HVAC

Have HVAC questions? Ask an HVAC Expert for answers

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

Related HVAC Questions
I have a Lennox LZP-4 zoning system and it has stopped
I have a Lennox LZP-4 zoning system and it has stopped cooling. In the past it was just needing a filter change. I tried this again but it hasn't come on again. … read more
Tamar D
Tamar D
Mechanic II
Vocational, Technical or Trade School
831 satisfied customers
I have a blinking red light on the circuit board of my
Hi, I have a blinking red light on the circuit board of my Lennox outdoor AC and it won't turn on. … read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
8,427 satisfied customers
I have a Lennox CH33-50/60C-2F-3 AC unit and the thermostat
Good afternoon. I have a Lennox CH33-50/60C-2F-3 AC unit and the thermostat is not receiving any power. I have checked the breaker at the main panel and it is on (I have switched it a couple of times)… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
14,293 satisfied customers
I have a Lennox Model iii Harmony and it seems to have
Hello. I have a Lennox Model iii Harmony and it seems to have stopped cooling. The only lights I have are a blinking green status and a solid FAN on light (red). No cooling light. … read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
8,427 satisfied customers
My Ac is not working. I am getting a critical alert code
Hi pearl. My Ac is not working. I am getting a critical alert code 411. Lennox ac unit. … read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
8,427 satisfied customers
Furnace is blowimg cold air. Pilot doesnt seem to be lit and
Furnace is blowimg cold air. Pilot doesnt seem to be lit and it has auto light for the pilot. … read more
Rick
Rick
Supervisor
28,001 satisfied customers
I have the ASU9RLQ Fujitsu Halcyon unit. My serviceman tells
I have the ASU9RLQ Fujitsu Halcyon unit. My serviceman tells me he goes by the # of times the Operation light blinks and how many times the Timer light blinks in order to determine what is wrong with … read more
airheatman
airheatman
HVAC Technician
6 years college
11,701 satisfied customers
You helped me get my ac running again last Sept. I'm hoping
Hello again. You helped me get my ac running again last Sept. I'm hoping you can walk me through another problem. This time the unit runs and runs, but no cool air comes out. It never shuts off, just … read more
airheatman
airheatman
HVAC Technician
6 years college
11,701 satisfied customers
I purchased a Honeywell thermostat had it installed and it
Hi, I purchased a Honeywell thermostat had it installed and it worked fine. our home had previouslu … read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
14,293 satisfied customers
Moved into our new home and they added an AC condenser. In
Moved into our new home and they added an AC condenser. In the mechanical room there is a bundle of three wires that are not hooked up to the main board of the furnace. The bundle goes to the AC conde… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
14,293 satisfied customers
Trying to see if my school unit is an easy repair, in south
Trying to see if my school unit is an easy repair, in south Florida waiting for Irma and the act goes out … read more
airheatman
airheatman
HVAC Technician
6 years college
11,701 satisfied customers
My a/c system just stopped. My Honeywell thermostat does not
My a/c system just stopped. My Honeywell thermostat does not show the current house temperature just "--". Tried changing from A/C to heat mode but system will not turn on. My Lenox furnace appears to… read more
Brian HVAC Guy
Brian HVAC Guy
HVAC Technician
High School
1,029 satisfied customers
I changed thermostats and now I can't get my AC to kick on.
I changed thermostats and now I can't get my AC to kick on. The blower blows but the condenser outside doesn't run.… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
14,293 satisfied customers
Our power went out last night when we were not home. It was
Our power went out last night when we were not home. It was out for 4 hours. After the power returned the AC stopped working. Now my Lennox Model C33-318-2F-3 … read more
Daniel Plourde
Daniel Plourde
plumbing, hvac technichian
Vocational, Technical or Trade School
559 satisfied customers
My AC stopped working today. Unit is Trane split system W/
HelloMy AC stopped working today. Unit is Trane split system W/ heat pump (heat not used) have furness under house. Model 2TWB / 2TWB0036A1000A. What I have tried so Far; Checked main circuit board un… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
14,293 satisfied customers
I have a Lennox 21j7101 tstat. I am replacing with a Pro1
I have a Lennox 21j7101 tstat. I am replacing with a Pro1 IAQ T715. Need wiring directions… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
14,293 satisfied customers
General 90 model 50A50-112 wont blow air through the vents
I have a General 90 Model 50A50-112 circuit board on my furnace, and when the thermostat is turned on for the cool air, the outside unit blows but no air comes through the vents in the house. The circ… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
14,293 satisfied customers
My HVAC is on the blink . A few days ago it cut off entirely.
My HVAC is on the "blink". A few days ago it cut off entirely. All I had to do was go up to the atic and turn off the elecrtical switch off and back on. That brought back the fan, but not the cold air… 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

8,427 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

1,029 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.

Tom

Tom

HVAC Technician

770 satisfied customers

16+yrs HVAC/R service. Residential Commerical Industrial

A-1 Tech

A-1 Tech

Service Manager

526 satisfied customers

I have been in the HVAC business for over 40 years.

< 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