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Location: 185 Price Parkway, Farmingdale, NY 11735
Hours: 8:00AM - 7:00PM, Mon - Fri
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Do not use this item for any installation or repair of potable water applications.
This product does not comply with the "Safe Drinking Water Act,"
which requires that products meet low-lead standards in order to be used in systems providing water for human consumption (drinking or cooking).
This item is for non-potable (non-human consumption) water applications only.
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Stages describes the number of heat or cool sources that you need to control with a single thermostat.
Voltage, or volts, is a measurement of the difference between two electric fields (in heating terms, the difference between the Earth's electrical field and the electricity running through your wires).
Amperage, or amps, refers to the amount of electricity flowing through the wires.
Wattage, or watts, is the amount of electrical power that an appliance uses or generates.
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.
(based on 46 reviews)
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!
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
Displaying reviews 1-10
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So far so good
from Cadillac, Michigan
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.
Bottom Line Yes, I would recommend this to a friend
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Great product would buy more of them.
By Uncle John
from North Branford, Ct.
Very easy installation. Replaced 2 of the old mercury Thermostats with these. Went on and worked great.
Precision digital replacement thermostat
By Wife's Tech Support
from Lexington, KY
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)
Perfect mercury replacement.
from Anchorage, AK
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.
Easy to read
from Milwaukee, WI
Easy to read the large number room temperature displayEasy to set the desired room temperature
By home owner
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)
from Woodcliff Lake,N.J.
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.
2nd time time trying this product
from Smithfield RI
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.
Bottom Line No, I would not recommend this to a friend
Easy order,FAST del.
from Plymouth, MA
Easy to order,super fast del. smooth transaction
Just what I wanted
from Williston, VT
Just what I wanted to convert our old mercury thermostats to digital!
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