HVAC

Have HVAC questions? Ask an HVAC Expert for answers

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

Related HVAC Questions
How are you. Got a free nest learning thermostat - however,
got a free nest learning thermostat - however, i have a 6 wire honeywell chronotherm III thermostat with a mastertrol mm-2 … read more
Tamar D
Tamar D
Mechanic II
Vocational, Technical or Trade School
4,823 satisfied customers
I am replacing a SimpleComfort 2210 thermostat with a Honeywell
I am replacing a SimpleComfort 2210 thermostat with a Honeywell RTHL3550, specifically with heat pump. The available terminals on the Honeywell are (right to left) L AUX/E G O/B NOTUSED Y R RC. The te… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
14,812 satisfied customers
How do I wire up a new smart programmable t-stat to my 8-wire
How do I wire up a new smart programmable t-stat to my 8-wire Chronotherm III t-stat for controlling my heat pump? It's a Lennox h/p with aux. heat strips (2 of them) plus a fan system. I can't figure… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
14,812 satisfied customers
Im replacing a Carrier thermostat with a Honeywell RTH650.
I'm replacing a Carrier thermostat with a Honeywell RTH650. The way the Carrier was wired was orange wire to -0 W2 B , red wire to -r,brown wire to -C ,yellow wire -YY2 ,green wire - G ,and white wire… read more
jHVAC
jHVAC
131 satisfied customers
Im trying to replace a honeywell T841 thermostat with a honeywell
I'm trying to replace a honeywell T841 thermostat with a honeywell th8320u. The old thermostat is using the wires R E Y X W2 O G. My system is a single stage cool heatpump with electric emergency heat… read more
BillyHvac
BillyHvac
Journeyman Service Technician/Inspector
State Licensed Mechanical Contractor
16,417 satisfied customers
I am replacing an old honeywell chronotherm III unit with a
I am replacing an old honeywell chronotherm III unit with a new honeywell rth7500. Old unit had The following colored wires as such: Orange-O White-w Green-g Red-r with Rc jump Blue-b Yellow-y Pretty … read more
BillyHvac
BillyHvac
Journeyman Service Technician/Inspector
State Licensed Mechanical Contractor
16,417 satisfied customers
Replacing a Honeywell Chronotherm III with a VisionPro 8000.
Replacing a Honeywell Chronotherm III with a VisionPro 8000. Oil heat and electric AC. The Chronotherm controls 1 zone but also is the master to a 2nd zone in terms of switching from heat to coool to … read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,490 satisfied customers
I use the Honeywell Chronotherm III thermostat to control my
I use the Honeywell Chronotherm III thermostat to control my A/C only. nothing is on the display but i can make the A/C go off and on with the "Fan on" button. But still no display????? do i need a ne… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,490 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
5,490 satisfied customers
I have a Honeywell TH6220D1002 5 years old for my heat pump
I have a Honeywell TH6220D1002 5 years old for my heat pump system that goes off and on (no display) despite fresh batteries. Do I need to replace or is their another reason? If replace can I use a la… read more
Richard
Richard
District Technical Manager
Vocational, Technical or Trade Scho
1,514 satisfied customers
Now replacing Honeywell Chronotherm III digital thermostat
Now replacing Honeywell Chronotherm III digital thermostat from York ac/heat pump with the recommended Honeywell Touchscreen Vision Pro 8000 TH8320U1008. Old wiring attached to posts Red=R, Blue=C, Or… read more
Regan Land
Regan Land
General Manager
Vocational, Technical or Trade Scho
772 satisfied customers
I am replacing a Chrontherm III with an RTH7600. There are
I am replacing a Chrontherm III with an RTH7600. There are a couple of wries that don't not match up. Chronotherm III RTH7600 R Red R and RC have a jumper on it Red???? C Blue C ?????? Y Yellow Y Yell… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,490 satisfied customers
i am upgrading my t-state from a weathertron model 3aab81a1b1
i am upgrading my t-state from a weathertron model 3aab81a1b1 to a honeywell rth7600. the wire from the wall has 7 wires which were connected to the follow disgnated connection on the t-stat/ with a w… read more
Richard
Richard
District Technical Manager
Vocational, Technical or Trade Scho
1,514 satisfied customers
Trying to replace Honeywell Chronotherm III with Honeywell
Trying to replace Honeywell Chronotherm III with Honeywell RTH3100C; old one has W1 and W2 wires; 3100 has only one spot for Aux/W/W1/W2. I have E, L, and B unoccupied. which wire should I put where? … read more
Rick Mather
Rick Mather
HVAC Tech
Vocational, Technical or Trade Scho
3,631 satisfied customers
I just installed a Honeywell RCT8100 thermostat. Transferred
I just installed a Honeywell RCT8100 thermostat. Transferred the wires per the instruction book, but the heat is on when I'm expecting AC. The wires that were transferred were R, W, Y, G, and that lef… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,490 satisfied customers
I have a Totaline P474-0100 thermostat and Im trying to replace
I have a Totaline P474-0100 thermostat and I'm trying to replace it with a Honeywell RTH8500 unit. The instructions state that if I have both a W1 & W2 wire connected, that I should call a licensed co… read more
BillyHvac
BillyHvac
Journeyman Service Technician/Inspector
State Licensed Mechanical Contractor
16,417 satisfied customers
I am trying to replace a honeywell Chronotherm III thermostat.
I am trying to replace a honeywell Chronotherm III thermostat. I purchased the VisionPro 8110 thermostat but it looks as if there isn't a place to connect the Emergency heat relay. Do I need to connec… read more
Kenton Guidry
Kenton Guidry
HVAC Technician
Vocational, Technical or Trade Scho
963 satisfied customers
i just purchased a Honeywell RTH 7600 thermostate, followed
i just purchased a Honeywell RTH 7600 thermostate, followed the instructions and installed. i was replacing a Honeywell Chromotherm III so a wiring crosswalk had to be applied. i've gone over the wiri… read more
Rick Mather
Rick Mather
HVAC Tech
Vocational, Technical or Trade Scho
3,631 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:

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.

Jerry

Jerry

Service Technician

576 satisfied customers

HVAC Technician. Hearth Products Specialty

A-1 Tech

A-1 Tech

Service Manager

526 satisfied customers

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

Thehvacguy

Thehvacguy

LIC HVAC,Plumber

426 satisfied customers

Certified HVAC Universal Technician,Lic plumbing contractor, 28 yrs exp

Drcool

Drcool

HVAC Technician

331 satisfied customers

i have been an A/C tech for the past 30 Years. working on window types, split type, and package

N4IEA

N4IEA

NATE Certified; HVAC Technician

227 satisfied customers

Retired, HVAC / Electrical Technician / Contractor 35-years Experience.

< 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