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 cromotherm 111 older main zone thermostat & also a
I have cromotherm 111 older main zone thermostat & also a HOneywell slave thermost for theopposite side of the house. the main thermostat ha O white wire W/4 White G green R/5 red B blue Y/6 yellow. I… read more
Gaztech
Gaztech
Technician
Vocational, Technical or Trade School
1,479 satisfied customers
Connected a new smart thermostat and its flashing on and
connected a new smart thermostat and its flashing on and off … read more
Wes
Wes
HVAC Technician
Associate Degree
145 satisfied customers
I hope so. I am installing a Honeywell 24/7 thermostat and
I hope so. I am installing a Honeywell 24/7 thermostat and have labeled all my wires. I have a relatively new hvac in the home I recently purchase and have a question of wires. when removing the previ… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
14,114 satisfied customers
My son removed the old thermostat before I could label the
my son removed the old thermostat before I could label the wiring. I have green, orange, white, blue, yellow and a red wire. I purchase the wifi rth6580wf and need help with the wiring … read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
14,114 satisfied customers
I have a modine heater and a honeywell wi-fi thermostat.
I have a modine heater and a honeywell wi-fi thermostat. I've hooked up the red, blue and white. The thermostat has power but when I go to turn the heat on nothing happens. … read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
8,339 satisfied customers
I have a rheem central air, no heater that was installed
I have a rheem central air, no heater that was installed back in '98. I want to change the thermastat to a Honeywell wifi that I bought from Home Depot model #RTH6580WF. The Rheem unit in the attic th… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
14,114 satisfied customers
Wiring a Honeywell RTH6580WF to replace Trane weathertron. I
Wiring a Honeywell RTH6580WF to replace Trane weathertron. I know that the B line becomes the C on the Honeywell unit but I wired up and now have no power to the thermostat. … read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,394 satisfied customers
I replaced a an old battery powered thermostat with a new
I replaced a an old battery powered thermostat with a new honeywell wifi one. I had to use their alternative wiring diagram because the C wire goes to a humidistat instead of the thermostat. I got the… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
9,336 satisfied customers
I installed a new Honeywell RTH7600 this past winter and it
I installed a new Honeywell RTH7600 this past winter and it worked fine for heating. Now that I need the A/C the compressor does not kick on; only the fan on furnace. I have 4 colored wires - red, gre… 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 Service Technician
State Licensed Mechanical Contractor
14,114 satisfied customers
We are replacing a White-Rogers mercury thermostat, model 1F58-77
We are replacing a White-Rogers mercury thermostat, model 1F58-77 with a new Honeywell RTH6580WF digital/wifi thermostat and the wiring does not cross reference per the Honeywell installation instruct… read more
Appliance Guru
Appliance Guru
20,981 satisfied customers
Trying to put in a new thermostat with wifi capability. We
Trying to put in a new thermostat with wifi capability. We have a Laars EBP 110. From what I can tell, only the red and white wires are connected to the boiler, however their is a green, brown, blue, … read more
Rick
Rick
Supervisor
27,308 satisfied customers
I am replacing a Lennox LR11746 thermostat with a Honeywell
I am replacing a Lennox LR11746 thermostat with a Honeywell Focus PRO TH5220D1003 series. I don't have the original schematics from the old thermostat. I have these color wires: Yellow, red, blue, bro… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,394 satisfied customers
I replaced an old mercury switch thermostat with a new Honeywell
I replaced an old mercury switch thermostat with a new Honeywell RTH6580WF and connected the wires according to the 'heat pump' directions in the Honeywell manual. I have a Carrier Model 40AQ03000BB (… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,394 satisfied customers
i have a payne heat pump unit i installed a new thermostat
i have a payne heat pump unit i installed a new thermostat and now a/c works perfect but no heat it is an 8 wire setup. hopefully you can help were freezing its 45 degrees in here… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
9,336 satisfied customers
Just installed Ruud electric heat pump tstat connection wires
Just installed Ruud electric heat pump tstat connection wires are: red, wht/blk wire nutted to Purple-to compressor, brown, blue, yellow, blk/Grn Honeywell tstat - red on R terminal with jumper to RC … read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,394 satisfied customers
I am installing a Honeywell RTH7500D thermostat. The existing
I am installing a Honeywell RTH7500D thermostat. The existing Trane thermostat wiring does not match up with the wiring of the Honeywell. The trane has the following terminals with the corresponding w… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,394 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