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White Rodgers 1F56N-444 Mercury Free Mechanicals thermostat, 2.8 x 4.5 x 1.5 inches

  • Based on 895 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Sunday, Nov 3
Order within 46 minutes
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Features

  • Universal heat/cool thermostat
  • Built-in bimetal thermometer
  • 3-wire zone mounting plate included
  • Enclosed contacts for increased reliabity and temperature accuracy
  • 3 year warranty

Description

Same size, function as older models with updated styling Enclosed Contacts for Increased Reliability and Accuracy Replaces Hundreds of White-Rodgers and Competitive Model Installed Over the Past 50 Years White 1-Year Warranty Heat- Cool Sub base, Heat-Only or Cool-Only Sub base Single Stage Heat Pump Mercury free universal mechanical thermostat, heat/cool, heat-only, or cool-only, 3-wire zone valve, millivolt, on-off sub base and limited range stop kit included. Vertical or horizontal available. - Manufacturer: White Rodgers - Country of Manufacture: United States - Manufacturer Part Number: 1F56N-444.

Brand: White Rodgers


Model Name: Mercury Free Mechanicals


Product Dimensions: 1.5"D x 4.5"W x 2.75"H


Controller Type: Hand Control


Special Feature: Low Voltage


Controller Type: Hand Control


Special Feature: Low Voltage


Usage: Boiler, Heat Pump, Air Conditioner, Furnace


Voltage: 24 Volts


Display Type: Manual


Control Type: Dial Control


Control Method: Touch


Mounting Type: Wall Mount


Backlight: No


Color: White


Shape: Rectangular


Style: Classic


Brand: White Rodgers


Model Name: Mercury Free Mechanicals


Included Components: Thermostat, Install Guide


Model Number: 1F56N-444


Item Dimensions LxWxH: 2.75 x 4.5 x 1.5 inches


Item Weight: 0.28 Pounds


Product Dimensions: 1.5"D x 4.5"W x 2.75"H


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Nov 3

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Great thermostat
Size: 2.8 x 4.5 x 1.5 inches
So glad to find this "old school" type thermostat. The only thing that could make it better would be mercury in it. Also, the instructions were not the clearest but we figured it out. We repeatedly replace our digital thermostats...at least every year. So tired of them not functioning properly. It is amazing how efficiently and consistently our system is running now that this more basic thermostat is installed. I just ordered another for our upstairs unit. ... show more
Reviewed in the United States on May 15, 2023 by Deb B

  • I ordered wrong model for my tstat so cannot review
Size: 2.8 x 4.5 x 1.5 inches
It did come quickly and simple set up. I could not install it so I called a technician who explained that the newer tstats are not set in sequence to 30 yr old systems like mine. He said the color for the pins and the wires are off set, it is best to count the holes to get the right hole for each color. He did just that an my other tstat started working. I am keeping this one in case my other tstat ever goes out but I do not yet have any experience to say how ell it regulates. ... show more
Reviewed in the United States on July 10, 2022 by AmazonFan1950

  • Works great.
Size: 2.8 x 4.5 x 1.5 inches
Easy to install. Works great! No issues.
Reviewed in the United States on November 30, 2023 by Dana Timm

  • Great thermostat
Size: 2.8 x 4.5 x 1.5 inches
Easy to exchange the old thermostat for the new one. Easy to read numbers. Great value for my money
Reviewed in the United States on November 14, 2023 by Bonnie Enlow

  • Did not work at all.
Size: 2.8 x 4.5 x 1.5 inches
Installed this. It did not work at all. Outside of the return period so I cannot return it.
Reviewed in the United States on January 2, 2024 by I. Valdes

  • Simple and Reliable Heating and Cooling Thermostat But It May Not Last
Size: 2.8 x 4.5 x 1.5 inches
Sometimes the tried and true simple device is the best! I replaced an electronic thermostat on my heating and cooling system that was aggravating the crap out of me. This is a simple electromechanical heating and cooling thermostat - It is NOT for heat pumps though. That requires a different type thermostat. Note that although this is a simple thermostat to operate its not for idiots. If you cycle your air conditioner on then off then back on without waiting the required 3 minutes you may trip the circuit breaker on the AC unit. It's not the fault of the thermostat if you do this - it's a user fault. Every AC manufacturer warns not to do that. Because this is an electro-mechanical thermostat it must be mounted level or the temperature setting may be affected. Get out your level - don't do it by eye. The good - simple & reliable operation. It just works. When you turn on the AC it turns on without delay. When you turn on the heat it turns on without delay. Mine seems to be well calibrated for temperature. Limitations - The thermostat wiring hookup is the old style where you wrap the end of the wire around the screws that are located at seemingly random places on the thermostat base and you have to flatten the thermostat wiring once connected so the the thermostat will connect. Update - Its a little over 2 years later. I have noticed that the thermostat seems to have developed a tendency to excessively stick "on" in either heating or cooling. It sometimes noticeably over heats or over cools by several degrees unless you tap the thermostat. I believe the problem is that the contacts are deteriorating and have some tendency to stick "on". This was precisely why the original mechanical heating and cooling thermostats migrated to using a little mercury capsule with the contacts in it instead of plain mechanical contacts. But modern sensitivities are to reduce or eliminate mercury in most items, so this is what you get. Instead of removing the internal plastic cover over the contacts and cleaning the contacts which might reduce the problem for a while, I replaced this thermostat with a Honeywell non-programable electronic thermostat. The electronic thermostats do not have this wear-out mechanism. This thermostat worked perfectly for over a year, but somewhere between then and just over two years I noticed this flaw in its operation. That causes me to reduce the rating. ... show more
Reviewed in the United States on October 25, 2014 by Charles W.

  • Works goid
Size: 2.8 x 4.5 x 1.5 inches
Easy simple thermostat for a good price
Reviewed in the United States on December 24, 2023 by Rodney Horn

  • I ordered two and neither worked
Size: 2.8 x 4.5 x 1.5 inches
I wanted a simple, non programmable thermostat and thought this a good choice. Wrong! After I set the first one up and connected the wires it wouldn’t work. I called tech support and was told to return it. I ordered a replacement, and had the same problem. Again, I was told it was defective and to return it. What a hassle! I ended up buying a lux mechanical which was cheaper, easy to set up, and worked immediately. ... show more
Reviewed in the United States on October 30, 2022 by lonewolf

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