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Daniel Plourde
Daniel Plourde, HVAC Technician
Category: HVAC
Satisfied Customers: 323
Experience:  hvac technichian at performance plumbing and heating
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Have Lennox mercury 4 wire thermostat not working well. Is

Customer Question

Have Lennox mercury 4 wire thermostat not working well. Is there a place where thermostat could be reconditioned. If not, new or used, what would nbe best replacement? Thanks
JA: Just to clarify, do you think this is a larger HVAC problem, or something specific to the thermostat?
Customer: Think it problem with thermostat. furnace still runs, but does not maintain constant temperature,
JA: Do you plan on doing the work yourself?
Customer: No. Can get professional people.
JA: Anything else we should know to help you best?
Customer: Realize is old thermostat, but really like its dual temperature control. Can it be reconditioned? If need to replace, what would be best one.?.
Submitted: 9 months ago.
Category: HVAC
Expert:  Daniel Plourde replied 9 months ago.

hi i am dan i can help you with this. i am sorry if you have been waiting a while. i just logged on and saw your question now. usually with those thermostats dust builds up on the inside and affects them like that. if you would like to keep that thermostat then try blowing out the dust in it by removing the circle cover and use a dusting can to blow it out and clean it. if you would still like to replace it i would recommend going with a digital thermostat. any standard conventional thermostat will work. i would just recommend staying away from honeywell thermostats. if you have any more questions about this or if this answers your question please let me know

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