HVAC

Have HVAC questions? Ask an HVAC Expert for answers

Connect one-on-one with {0} who will answer your question

Related HVAC Questions
I am replacing thermostat TH5220D with thlermostat
I am replacing thermostat TH5220D with thlermostat RTH6580wf … read more
airheatman
airheatman
HVAC Technician
6 years college
11,707 satisfied customers
We just installed this Honeywell CT87N and can only get hot
We just installed this Honeywell CT87N and can only get hot air. We installed the wires the exact way we pulled out of old one and now nothing works...??… read more
airheatman
airheatman
HVAC Technician
6 years college
11,707 satisfied customers
I am installing a rheem heat pump. in wiring the units (thermostat-airhandler-heat
I am installing a rheem heat pump. in wiring the units (thermostat-airhandler-heat pump) the instructions say to hook contacts (B) on all units together. There is no (B) connection out of the air hand… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
14,295 satisfied customers
How to replace a 6 wire thermostat with a 5 wire Honeywell thermostat
How do replace on old 6 wire thermostat, with a Honeywell (5) wire thermostat. The extra wire is orange Honeywell Model is a Th5110D… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
14,295 satisfied customers
hi, i have a honeywell rth6450d thermostat and i can hook up
hi, i have a honeywell rth6450d thermostat and i can hook up all the wires except an orange and blue wires. i assume they are for the a/c but dont know where to put them on the thermostat… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
14,295 satisfied customers
I just installed a Honeywell RTH7400/RTH7500 Thermostat, I
I just installed a Honeywell RTH7400/RTH7500 Thermostat, I have a gas furnace and an older house with older wiring. The older thermostat had a single wire connecting it to the system. I hooked this si… read more
airheatman
airheatman
HVAC Technician
6 years college
11,707 satisfied customers
Hi. I did not label my wires when I took off my old Rheem
Hi. I did not label my wires when I took off my old Rheem thermostat and took it to Lowes. I bought a Honeywell RTH7400/RTH7500. Please let me know where wires should go. I have eight wires coming fro… read more
Matthew
Matthew
HVAC Technician
Bachelor's Degree
2,014 satisfied customers
I am trying to wire a Honeywell RTH7500 to run a Trane heat
I am trying to wire a Honeywell RTH7500 to run a Trane heat pump A/C. The wires that were hooked up to the Trane non programmable thermostat do not match up to the terminal labeling on the Honeywell. … read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,416 satisfied customers
I had a RTH5100B thermostat on a heatpump with electric back
I had a RTH5100B thermostat on a heatpump with electric back up. This thermostat would not work with the electric back up. I contacted honeywell and was informed that I need a RTH7500. The problem is … read more
Matthew
Matthew
HVAC Technician
Bachelor's Degree
2,014 satisfied customers
Honeywell Programmable thermostat model RCT8101A Will it
Honeywell Programmable thermostat model RCT8101A Will it replace a honeywell thermostat model Chronotherm Plus IV?… read more
Matthew
Matthew
HVAC Technician
Bachelor's Degree
2,014 satisfied customers
where do the color wires go on a honeywell thermostat series
where do the color wires go on a honeywell thermostat series rth7500 for a regular heat pump system… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,416 satisfied customers
Just Bought a Honeywell RCT8100 Thermostat and want to switch
Just Bought a Honeywell RCT8100 Thermostat and want to switch it over. My exisitng thermostat is a Carrier T874R1095. The old thermostat has 8 wires.. the new thermostat has slots for 5 wires. Here ar… read more
Rick Mather
Rick Mather
HVAC Technician
Vocational, Technical or Trade Scho
3,133 satisfied customers
Hello, I bought a Honeywell RTH7500D thermostast to replace
Hello, I bought a Honeywell RTH7500D thermostast to replace my Bard thermostat. Currently I use oil fired hot air as primary source of heat wired to my Bard thermostat as Emergency heat. I also have a… read more
Rick Mather
Rick Mather
HVAC Technician
Vocational, Technical or Trade Scho
3,133 satisfied customers
I just bought a programmable Honeywell thermostat (RTH7500
I just bought a programmable Honeywell thermostat (RTH7500 Series) to replace an old General Electric thermostat. I have a heat pump. All of the wire letters match up, EXCEPT for the "T" wire on the G… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
14,295 satisfied customers
We are renovating older house. Not so old propane forced air
We are renovating older house. Not so old propane forced air furnace had a 2 wire (R and W) connected to an old round non-digital honeywell thermostat. NO central AC involved. We moved put new 2-wire … read more
Rick Mather
Rick Mather
HVAC Technician
Vocational, Technical or Trade Scho
3,133 satisfied customers
I have a Honeywell CT87N4450 heating/cooling thermostat hooked
I have a Honeywell CT87N4450 heating/cooling thermostat hooked to a Lennox G40UH-48C-110-11 Furnace and can not get the Air cond. to work. The "G" green lead is connected to the blower, "W" is connect… read more
Rick Mather
Rick Mather
HVAC Technician
Vocational, Technical or Trade Scho
3,133 satisfied customers
I have a Janitrol thermostat HPT18-60 and would like to replace
I have a Janitrol thermostat HPT18-60 and would like to replace it with a honeywell RTH230B programable thermostat. the instructions for the honeywell do not address or match up to the wiring in my ol… read more
Rick Mather
Rick Mather
HVAC Technician
Vocational, Technical or Trade Scho
3,133 satisfied customers
I am replacing my Honeywell T841 with a Honeywell RTH7500.
I am replacing my Honeywell T841 with a Honeywell RTH7500. My existing wires are G,Y,B,R,W2, And X. Where do my W2 and X wires go on the RTH7500?… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
14,295 satisfied customers
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.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

You did one super job of explaining to me everything there is to know about this fridge. I'm looking forward to asking you questions in the future.

JimmyBagley, IA

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

< Previous | Next >

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.

< Previous | Next >

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.

Show MoreShow Less

Ask Your Question

x