HVAC

Have HVAC questions? Ask an HVAC Expert for answers

Connect one-on-one with {0} who will answer your question

Related HVAC Questions
My furnace when it achieves the temperature set by the
Hello. My furnace when it achieves the temperature set by the thermostat stops heating but the blower stays on and blows cold air until the furnace is turned off. … read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,791 satisfied customers
7970 C856 fan cycles when burner is firing. A service tech
Coleman 7970 C856 fan cycles when burner is firing. A service tech replaced the limit switch. Worked for a short time and started to cycle again. Tech said the filters were dirty and the fan could not… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
13,963 satisfied customers
I have a presidential 2 furnace in my mobile home and the
I have a Coleman presidential 2 furnace in my mobile home and the blower motor stoped working I replaced the fan limit switch and it still don't come on … read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
8,217 satisfied customers
New Mobile Home: Furnace recently cleaned and inspected. Beckett
New Mobile Home: Furnace recently cleaned and inspected. Beckett R7184B prime controller. Brand new igniter. Burner cycles on and off every few minutes while there is a constant call for heat (thermos… read more
Rick
Rick
Supervisor
25,526 satisfied customers
I have a intertherm mmha model (mobile home) and the problem
I have a intertherm mmha model (mobile home) and the problem is the blower will not come on either by the thermostat or the fan side of the power switch in the furnace. the only way i can get it to co… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,375 satisfied customers
I have a light (status) blinking 4 times and my heat or
i have a light (status) blinking 4 times and my heat or condenser wont turn on but the fan blows even if the thermostat is in off position please help it is split unit (Mobil home) vexar fan furnace p… read more
Tim H.
Tim H.
Lead building engineer
Vocational, Technical or Trade Scho
3,962 satisfied customers
I have a Nordyne Intertherm furnace, model #M1MB070A BW, serial
I have a Nordyne Intertherm furnace, model #M1MB070A BW, serial #M1M000500035. It keeps shutting down soon after the flame lights. The control module indicates 1 red flash, limit switch open. What can… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
13,963 satisfied customers
Newer Coleman Mobile Home furnace (Plastic Front) Blower motor
Newer Coleman Mobile Home furnace (Plastic Front) Blower motor won;t come on, Computer Said: 1. Limit switch #4--replaced switch 2. computer then said Combustion Air switch failed to close Noisy --rep… read more
M Oglesby
M Oglesby
Vocational, Technical or Trade Scho
2,038 satisfied customers
I have an International MAC 1165 gas furnace in a mobile home
I have an International MAC 1165 gas furnace in a mobile home (circa 1968) The fan switch is not working. The fan & limit switch are on the same board marked TMAC 1165 I have not been able to locate a… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
13,963 satisfied customers
I have a miller oil furnace cfm60-po when I run the furnace
I have a miller oil furnace cfm60-po when I run the furnace the fan limit control switch turns the fan on at 90 deg and run up to 110deg and it puts the r4184g primary control into lock out befor it r… read more
Bill P.
Bill P.
Installer/ Troubleshooter/Technician
338 satisfied customers
I have a coleman dgaa090bdta furnace in my mobile home, it
I have a coleman dgaa090bdta furnace in my mobile home, it has started cycleing for extend preiods of time (worse at night). It starts to heat, then the fan starts, then the fan will quit but the comb… read more
Richard
Richard
District Technical Manager
Vocational, Technical or Trade Scho
1,514 satisfied customers
i am working on a coleman furnace that has ac also. It is a
i am working on a coleman furnace that has ac also. It is a model # XXXXX The home owner replaced the t stat. It only has two wires. I can't get the cooling to kick off unless i shut it off at the fur… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,375 satisfied customers
hello i have a mobile home heater if i put the heater on auto
hello i have a mobile home heater if i put the heater on auto the heater will heat up and the fan comes on for a min and then it shuts off but if i put the heater on cont. blower all the time the heat… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,375 satisfied customers
i have a 7655-856 furnace in my mobile home i recently switched
i have a 7655-856 furnace in my mobile home i recently switched to electric heat and want to bypass the ignition sensor to get the fan to run to circulate the air and filter it in my home ware would i… read more
Matthew
Matthew
HVAC Technician
Bachelor's Degree
2,014 satisfied customers
What could cause my furnace to run for 5-10 minutes then shut
What could cause my furnace to run for 5-10 minutes then shut off for 5-10...and keep doing that until its up to temp in the house.… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
13,963 satisfied customers
I have a Janitrol GMP series gas furnace. The blower turns
I have a Janitrol GMP series gas furnace. The blower turns on radomly and stays on for 3 or more minutes when the is no demand for heat. Is this a limit switch problem, a controller board problem or s… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
13,963 satisfied customers
The furnace in my mobile home .the burner stays lit all the
The furnace in my mobile home .the burner stays lit all the time and the blower short cycles all the time and it never gets warm. what could it be?… read more
JBM HVAC
JBM HVAC
HVAC/R Technician
Vocational, Technical or Trade Scho
50 satisfied customers
i have an electric furnace and would like to know a suitable
i have an electric furnace and would like to know a suitable thermostat for this electric furnace code and serial no. XXXXXXXXX MODEL NO. 3400A823 The problem is when in the heating mode the the eleme… read more
electrifier
electrifier
Owner - Contractor
Bachelor's Degree
1,610 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

7,791 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