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 can I connect a 3rd generation Mest thermostat?
How can I connect a 3rd generation Mest thermostat? Specifically, the wiring at the Nest and at the Heil unit? … read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
14,620 satisfied customers
I an trying to replace an RCS TZ45A with a Honeywell
I an trying to replace an RCS TZ45A with a Honeywell RTH9580WF. This is a heatpump - ? dual stage Trane unit. The existing wiring on the RCS is: 24RC - red - also jumped to 24RH C - green Y1 - yellow … read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,490 satisfied customers
I have a Trane 4TTR7 2 stage condensing unit with a Trane 2
I have a Trane 4TTR7 2 stage condensing unit with a Trane 2 stage furnace system, but the 4 ton condensing unit can't cool down my 2nd floor effectively, it's not cold at all, It was installed 2 years… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
14,620 satisfied customers
Can you connect to wires to the com24v on the circuit board?
can you connect to wires to the com24v on the circuit board? One from the thermos. and one that is already there from the outside AC unit.… read more
Brian HVAC Guy
Brian HVAC Guy
HVAC Technician
High School
1,029 satisfied customers
Installing a honeywell 9450 Wi-Fi Thermostat. Current
installing a honeywell 9450 Wi-Fi Thermostat. Current wiring: Thermostat: G - Green wire Y - Blue W - White RD - Red Heating Unit Circuit Board: W2 - No Wire Y1 - Blue BHUN - No wire G - green wire CO… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
14,620 satisfied customers
Model number 4FXcc048AC3CAB it is Trane XB Old Thermostat
Model number 4FXcc048AC3CAB it is Trane XB Old Thermostat PRO-T705 New Thermostat Trane XL824 Old wires were and were connected to White - W Red - RH with a jumper to RC Green - G Yellow - Y Blue - no… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
14,620 satisfied customers
I am trying to install the Honeywell RTH7500D. After install
I am trying to install the Honeywell RTH7500D. After install it blows hot air when it should be cold. My original thermostat has wires connect to R-red, C-blue, O-orange, Y1 and W1 has a jumper with W… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,490 satisfied customers
I have 5 wires connected to a thermostat to a heat pump. The
I have 5 wires connected to a thermostat to a heat pump. The colors are green, red, white, blue, and yellow. The old thermostat is a Filtrete Model 3M-10. The wires were connected like this: green to … read more
Heath.M
Heath.M
Refrigeration Mechanic
Vocational, Technical or Trade School
223 satisfied customers
I have a Taystat 350 not working and a replacement thermostat
I have a Taystat 350 not working and a replacement thermostat - Hunter. How to match up wiring? Matches are G fan, W heating, and Y compressor. What to do with R ( red) and B (blue) on Trane unit to c… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,490 satisfied customers
We are installing a new thermostat for the furnace. A Honeywell
We are installing a new thermostat for the furnace. A Honeywell Model # ***** We put in a new wire and it is a bit different from the old. The old wires were White, Green, Red, Blue with the blue wire… read more
warmneighbor
warmneighbor
owner
Vocational, Technical or Trade Scho
162 satisfied customers
I have a Pro1IAQ model T955 thermostat (newly purchased) to
I have a Pro1IAQ model T955 thermostat (newly purchased) to replace my Honeywell T8024 thermostat. I was told that the new model is compatible. Our furnace is variable speed both the AC and heat syste… read more
Appliance Guru
Appliance Guru
23,545 satisfied customers
hi. i have a lenox 10acb60-11p. is this a heat pump? multi
hi. i have a lenox 10acb60-11p. is this a heat pump? multi stage or single stage? (not sure that is important). in short, my current thermostat has a red (connect to r, with a metal jumper to rc), whi… read more
BillyHvac
BillyHvac
Journeyman Service Technician/Inspector
State Licensed Mechanical Contractor
16,351 satisfied customers
Hi - I am replacing my honeywell programmable thermostat and
Hi - I am replacing my honeywell programmable thermostat and a burned out Perfect Climate W900A module with a 4 wire manual honeywell thermostat. I need directions on how to wire in the basement. Ther… read more
BillyHvac
BillyHvac
Journeyman Service Technician/Inspector
State Licensed Mechanical Contractor
16,351 satisfied customers
i have a honeywell chronotherm 3 , when i had my therostat
i have a honeywell chronotherm 3 , when i had my therostat moved the technition put in a new smaller one. i would like to put the honeywell backon ,but not sure of the conections.the wires coming from… read more
BillyHvac
BillyHvac
Journeyman Service Technician/Inspector
State Licensed Mechanical Contractor
16,351 satisfied customers
Hello Presently I have a heat pump furnace and Im trying
Hello XXXXX have a heat pump furnace and I'm trying to change a "Water Furnace" thermostat with a Honeywell RTH8500. Presently the Water Furnace has this configuration R Y/Y2 G C W/W1 O/W2 Y1 L The Ho… read more
Rick Mather
Rick Mather
HVAC Tech
Vocational, Technical or Trade Scho
3,631 satisfied customers
I have a Trane split system heat pump(XE 1200 Mod. TWP030-060C)
I have a Trane split system heat pump(XE 1200 Mod. TWP030-060C) 5 ton, connected to a Trane air handler(TWE065E130A0-3 phase). I, currently have a Trane nonprogrammable thermostat(Baystat240A) and I p… read more
Regan Land
Regan Land
General Manager
Vocational, Technical or Trade Scho
772 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
16,351 satisfied customers
am trying to replace Totaline thermostat with Honeywell rth
am trying to replace Totaline thermostat with Honeywell rth 7500 on Trane heat pump system. Totaline wires are: S1 - black S2 - orange 0/W2/B - blue R - red C - brown Y/Y2 - yellow Y1 - no wire G - gr… read more
Mark Henley
Mark Henley
HVAC Controls DDC
3,216 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

264 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