HVAC

Have HVAC questions? Ask an HVAC Expert for answers

Ask an Expert,
Get an Answer ASAP!

Related HVAC Questions
I have a 50D50-842 direct spark control using the spark rod
I have a 50D50-842 direct spark control using the spark rod for flame detection. When the demand for heat is applied, the spark starts, the slow open Honeywell valve delivers gas, the main burner igni… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,426 satisfied customers
I have been working with, on a Modine Model PAH 180 AF
Hello, I have been working with Tim, on a Modine Model PAH 180 AF serial 150120206992, gas unit heater. So far the relay,gas valve, pilot assemble, sensor rod and lead and primary control have been re… read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
I have an ancient Magic Chef furnace that wont turn on.
I have an ancient Magic Chef furnace that wont turn on. Pilot lights but it never kicks on to heat the house. Model is EG6A75D-8. … read more
MattR757
MattR757
HVAC Contractor / Owner
Associate Degree
14 satisfied customers
Goodman furnace model gms80603an approx. 2 years old. Inducer
Goodman furnace model gms80603an approx. 2 years old. Inducer starts correct. Igniter operates and lights gas flow. Blower comes on properly. Then the flame goes off and relights repeatedly and blower… read more
HVAC Guru
HVAC Guru
Service Technician
Associate Degree
682 satisfied customers
I'm having problems with a keeprite furnace, I replaced igniter
I'm having problems with a keeprite furnace, I replaced igniter assembly last month, seems like it's not lighting every time.… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
Diagnosing a Heatilator Gas Log Furnace, model GC300E / LE,
Diagnosing a Heatilator Gas Log Furnace, model GC300E / LE, that will not stay lit. Problem: Ignitor fires when activated by switch, gas valve opens, gas ignites, stays lit for about 4 seconds, gas va… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
I have a gas forced air furnace in garage (Fedders model CEG080N2CA
I have a gas forced air furnace in garage (Fedders model CEG080N2CA 80,000 btu) which has not been used for several years because previous owner never hooked vent back up after replacing roof. Now I w… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,426 satisfied customers
My Lennox 80UGH furnace is about 12 years old now. Never any
My Lennox 80UGH furnace is about 12 years old now. Never any issues. Annual inspection/cleaning by local gas company, etc. Recently the gas company switched gas meters and this morning the furnace isn… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
Our Trane gas furnace is about 17 years old. When it comes
Our Trane gas furnace is about 17 years old. When it comes on, the igniter comes on [glows orange], then goes out. It then starts the process over and continues doing this. However, the gas is never i… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,426 satisfied customers
My Lennox HS20 fan is working fine but the air is cold. Where
My Lennox HS20 fan is working fine but the air is cold. Where can i look to see if my pilot light is out? Or how can I troubleshoot my problem? Its snowing so I dont think I can get a tech out here fo… read more
M Oglesby
M Oglesby
Vocational, Technical or Trade Scho
2,010 satisfied customers
I have a tempstar natural gas furnace model nug5075bfb1 with
I have a tempstar natural gas furnace model nug5075bfb1 with a S8600M ignition module that is giving me trouble. The furnace operates correctly most of the time but occasionally requires multiple trie… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
4,135 satisfied customers
Woke up this morning to no heat from the gas furnace (20 years
Woke up this morning to no heat from the gas furnace (20 years old, Duomatic-Olsen). Thermostat calls for heat, induction fan starts, intermittent igniter-sensor lights the pilot, which then goes out … read more
ClimateCreator
ClimateCreator
28 satisfied customers
Heil model NUGK075DG07 gas furnace Troubleshooting
Troubleshooting Heil model NUGK075DG07 gas furnace. Fan, exhaust blower, interlocks: flue temp, rollout, fan control, pressure switch all test ok. Igniter comes on, ignites puff of gas, then goes out.… read more
HVAC_Doug
HVAC_Doug
Vocational, Technical or Trade Scho
i have a trane xl80. led flashing 9 times continuous. no
i have a trane xl80. led flashing 9 times continuous. no heat coming out. what's my next step. thanks… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,426 satisfied customers
I Have A Ruud silhoute Thermostat tells unit to heat,purge
I Have A Ruud silhoute Thermostat tells unit to heat,purge comes on,then igniter lites furnce then fan comes on. After the fan blower is on for 10 seconds gas shuts off flames go out, blower still run… read more
Heath
Heath
Vocational, Technical or Trade Scho
1,002 satisfied customers
Rheem hot air furnace, Model RGPH-15NARJR. The unit fires up
Rheem hot air furnace, Model RGPH-15NARJR. The unit fires up fine but in 10 seconds the gas shuts off. Apparently the gas valve isn't sensing the flame.… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
Hello, I have a RUUD model UDGA-075-ar gas heater with electric
Hello, I have a RUUD model UDGA-075-ar gas heater with electric ignition. The problem is that the ignitor lights the pilot light but the main burners will not come on and the ignitor keeps clicking. A… read more
Andrew
Andrew
Master's Degree
37 satisfied customers
i have an old bryant plus 90 furnace in my house. i have tried
i have an old bryant plus 90 furnace in my house. i have tried all the troubleshooting i can find. the thermostat works, the blower works, the AIR works, but still we can not get any heat. the electro… read more
Rick Mather
Rick Mather
HVAC Technician
Vocational, Technical or Trade Scho
3,133 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

7,426 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