HVAC

Have HVAC questions? Ask an HVAC Expert for answers

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

Related HVAC Questions
Can I put a 521 hard start kit on a Lennox xc16 two speed
can I put a 521 hard start kit on a Lennox xc16 two speed compressor or do I need the expensive Lennox model … read more
Gaztech
Gaztech
Technician
Vocational, Technical or Trade School
1,062 satisfied customers
My Lennox comfortSense 7500 is not working. The touchscreen
My Lennox comfortSense 7500 is not working. The touchscreen does not come on. No breakers are tripped. It is less ta … read more
Daniel Plourde
Daniel Plourde
plumbing, hvac technichian
Vocational, Technical or Trade School
474 satisfied customers
I have a Lennox c33-43c-2f-6 and the thermostat will not
I have a Lennox c33-43c-2f-6 and the thermostat will not come on to set the temperature worked last night but not this morning I have check all the breakers … read more
Gaztech
Gaztech
Technician
Vocational, Technical or Trade School
1,062 satisfied customers
My -rodgers thermostat on the wall has no power. we went to
my white-rodgers thermostat on the wall has no power. we went to bed on a very hot night and when we woke up in the morning, the unit was dead. i've turned on all the fuses on the inside home breaker … read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,375 satisfied customers
Lennox ComfortSense 7500 screen is blank does not respond to
Lennox ComfortSense 7500 screen is blank does not respond to touch … read more
airheatman
airheatman
HVAC Technician
10,145 satisfied customers
AC just went out and thermostat will not respond, Specific i
AC just went out and thermostat will not respond JA: Just to clarify, do you think this is a larger HVAC problem, or something specific to the thermostat? Customer: Specific i believe, AC is only 18 m… read more
airheatman
airheatman
HVAC Technician
10,145 satisfied customers
My church school has several Lennox 51M34 thermostats. Don't
My church school has several Lennox 51M34 thermostats. … read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,791 satisfied customers
How to change Lennox thermostat to heal/cool mode?
I have a Lennox Comfortsense 7500 thermostat and can't get it to change to a heal/cool mode. I believe it is a thermostat problem. New house and new system, 6 months old. I'm in Houston and this weeke… read more
Appliance Guru
Appliance Guru
18,977 satisfied customers
For about a week now, our Lennox iComfort programmable
For about a week now, our Lennox iComfort programmable thermostat has been malfunctioning. It will run for about a half hour, and then the screen will go dark and unresponsive; the air handler will ru… read more
HvacmanSean
HvacmanSean
Owner
HVAC
234 satisfied customers
Lennox, Model 19116B04475, cooling but not removing
Lennox, Model 19116B04475, cooling but not removing humidity. Temp at 74 degrees with 60 per cent humidity. Thermostat is Lennox 7500, humidity as well as temperature. This a 1350 sq ft condo. Way too… read more
Appliance Guru
Appliance Guru
18,977 satisfied customers
Our 7 months old lennox thermostat comfortsense 7500 screen
Our 7 months old lennox thermostat comfortsense 7500 screen goes black aroung 9:30 a.m. day time and comes back sometime dawn hours. We don't know what is causing this issue. This thermostat came with… read more
Tim H.
Tim H.
Lead building engineer
Vocational, Technical or Trade Scho
3,962 satisfied customers
My Aprilaire 8436 thermostat screen is blank. I assume the
My Aprilaire 8436 thermostat screen is blank. I assume the batteries are dead but with new ones the screen is still blank. Suggestions??… read more
Tim H.
Tim H.
Lead building engineer
Vocational, Technical or Trade Scho
3,962 satisfied customers
Scott. Trying to trouble shoot my Honeywell VisionPro TH9421C1004.
Hi Scott. Trying to trouble shoot my Honeywell VisionPro TH9421C1004. This afternoon the screen just went blank. Can't get it to come back to life… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
13,966 satisfied customers
I have a Visionpro IAQ thermostat in my house. It was installed
I have a Visionpro IAQ thermostat in my house. It was installed 4 yrs ago. last night the screen quit responding. We checked that the screen was not locked. The system shows OFF and we also show insid… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,375 satisfied customers
I have a 10 year old Bryant forced hot air gas heat and AC
I have a 10 year old Bryant forced hot air gas heat and AC unit, with Bryant Theromidistate. About three months ago the heat went out and the thermostat was blank. The local Bryant repair team replace… read more
A-1 Tech
A-1 Tech
Service Manager
Vocational, Technical or Trade Scho
526 satisfied customers
5 days ago our AC system started to fail. It couldnt cool
5 days ago our AC system started to fail. It couldn't cool the house properly. 4 ton, 7 year old Lennox unit (R-22) with encased horizontal evaporator coils in the attic. The home is 2200sq ft & 3 sto… read more
airheatman
airheatman
HVAC Technician
10,145 satisfied customers
I have a Honeywell RTH 7500 thermostat and a Trane 14i AC unit.
I have a Honeywell RTH 7500 thermostat and a Trane 14i AC unit. The thermostat has worked fine for almost three years. The last couple of nights the thermostat has gone blankrendering the AC unit inop… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
13,966 satisfied customers
have totaline star p474-1050 1 for all programmable digital
have totaline star p474-1050 "1 for all" programmable digital thermostat....problem began 2 days ago after unit has been operaing without a hitch for 5 yrs now....system turns on and cool mode is work… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
13,966 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