HVAC

Have HVAC questions? Ask an HVAC Expert for answers

Ask an Expert,
Get an Answer ASAP!

Furnace blowing cold air,Filter is good,burner is on.

Customer Question
Furnace blowing cold air,Filter...

Furnace blowing cold air,Filter is good,burner is on

Contractor's Assistant: Did you double-check the thermostat's settings? And what about the filters?

Yes Filters new

Contractor's Assistant: Do you plan on doing the work yourself?

Yes

Contractor's Assistant: Anything else we should know to help you best?

Its not flashing any codes

Submitted: 3 months ago.Category: HVAC
Show More
Show Less
Ask Your Own HVAC Question
Answered in 3 minutes by:
3/28/2018
HVAC Technician: Gaztech, HVAC Technician replied 3 months ago
Gaztech
Gaztech, HVAC Technician
Category: HVAC
Satisfied Customers: 924
Experience: Owner at Gaztech
Verified

Hi I amCustomer a independent technician, I will assist you with your issue.

You said burner is on.... you mean burners have flame?

Ask Your Own HVAC Question
HVAC Technician: Gaztech, HVAC Technician replied 3 months ago

and blower fan is running? and its giving cold air??

Give me more specific info please

Ask Your Own HVAC Question
Customer reply replied 3 months ago
Burners came on heated up the firebox blower kicked on but main burners never came on
Customer reply replied 3 months ago
Burners came on heated up the firebox blower kicked on but main burners never came on
Sorry just telling you what i see . thru the sight glass i got a firebox full of blue flame blower is on air coming out of duct work is cold
HVAC Technician: Gaztech, HVAC Technician replied 3 months ago

I will have to opt out

Ask Your Own HVAC Question
Customer reply replied 3 months ago
Burners came on heated up the firebox blower kicked on but main burners never came on
Sorry just telling you what i see . thru the sight glass i got a firebox full of blue flame blower is on air coming out of duct work is cold I was under the impression That after the burners came on the blower kicked on and the draft inducer fan stop ,Inducer fan never stops
HVAC Technician: Gaztech, HVAC Technician replied 3 months ago

I reviewed your info and I think that you are refering to a two stage furnace, and what you are saying is burners are coming on at low flame and your not seeing high flame, Is this right?

To stage furnaces start at low flame for 10-12min. then should engage to high flame if thermostat demand was not reached.

It will do this unless control board is set not to, or something wrong with system.

Or either you did not wait long enough to witness high flame.

Ask Your Own HVAC Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a hvac technicianLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Phil Your Own Question
Phil
Phil
Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 7,426
7,426 Satisfied Customers
Experience: Retired HVAC/ Electrical & Boiler contractor. Industrial

