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My old thermostat has no c terminal or wire

Customer Question
my old thermostat has no c terminal or wire
Submitted: 2 years ago.Category: HVAC
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Answered in 5 minutes by:
1/31/2016
HVAC Technician: airheatman, HVAC Technician replied 2 years ago
airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 9,028
Experience: Furnace, A/C and heat pump specialist.
Verified

There are a couple of solutions for this.

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HVAC Technician: airheatman, HVAC Technician replied 2 years ago

How many wires do you currently have?

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Customer reply replied 2 years ago
4
Customer reply replied 2 years ago
4 wires
HVAC Technician: airheatman, HVAC Technician replied 2 years ago

The options are as follows:

1.Run an extra wire

2.Sacrifice the FAN ON function of just being able to circulate air without heat or ac

3. Add an adapter in furnace that costs about 30 bucks.

Which of those sounds best to you?

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Customer reply replied 2 years ago
none
HVAC Technician: airheatman, HVAC Technician replied 2 years ago

Those are the only options except to get a thermostat that does not requires a C wire.

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Phil
Phil, Mechanical Engineer
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