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 would like to change my HVAC thermostat to a different
Hello, I would like to change my HVAC thermostat to a different model, but need some help with installation.I currently have a Honeywell thermostat model RTH9580WF that is connected to a Honeywell Equ… read more
Daniel Plourde
Daniel Plourde
plumbing, hvac technichian
Vocational, Technical or Trade School
478 satisfied customers
Trying to change from old honeywell thermostat to new one.
Trying to change from old honeywell thermostat to new one. Old was numbered 1,2, 3 with red wire to 1, white wire to 2 and green wire to 3. New Honeywell isn't labeled that way. How do I hook it up? … read more
Regan Land
Regan Land
General Manager
Vocational, Technical or Trade Scho
769 satisfied customers
I have a zvc404-4 and a Honeywell perstige eim that controls
I have a zvc404-4 and a Honeywell perstige eim that controls my heat pump and electric forced air heat. I am trying to connect the taco zone one to the 3rd stage of backup heat on the eim… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,634 satisfied customers
I have the Honeywell 9421C1004 thermostat with the EIM in my
I have the Honeywell 9421C1004 thermostat with the EIM in my house on two separate units. One of the thermostats display was out, so I went and bought a Nest without knowing exactly what I was in for … read more
Regan Land
Regan Land
General Manager
Vocational, Technical or Trade Scho
769 satisfied customers
Weill-McNeill EG gas boiler w/o tankless water heater.
Weill-McNeill EG gas boiler w/o tankless water heater. … read more
Rick
Rick
Supervisor
25,599 satisfied customers
I am trying to replace an older Honeywell thermostat with a
I am trying to replace an older Honeywell thermostat with a newer one but I have a wired EIM so my old thermostat has just three wires that are labeled 1, 2, 3. I do not know where to put these wires … read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
8,271 satisfied customers
I am looking at installing an ecobee4 thermostat but am
I am looking at installing an ecobee4 thermostat but am confused a little by my current thermostat … read more
Brian HVAC Guy
Brian HVAC Guy
HVAC Technician
High School
1,024 satisfied customers
I am replacing a honeywell visionpro iaq thermostat with a
i am replacing a honeywell visionpro iaq thermostat with a 3rd gen nest thermostat. the honeywell iaq is connected to an eim. at the thermostat, there are 4 "unlabeled" wires. their colors are red, wh… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
13,970 satisfied customers
I have a Honeywell Digital thermostat that fell and broke. I
Hi. I have a Honeywell Digital thermostat that fell and broke. I purchased a new one today, but I am having trouble wiring. The old one had red, blue, and white wires running to 1,2,and 3. They are co… read more
Appliance Guru
Appliance Guru
19,012 satisfied customers
I am not at the house, so I cannot check the heater but, I
I am not at the house, so I cannot check the heater but, I had a Honeywell VisionPRO® IAQ Total Home Comfort System that was digital and does not require batteries. The T\Stat display died (would not … read more
Brian HVAC Guy
Brian HVAC Guy
HVAC Technician
High School
1,024 satisfied customers
I have a 1 stage hvac with 2 dampered zones. Panel is a ewc
I have a 1 stage hvac with 2 dampered zones. Panel is a ewc 300. A few months ago I installed 2 stats honeywell thx9421 (2 wires) through EIM so zone 1 could also control a aprilair humidifier and I c… read more
Brian HVAC Guy
Brian HVAC Guy
HVAC Technician
High School
1,024 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
1,024 satisfied customers
I would like to replace 2 thermostats in my home with WiFi
I would like to replace 2 thermostats in my home with WiFi t-stats so I can monitor and adjust temperature via the internet. A picture of my current Honeywell thermostat is attached. It is connect to … read more
A-1 Tech
A-1 Tech
Service Manager
Vocational, Technical or Trade Scho
526 satisfied customers
Hi, I want to install a Honeywell Wireless Focus Pro (THM5320R),
Hi, I want to install a Honeywell Wireless Focus Pro (THM5320R), I just found out my current thermostat is battery power and there is no common wired available. I have purchased a ELK-TRG2440 24VAC Tr… read more
Brian HVAC Guy
Brian HVAC Guy
HVAC Technician
High School
1,024 satisfied customers
Install NEST Thermostat to replace Honeywell 7-Day Program
Current Thermostat: Honeywell 7-Day Programmable Honeywell Vision Pro IAQ (Model: TH9421C1004) Current Equipment Interface Module: Honeywell Vision Pro IAQ Current Furnace: Lennox Current Damper Actua… read more
Scott
Scott
Self Employed HVAC Service Technician
Associate Degree
400 satisfied customers
I have a Honeywell thermostat that is the second of two installed.
I have a Honeywell thermostat that is the second of two installed. I removed it to install the NEST thermostat and am trying to reinstall the Honeywell and do not know the proper wire configuration.… read more
R.G.
R.G.
318 satisfied customers
Hi Billy -- I am trying to connect a Honeywell Equipment Interface
Hi Billy -- I am trying to connect a Honeywell Equipment Interface Module (Model THM5421R1005) to a Bryant furnace (Model 383KAV). Would you be able to help?… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
13,970 satisfied customers
I have a honeywell prestige THX9000 wireless IAQ thermostat
I have a honeywell prestige THX9000 wireless IAQ thermostat that I Just received. AlongWith A Honeywell True Steam Humidifier. I have 4 wires running off the old thermostat Red,white,green, and yellow… read more
Matthew
Matthew
HVAC Technician
Bachelor's Degree
2,014 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

7,634 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

1,024 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.

Rick Ridley

Rick Ridley

UK Heating Engineer

871 satisfied customers

Retired But have had 30 years on the tools, Ex CORGI

Tom

Tom

HVAC Technician

770 satisfied customers

16+yrs HVAC/R service. Residential Commerical Industrial

< 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