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Trying to replace very old mercury thermostat with Wi Fi…

Customer Question
Trying to replace very...

Trying to replace very old mercury thermostat with Wi Fi Smart Thermostat. only two wires both black coming from wall

Contractor's Assistant: Just to clarify, do you think this is a larger HVAC problem, or something specific to the thermostat?

Thermostat

Contractor's Assistant: Do you plan on doing the work yourself?

Yes

Submitted: 11 months ago.Category: HVAC
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Answered in 1 minute by:
9/28/2017
HVAC Technician: Rick, HVAC Supervisor replied 11 months ago
Rick
Rick, HVAC Supervisor
Category: HVAC
Satisfied Customers: 24,845
Experience: 40+ yrs. experience as a licensed oil & gas technician.
Verified

Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your issue. If my initial response doesn’t answer your question then let me know and we can continue our conversation.

You need a 24 volt common (C wire). What do you have for heating equipment? brand and model please

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Phil, Mechanical Engineer
Category: HVAC
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