Determining Your Thermostat Type

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Uploaded by on May 29, 2009

When purchasing a new thermostat, it's important to know which type your system is made to work with. Line-voltage and Low-voltage types are the most common. How to tell by looking at the wires connected to your thermostat.

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  • Hi. I have a natural gas furnace (just installed) and my thermostat seems to keep telling the furnace to shut down before the heating cycles are finished. I am looking to replace it, but I' have no idea what kind I need. The house I'm living in came with this thermostat, but it didn't have a furnace before. Can you please help me? I think I have the milivolt, because of the gas furnace. I need to know what is compatible for a Ducane, non-direct, natural gas furnace in the basement.

  • Why do you have to stereo type italians???? 

  • Line voltage thermostats can be 120 V or 240 V. Make sure you know what voltage is going to your thermostat box. Check to see if you need a thermostat is that's 2 wire or 4 wire. If you get the wrong one it will not work right. Make sure you cut the power at the fusebox/ switchbox before touching anything especially with 240V.

  • I have 110 coming through angel hair wire ? now i am more confused should i change out the wire?

  • Excellent facts about this stuff before you upgrade you need to know.Good job, bro.

  • He does rule. Now when I have to cook angel hair pasta all I have to do is take off the thermostat and measure it to the thermostat wires to make sure I have the right kind of pasta. Seriously though this was an informative (right to the point) video. Thanks

  • Dude! You Rule!!! That was Awesome and informative, very well done my friend!

  • OK:

    Thanks for the video. It was actually really useful. I figured out that I had a low voltage wire.

    The Italian thing was way over the top though!

    Thanks!!

  • Thanks

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