial,easy to see when dark. I have two more to replace,but I'll see how this one works out first.

(1 of 1 customers found this review helpful)

 
5.0

Right On!!!!

By GLP

from Woodcliff Lake,N.J.

Verified Buyer

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

I had to replace my old themostats because they weren't working properly, and they cost me a small fortune this past winter. These are simple to operate,easy to install, and they work perfectly. I'm just sorry that I didn't install these thermostats years ago.

 
1.0

2nd time time trying this product

By Hunter

from Smithfield RI

Verified Buyer

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

This si the 2nd time trying this product. While I really like the design of this Thermostat, it does not seem to work properly. The 2nd time I tried this product it kept heating up and the light would not work on a regular basis. I have a standard hot water furnace, only 2 wires. I wish The product worked because of its easy use as I like the didital scereen. Any thoughts I would try again if the unit was defected.

 
5.0

Easy order,FAST del.

By steve

from Plymouth, MA

Verified Buyer

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

Easy to order,super fast del. smooth transaction

 
5.0

Just what I wanted

By Checlark

from Williston, VT

Verified Buyer

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

Just what I wanted to convert our old mercury thermostats to digital!

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.

7 Questions | 12 Answers
Displaying questions 1-7
  • Round Non-Programmable, Heat Only, Digital Thermostat

    Q:

    will this work with a gas multivolt fireplace insert
    Asked on 1/5/2014 by Ken from Northern Micigan

    1 answer

    • VERIFIED BUYER

      A:

      This stat is a power stealing unit and requires a 24V transformer to operate so will not work on millivolt systems a good alternative is a pro5000 Honeywell it will require you to use the battery feature but they are good accurate stats.. hope this helps..Dave

      Answered on 1/6/2014 by Anonymous
  • Round Non-Programmable, Heat Only, Digital Thermostat

    Q:

    re: Honeywell t8775a1009 (1)0636 Thermostats. After a new boiler install, the thermostat will not turn on (no digital reading). There is current flowing to wires attached to base plate. If I take the thermostat and hook it up to another base plate in my house, the thermostat works (lights up, reads temp, and sets room temp). HVAC contractor that installed boiler insists I need a new thermostat.
    Asked on 12/4/2013 by Zee from New Paltz, NY

    2 answers

    • VERIFIED BUYER

      A:

      check sub base holes where stat makes the connection. maybe something is preventing a connection. I believe you could clean it out with a paper clip. (with power off)

      Answered on 12/8/2013 by Mr.Lee from Mn
    • VERIFIED BUYER

      A:

      If you take the thermostat of the wall and jumper the two wires together
      does the boiler come on? If it doesn't then some thing isn't wired
      properly. If it does then you may need to add the resistor that came with
      the thermostat as per instructions. If this doesn't fix it then you either
      need to add a isolation relay or change models of thermostats. I would
      suggest a more knowledgeable contractor also. He should of been able to
      give you or do theses things for you.

      Answered on 12/5/2013 by Plumberman63 from Waterloo, IN
  • 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

    • 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
    • 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
    • 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
  • 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 1-7

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