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Can u assist me with changing my thermostat i have a lennox
can u assist me with changing my thermostat i have a lennox i-confort switching to Honeywell wifi9000 … read more
Phil
Phil
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Degree, Mech Engr Technology
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airheatman
airheatman
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I have a Lennox 21j7101 tstat. I am replacing with a Pro1
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BillyHvac
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Lennox g5ouh 4 years old. Whe t stat is off diagnostic lights
Lennox g5ouh 4 years old. Whe t stat is off diagnostic lights are in normal mode,when t stat to heat mode. Diagnostic lights both go off,,furnace will not light..fan blower works when switched to on..… read more
BillyHvac
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I have bought a Honeywell T Stat....RTH221B.....inst...say
I have bought a Honeywell T Stat....RTH221B.....inst...say DONOT use if u have R,RC,RH, 4 and V wireing? I have .....Green wire to G....Red wire to RC...With Jumper to RH....Yellow to Y....And a BLUE … read more
M Oglesby
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Vocational, Technical or Trade Scho
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gotoman for ac
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Hi, I have a t636 roomstat and wish to change it to a dt90
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MagiicAir
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I am replacing a lennox 51M33 t-stat with a honeywell rth7600 My
I am replacing a lennox 51M33 t-stat with a honeywell rth7600: My current t-stat is connected as follows (O) ORANGE - Reversing valve, cool active (R) RED - 24VAC (G) GREEN - Fan Control (Y1) YELLOW -… read more
Tim H.
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i have a White-Rogers thermostat connected to myhame heating
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Richard
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I replaced a Lennox Model 51M33 with a honeywell RTH7500. The
I replaced a Lennox Model 51M33 with a honeywell RTH7500. The color code on the old one was Orange-O Green-G red-R blue-C White-W1 Black E Yellow- Y On the RTH7500 I placed them on the following Black… read more
steve
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I have an older mercury Honeywell Thermostat with wires to
I have an older mercury Honeywell Thermostat with wires to letters G, R, P, and O. I purchased a CT87N round thermostat (only round model they had) at Home Depot. There does not seem to be matching co… read more
Matthew
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I purchased a honeywell model rth7400 programmable thermostat.
I purchased a honeywell model rth7400 programmable thermostat. I am wanting to replace a lennox /honeywell round thermostat that has to be manually switched from heat to cool. Not sure where model num… read more
Mark Henley
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I have just bought a Honeywell RTH7600 to replace my old Honeywell
I have just bought a Honeywell RTH7600 to replace my old Honeywell 9948 (T860102019). The old thermostat used five wires (red, yellow,green,white and light blue). The new RTH7600 only speaks of four w… read more
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Hi, I have a carrier thermostat TSTATCCNACO1-C and would like
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BARRY
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Hello, I am trying to replace weathertron BAYSTA T240 thermostat
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currently i have a trane heatpump with an american standard
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We just relocated from M/SP MN. to Corpus Christi. I switched
We just relocated from M/SP MN. to Corpus Christi. I switched from a Carrier T-stat to a Honeywell RTH 7500 so I can program time & days better. The carrier T-stat has 6 posts. Here are the posts Lett… read more
Josh
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I am trying to replace a Trane Weathertorn 2 stage heatpump
I am trying to replace a Trane Weathertorn 2 stage heatpump T-stat with a Honeywell RTH7500 T-stat. As I am sure you are aware there are wiring differences.… read more
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Meet the Experts:

Phil

Phil

Mechanical Engineer

8,427 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

1,029 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.

Tom

Tom

HVAC Technician

770 satisfied customers

16+yrs HVAC/R service. Residential Commerical Industrial

A-1 Tech

A-1 Tech

Service Manager

526 satisfied customers

I have been in the HVAC business for over 40 years.

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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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