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
7,634 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
5,375 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
1,024 satisfied customers
I'm trying to install a new Honeywell wifi thermostat model
Hello, I'm trying to install a new Honeywell wifi thermostat model Rth8580wf to replace a carrier tp-prh01-a thermostat. There are only two wires from the wall, a red and white. The red went to the v+… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
13,962 satisfied customers
I am trying to replace a Honeywell Chronotherm lll
I am trying to replace a Honeywell Chronotherm lll thermostat with a Honeywell RTH 9580 wifi thermostat. My existing Tstat has 4 wires: white, green, yellow and red plus a jumper to Rc. It appears tha… read more
Rick
Rick
HVAC Supervisor
25,710 satisfied customers
How do I install a wifi thermostat with a Thermolec TU? I
How do I install a wifi thermostat with a Thermolec TU? I need to get power to the C terminal to power the thermostat. It is a dual installation with a natural gas furnace.… read more
Appliance Guru
Appliance Guru
18,960 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
Can I replace the older round Honeywell thermostats with the
Can I replace the older round Honeywell thermostats with the Honeywell smart wifi thermostats if I have Honeywell hz311 installed? Heating and cooling. It appears to be a 4 wire feed into the thermost… read more
A-1 Tech
A-1 Tech
Service Manager
Vocational, Technical or Trade Scho
526 satisfied customers
I have just two wires in a 50 YO honeywell thermostat running
I have just two wires in a 50 YO honeywell thermostat running just heat. I can't pull an extra wire without tearing out a lot of plaster. Can I connect just the two wires and use batteries to power th… read more
Rick
Rick
HVAC Supervisor
25,710 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
I am replacing my white rodgers 1e30w-311 with a Honeywell
I am replacing my white rodgers 1e30w-311 with a Honeywell wi-fi programable. In need of serious help!… read more
Brian HVAC Guy
Brian HVAC Guy
HVAC Technician
High School
1,024 satisfied customers
trying to replace an auomag thermostat that has R W connections with a honeywell wifi th
trying to replace an auomag thermostat that has R W B connections with a honeywell wifi thermostat ; I need a "C" wire and need to which wires to use… read more
Rick
Rick
HVAC Supervisor
25,710 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
Mechanical Designer & Estimator
Vocational, Technical or Trade School
1,368 satisfied customers
I bought an RTF6580WF thermostat. To install it I need a C
I bought an RTF6580WF thermostat. To install it I need a C wire from my furnace,a Lennox CMWB4 Boiler with a Honeywell 1300 L8148 A107 Aquastat controller. My old programable thermostat has a W wire a… read more
Rick
Rick
HVAC Supervisor
25,710 satisfied customers
I am trying to hook up a venstar t1700 thermostat to my intertherm
I am trying to hook up a venstar t1700 thermostat to my intertherm model MGHA-056ABFC-02. The old thermostat was only a two wire hook-up and I cannot seem to get my venstar to work. It powers up but k… read more
Brian HVAC Guy
Brian HVAC Guy
HVAC Technician
High School
1,024 satisfied customers
Hi I am hooking up a wifi thermostat. I dont have A C wire
Hi I am hooking up a wifi thermostat. I don't have A C wire at the thermostat so I'm doing the"g crossover"method. Only problem is at the furnace module there is A C wire. It runs to the a/c unit outs… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
8,202 satisfied customers
I have a York Diamond 90 Furnace P3URB10N05501C - I recently
I have a York Diamond 90 Furnace P3URB10N05501C - I recently purchased a Honeywell WiFi thermostat and I need a 24v supply wire to the thermostat. There are five wires running to my thermostat now, al… read more
Tim H.
Tim H.
Lead building engineer
Vocational, Technical or Trade Scho
3,962 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
3,087 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