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 have a carrier thermostat with only two wire RED hook up
Hi, I have a carrier thermostat with only two wire RED hook up to (V+) & Green (VG) hook up to a Rheem furnace, I also have a carrier override control box, supplied and installed by my power company. … read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
8,339 satisfied customers
I have a in floor heating boiler dual zone (in floor
I have a in floor heating boiler dual zone (in floor downstairs and radiators upstairs), in addition to forced air heating and coolant. Im replacing honeywell wifi thermostats to the old dial mercury … read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,394 satisfied customers
I just installed a honeywell wifi thermostat and got the
i just installed a honeywell wifi thermostat and got the cooling system to work but whenever i tried to run the heater the system would start for a few seconds then stop. the system would shut off als… read more
Brian HVAC Guy
Brian HVAC Guy
HVAC Technician
High School
1,029 satisfied customers
How are you doing? I tried to install a Honeywell digital
Hi, how are you doing? I tried to install a Honeywell digital wifi thermostat in my house, replacing a Braeburn thermostat and once I turned the power on, neither thermostat powered up … read more
Brian HVAC Guy
Brian HVAC Guy
HVAC Technician
High School
1,029 satisfied customers
Installing a new thermostat but I have a wire that was
Installing a new thermostat but I have a wire that was attached to letter O on the old thermostat and no where to attach it to the new thermostat.… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
9,344 satisfied customers
I am replacing an older honeywell thermostat with the TH9320WF
I am replacing an older honeywell thermostat with the TH9320WF . I have a white wire on the C terminal and a blue, green and red . Will I be able to install this unit with four wires ?… read more
Gaztech
Gaztech
Technician
Vocational, Technical or Trade School
1,480 satisfied customers
I'm trying to install a Honeywell RTH9580 Wifi thermostat
I'm trying to install a Honeywell RTH9580 Wifi thermostat with a Bryant Plus 80 furnace … read more
Rick
Rick
Supervisor
27,313 satisfied customers
Replaced my old round thermostat with a Honeywell RTH 9580
Hi Replaced my old round thermostat with a Honeywell RTH 9580 wf. Connected the wires to the same similar terminals as the old. Worked yesterday. Set up a schedule. Came in this morning and the fan wo… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
9,344 satisfied customers
Have a Honeywell wifi thermostat 't have a c wire on old
have a Honeywell wifi thermostat don't have a c wire on old thermostat , have a L8148J aquastat with no c terminal , what terminals do I use on old aquastat to the c on new thermostat… read more
Rick
Rick
Supervisor
27,313 satisfied customers
I am trying to install a new smart thermostat but can't get
i am trying to install a new smart thermostat but can't get it working. My old thermostat didn't use a "C" wire, the new one does. There is an unused blue wire tucked behind the current install which … read more
joeydelia
joeydelia
HVAC-R Tech supermarket refrigeration
182 satisfied customers
I need help installing a new Honeywell WiFi thermostat. I'm stuck on the wiring. The
I need help installing a new Honeywell WiFi thermostat. I'm stuck on the wiring. The old thermostat had G, Y1, R, and two more wires wrapped together and set in the W1 terminal. Those wires are blue a… read more
Appliance Guru
Appliance Guru
20,984 satisfied customers
Brian, I have installed a new furnace and air-conditioner
Hi Brian, I have installed a new furnace and air-conditioner in my house and have everything wired. The problems is I only have a red and white wire going to my thermostat (older home). can I just run… read more
Brian HVAC Guy
Brian HVAC Guy
HVAC Technician
High School
1,029 satisfied customers
i am trying to wire a honeywell smart thermostat. my old thermostat
i am trying to wire a honeywell smart thermostat. my old thermostat has 4 wires (no c wire) it also has 2 wires running to a humidifier controller. how should i proceed… read more
Tim H.
Tim H.
Lead building engineer
Vocational, Technical or Trade Scho
3,962 satisfied customers
Greetings - I am attempting to replace my thermostats(Chromotherm
Greetings - I am attempting to replace my thermostats(Chromotherm III) primary and secondary with new WIFI Honeywell thermostats. The wires did not match up on the primary(R, B, Y G, W with another wi… read more
BillyHvac
BillyHvac
Journeyman HVAC Tech
State Licensed Mechanical Contractor
23,450 satisfied customers
I have a Payne PG9MMA036080 (propane) heater and am trying
I have a Payne PG9MMA036080 (propane) heater and am trying to install a Honeywell RTH6580WF wifi thermostat. The existing setup has green, red and white wires running from the terminal block on the he… read more
Comfort Specialist
Comfort Specialist
Licensee, Designer & Estimator
Vocational, Technical or Trade School
1,369 satisfied customers
purchased a Honeywell wifi thermostat model rth8580wf have
purchased a Honeywell wifi thermostat model rth8580wf have only 4 wires to old thermostat I can run a5th wir no problem. after looking at terminal board in furnace I see the 4 wires from the thrmstat … read more
Tim H.
Tim H.
Lead building engineer
Vocational, Technical or Trade Scho
3,962 satisfied customers
I have an old 2 wire thermostat with only R and W - it works
I have an old 2 wire thermostat with only R and W - it works with a Honeywell digital thermostat. Now I want to upgrade to a honeywell wireless thermostat. Can I simply connect the R and W wires and b… read more
Bill P.
Bill P.
Installer/ Troubleshooter/Technician
338 satisfied customers
I want to install the Wifi Thermostat RTH8580WF. I have no
I want to install the Wifi Thermostat RTH8580WF. I have no C wire options - wiring is R and W only and running new cable is not an otion. However, an external transformer is a possibility. Some other … read more
Douglas
Douglas
Vocational, Technical or Trade Scho
3,111 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

8,339 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