HVAC

Have HVAC questions? Ask an HVAC Expert for answers

Ask an Expert,
Get an Answer ASAP!

Related HVAC Questions
Rheem 90 plus furnace installed 1995 model rgra-07emaes
rheem 90 plus furnace installed 1995 model rgra-07emaes purge fan comes on then cycles off, occasionally the igniter will heat and lite but will not burn for a full cycle.… read more
airheatman
airheatman
HVAC Technician
6 years college
9,903 satisfied customers
2002 Ruud Acheiver 90 Plus starts cycle to fire and 2 sec
2002 Ruud Acheiver 90 Plus starts cycle to fire and 2 sec after lite goes out then after three cycles no lite first green light next to yellow light binks steady one time… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
13,933 satisfied customers
Bryant Furnace will go through all stages and ignite -10
Bryant Furnace will go through all stages and ignite for 5-10 seconds and shut off. Changed flame sensor… read more
Theplumber717
Theplumber717
Plumber
Vocational, Technical or Trade Scho
1,264 satisfied customers
have a comfortmaker furnace , will not ignite after 2-3 cycles,circuit
have a comfortmaker furnace , will not ignite after 2-3 cycles,circuit board light blinks 1 time say system is locked out… read more
Appliance Guru
Appliance Guru
18,832 satisfied customers
I have a Concord 80 + furnace andand the pilot light wont
I have a Concord 80 + furnace andand the pilot light won't stay lit but for only a couple seconds… read more
airheatman
airheatman
HVAC Technician
6 years college
9,903 satisfied customers
My concord 80 plus furnace will not ignite i replaced the igniter
My concord 80 plus furnace will not ignite i replaced the igniter and gas valve any suggestions… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,367 satisfied customers
I have a Concord 80 plus gas furnace. When the thermostat
I have a Concord 80 plus gas furnace. When the thermostat calls for heat the blower fan runs but will not fire. Some times it will fire but will only run for a few seconds and go out Thanks Jim… read more
Tim H.
Tim H.
Lead building engineer
Vocational, Technical or Trade Scho
3,962 satisfied customers
GMV91155DXA have a steady red light, furnace cycles, but the
GMV91155DXA have a steady red light, furnace cycles, but the burner stays on only for 19 seconds then goes out just to relight in 19 seconds on and on until it satisfies the thermostat.… read more
Tim H.
Tim H.
Lead building engineer
Vocational, Technical or Trade Scho
3,962 satisfied customers
I have a Janitrol model (GMP075-3). There seem to be a problem
I have a Janitrol model (GMP075-3). There seem to be a problem with the burner. It won't stay lite. When the unit is first turned on both the burner and the blower is working, but seconds later the bu… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
13,933 satisfied customers
Bryant Model 310AAV066135.... serial number 1003A27391...running
Bryant Model 310AAV066135.... serial number 1003A27391...running on propane. This furnance is not lighting. The cycle starts normally enough. Small motor starts running, glow igniter comes on, then th… read more
ComfortZone
ComfortZone
Associate Degree
515 satisfied customers
My furnace comes on, the gas ignites for a a couple of seconds
My furnace comes on, the gas ignites for a a couple of seconds and goes out, than after 15 seconds it ignites again and stays on for the duration of the cycle. I cleaned the ignitor with steel wool, b… read more
Richard
Richard
District Technical Manager
Vocational, Technical or Trade Scho
1,514 satisfied customers
to heat and air people, I have ammana aircommand 80 sse
to: XXXXX XXXXX air people, I have ammana aircommand 80 sse furnace you turn it on and it starts up like the gas is igniting than just keeps idiling with the motor going it does blow heat for like may… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,367 satisfied customers
My Ruud 80 plus unit was installed in 1987. I came home yesterday
My Ruud 80 plus unit was installed in 1987. I came home yesterday & it had stopped working for no apparent reason. It's a gas unit, all my other gas appliances are working fine. I attempted to relite … read more
TimVZ26
TimVZ26
Service Foreman
Vocational, Technical or Trade Scho
157 satisfied customers
my furnace isnt working right it was just blowing cold air
my furnace isnt working right it was just blowing cold air last night when i turned it off waited 5mins and turned it on it would work for a little bit but then the warm air turned cold again today th… read more
Matthew
Matthew
HVAC Technician
Bachelor's Degree
2,014 satisfied customers
TDD100R945C0 GAS FURNACE ignites then the flames are at low
TDD100R945C0 GAS FURNACE ignites then the flames are at low pressure then turns off ,trys again ignites then goes out,then p.c board lite reads steady on red to replace ignition module.. is this a boa… read more
Mark Henley
Mark Henley
HVAC Controls DDC
3,216 satisfied customers
I have a goodman heater model(Gmp 1 00-3 rev B) when it starts
I have a goodman heater model(Gmp 1 00-3 rev B) when it starts its cycle - the blower starts then the igniter heats up gas flows and it ignites and a couple seconds later the flame shuts down, but the… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
13,933 satisfied customers
I have a late model bryant plus 80 furnace. Installed in 2006.
I have a late model bryant plus 80 furnace. Installed in 2006. It has a pre-ignition cycle that starts up a fan, and after a short period the furnace ignites, followed by actual blower start up in 30 … read more
ComfortZone
ComfortZone
Associate Degree
515 satisfied customers
my new concord 80 plus furnace blows out just warm air and
my new concord 80 plus furnace blows out just warm air and not hot air like my old carrier furnace did. the installer said this is normal and there is no adjustment for the temperature of the air comi… read more
coolman1973
coolman1973
AC/Heat Tech
Vocational, Technical or Trade Scho
162 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