Phil is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

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

1,019 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 >

Related HVAC Questions
I too have a York Diamond 80. The heat does not come on. The
I too have a York Diamond 80. The heat does not come on. The thermostat seems to be doing its job. The blower comes on but the heat does not. I checked the pressure switch by blowing into the tube and… read more
Gaztech
Gaztech
HVAC Technician
924 satisfied customers
I have a carrier 9200 gas furnace the piolet lites the
I have a carrier 9200 gas furnace the piolet lites the burner comes both blowers run top of furnace gets hot but blows cold air out vent condensate trap seems to be clear tried new thermostat still no… read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
I have a Lennox SL28 furnace blowing cold air. I didn't
Hi, I have a Lennox SL28 furnace blowing cold air. I didn't realize that the setup has 2 filters, and one was filthy. I've changed both filters. Turned of the power supply for about 10mins, checked th… read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
my furnace keeps shutting off. I press the reset button, it
my furnace keeps shutting off. I press the reset button, it comes on then reaches the set temp goes off, then wont come back on until I hit the reset button again.… read more
theplumber717
theplumber717
Plumber
Vocational, Technical or Trade Scho
791 satisfied customers
I woke up this morning and my Bryant thermostat###-##-####00001
I woke up this morning and my Bryant thermostat###-##-####00001 screen is blank and cold air is blowing from the vents.… read more
theplumber717
theplumber717
Plumber
Vocational, Technical or Trade Scho
791 satisfied customers
Hello, I have a Payne furnace Model PG8JAA/MAA which heats
Hello, I have a Payne furnace Model PG8JAA/MAA which heats a smaller sun room. I replaced the filter last night and now the furnace is blowing luke warm air and not heating the room above 59 degrees. … read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
Trane xb80 furnace throwing 'open high limit device ' code.
Trane xb80 furnace throwing 'open high limit device ' code. Need assistance due to cold weather this evening!… read more
theplumber717
theplumber717
Plumber
Vocational, Technical or Trade Scho
791 satisfied customers
Hello, I have furnace model TG9S080B12MP11A. When i program
Hello, I have furnace model TG9S080B12MP11A. When i program my thermostat to drop the house temperature when i leave my house and raise it 1hr before i get home, the furnace blows hot air then cold ai… read more
Tim H.
Tim H.
Lead building engineer
Vocational, Technical or Trade Scho
3,962 satisfied customers
The burner is not lighting. The pilot light goes own, but the
The burner is not lighting. The pilot light goes own, but the burner does not fire up. the pilot light goes off and then the furnace is stuck in its cycle. then the fan continues to blow cold air and … read more
theplumber717
theplumber717
Plumber
Vocational, Technical or Trade Scho
791 satisfied customers
CARRIER Comfort™ 80 Funace just blows cold air. Ritetemp (Model
CARRIER Comfort™ 80 Funace just blows cold air. Ritetemp (Model 8029B) Thermostat has fresh batteries. Furnace stays blowing after putting the thermostat switch in the off/auto position. Any recommend… read more
theplumber717
theplumber717
Plumber
Vocational, Technical or Trade Scho
791 satisfied customers
I have a carrier weather maker 9200 the blower motor turns
I have a carrier weather maker 9200 the blower motor turns on for about three minutes blowing out cold air then cuts off. it seems like the burner does not light.… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
13,790 satisfied customers
Heater not turning off and suddenly started to blow cold air
My heater suddenly started blowing cold air last night. It also would not turn off, and the blower ran all night without stopping. I turned the thermostat to "off" this morning, and the blowers still … read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
My furnace is blowing cold air and, because it is not heating,
My furnace is blowing cold air and, because it is not heating, it will not shut off. It is probably connected to the fact that I am having work done on my house (roof exposed; redoing ceiling) because… read more
M Oglesby
M Oglesby
Vocational, Technical or Trade Scho
2,038 satisfied customers
Trane xr90 is blowing cold air the LED light flashes twice
Trane xr90 is blowing cold air the LED light flashes twice i cleaned the filter not sure where the circuit breaker is or if i need to reset it.… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,349 satisfied customers
American Standard Furnace error codes 2 flashes. Blowing cold air.
We have an American Standard Furnace that has had problems since installation approx. 6 years ago. The furnace will ignite (sometimes) and heat will be distributed -- then switch to cold air and cycle… read more
G Wurtz
G Wurtz
Instructor of HVACR Program
Master\u0027s Degree
57 satisfied customers
We have a furnace that sometimes blows cold air. When it does
We have a furnace that sometimes blows cold air. When it does this we turn off the heat via the thermostat, then turn it on again, and then it blows warm air. Why does it do this sometimes?… read more
Bill
Bill
High School or GED
318 satisfied customers
Im hoping I can get some help diagnosing a problem with my
I'm hoping I can get some help diagnosing a problem with my heater. It is a gas Lennox Furnance MN# XXXXX . It's been updated to the EGC-1. My problem is when i turn on the furance everything is fine … read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
13,790 satisfied customers
My furnace is blowing out cold area--the burner will not ignite.
My furnace is blowing out cold area--the burner will not ignite. the light is flashing code #33. I have checked the filter and it is clean (less than a month old) Any suggestions...its in the mid 20's… 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.

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