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The heat registers in the basement would not turn off; heat was 82 degrees all the time


1)      Broken thermostat

2)      Old thermostat


1) Change out to a digital, programmable thermostat

Hints and tips:

1) Always make sure power is turned off to the furnace before replacing a thermostat

2)  There can be up to 12 small wires that go to the thermostat, and if they are placed in the wrong areas you can burn out your new thermostat before testing if it works.  There are wiring diagrams all over the internet, as I find the ones that come with the thermostat are confusing.

3)  In older homes, you may only see a black and a white wire coming out of the wall.  Most new programmable thermostats will work in this case

4) If the thermostat stops working and the heat will not shut off, use valves in a water heat system to turn off registers, or cut the power to the furnace.

5)  If your old thermostat contains a mercury switch, it is vital that it is disposed of properly. DO NOT THROW AN OLD MERCURY THERMOSTAT IN THE TRASH!

Go to to find a drop-off or recycling center near you.


If you have issues like the one described above, or have other heating issues in your home, click the contact” tab to the right and let Screw Loose? LLC take care of the rest.


Thanks for your time, I hope this helps………………………………..

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