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I'm trying to replace a luxpro thermostat with a nest. The
I'm trying to replace a luxpro thermostat with a nest. The Luxpro has more wires than the nest. It has a black E and blue C wire … read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,634 satisfied customers
Have a three zone system with an older Honeywell TZ-3
Have a three zone system with an older Honeywell TZ-3 controller. Want to replace two of three older Honeywell non-wifi, non-programmable thermostats with Nest-E. Current wires to thermostats are WRYG… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
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I am installing a nest thermostat. it says the RH has no
i am installing a nest thermostat. it says the RH has no power. when i put back my old thermostat it works. … read more
airheatman
airheatman
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Billy, I just read your dissrtation about Payne Led Code 24
Hello Billy,I just read your dissrtation about Payne Led Code 24 resolutions. Greatly appreciated.I believe i was the numbskull that blew the purple fuse when trying to install a nest e thermostat.Whi… read more
BillyHvac
BillyHvac
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I recently moved, and have been trying to modernize a bit. I
Hello, I recently moved, and have been trying to modernize a bit. I didn't really think much of thermostats until I saw a NEST installed at an office I was in. I got a bit confused when looking into t… read more
Regan Land
Regan Land
General Manager
Vocational, Technical or Trade Scho
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I'm trying to install a best 1st model to a dual system and
I'm trying to install a best 1st model to a dual system and the previous thermostat had the white into and a jumper to E. My nest has a w1 but no E. Only has aux/w2. How do I wire that?… read more
Phil
Phil
Mechanical Engineer
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I would like to have zone cooling and heating with an older
I would like to have zone cooling and heating with an older unit 24abr336a . I have a Honeywell electronic damper system on there now but I don't think the thermostats are compatiable any ideas … read more
Michael Ferryman
Michael Ferryman
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I think I may have a bad nest out of the box. They are
I think I may have a bad nest out of the box. They are sending me a new one after going through hours of support. But maybe you guys will know something more. … read more
gotoman for ac
gotoman for ac
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Second opinion] Trying to switch from a Ruud T874R
Second opinion] Trying to switch from a Ruud T874R thermostat on a Q674L base to a Nest thermostat. Have a heat pump outside + electric furnace inside. Wires on the Ruud are white to W2 terminal, yell… read more
gotoman for ac
gotoman for ac
HVAC Technician
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I'm attempting to hook up a 2nd Generation nest to a system
Hello Douglas, I'm attempting to hook up a 2nd Generation nest to a system that has an Electric Heat pump and Emergency electric heat. The original Thermostat was a Honeywell Model 672444. It was wire… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,634 satisfied customers
I need a HVAC pro, one who is familiar with installing Nest
Hello, I need a HVAC pro, one who is familiar with installing Nest thermostats to confirm my wiring. … read more
airheatman
airheatman
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I have a Totaline P474-0100 that was removed to install a
I have a Totaline P474-0100 that was removed to install a Google Nest which isn't working. I have a Rheem heatpump system and it's not cooling so I want to put the Totaline back on line. Do you have t… read more
Brian HVAC Guy
Brian HVAC Guy
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I have questions about my Goodman air con unit and my stiebel
I have questions about my Goodman air con unit and my stiebel eltron accelera 300 water heater… read more
Phil
Phil
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I just installed a nest thermostat and when nI turn the
I just installed a nest thermostat and when nI turn the power back on to the system there is a loud buzzing coming from the unit and the flashing lights indicate the primary/secondary limit switch is … read more
Appliance Guru
Appliance Guru
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Trying to update thermostat Heat Pump model FA4ANF030.
Trying to update thermostat for Carrier Heat Pump model FA4ANF030. Original thermostat Carrier HH07AT171 with HH93AZ175A base. System shows as 2-heat 1-cool. Original wires are Y W2 G R C O. New therm… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
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Ac unit fan is blowing cold air outside. Need someone to look
ac unit fan is blowing cold air outside. Need someone to look at old wiring and tell me if my nest is wired correctly.… read more
Brian HVAC Guy
Brian HVAC Guy
HVAC Technician
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I have a two wire analog Honeywell thermostat. I want to replace
I have a two wire analog Honeywell thermostat. I want to replace it with e Nest. The wires on the old thermostat aren't labelled. How do I know which wire corresponds to which connector on the Nest?… read more
Rick
Rick
Supervisor
24,917 satisfied customers
We just bought a 12 year old home in San Antonio and the upstairs
We just bought a 12 year old home in San Antonio and the upstairs has a Hunter 44760 a/c thermostat. We cannot figure out how to re-program the stupid thing and it is 89 degrees upstairs. How can we j… read more
Rick Mather
Rick Mather
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Meet the Experts:

Phil

Phil

Mechanical Engineer

7,634 satisfied customers

Retired HVAC/ Electrical & Boiler contractor. Industrial

Rick Mather

Rick Mather

HVAC Technician

3,133 satisfied customers

35 years experience, HVAC

Matthew

Matthew

HVAC Technician

2,014 satisfied customers

14 years experience in the HVAC field of service, installation, Manual J & D calculations

Brian HVAC Guy

Brian HVAC Guy

HVAC Technician

1,024 satisfied customers

I have been an HVAC/R mechanic/technician for 30+ years.

Kenton Guidry

Kenton Guidry

HVAC Technician

963 satisfied customers

12 years install/service experience.

Rick Ridley

Rick Ridley

UK Heating Engineer

871 satisfied customers

Retired But have had 30 years on the tools, Ex CORGI

Tom

Tom

HVAC Technician

770 satisfied customers

16+yrs HVAC/R service. Residential Commerical Industrial

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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