HVAC

Have HVAC questions? Ask an HVAC Expert for answers

Ask an Expert,
Get an Answer ASAP!

Related HVAC Questions
Our Noritz N-0751-M water heater produces only tepid water.
Our Noritz N-0751-M water heater produces only tepid water. I have set the thermostat to 130; does not matter. I have flushed the unit for > one hour with vinegar, and removed the filter. We have s… read more
Mike R.
Mike R.
2,957 satisfied customers
Our home thermostat will not adjust up or down. I don't
I don't know. The AC would run yesterday, but not adjust. Now it will not adjust and the AC won't turn on. … read more
Gaztech
Gaztech
Technician
Vocational, Technical or Trade School
1,988 satisfied customers
I have a Thermolec dual energy oil/electrical. I currently
I have a Thermolec dual energy oil/electrical. I currently need to run it with the switch set to electrical only as rebuilding the chimney.After running for a while the green light over electrical swi… read more
Gaztech
Gaztech
Technician
Vocational, Technical or Trade School
1,988 satisfied customers
Temp on Rinnai 2532FFU water heater not going above 120 degrees
I have a rinnai 2532FFU water heater and a MC-91-1 controller. I can not set the tempature above 120 Degrees. I should be able to set up to 140 Degrees. How do I increase the temp above 120 degrees.… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
7,807 satisfied customers
I have a Honeywell thermostat ANS Z21.23 on my oil fired
I have a Honeywell thermostat ANS Z21.23 on my oil fired water heater. There is a rotating dial that I believe controls the temperature of the water. How do I adjust it for colder water?… read more
BillyHvac
BillyHvac
Journeyman HVAC Tech
State Licensed Mechanical Contractor
23,203 satisfied customers
Have a Rheem tankless, about two years old. Used, closed
Have a Rheem tankless, about two years old. Used for heating only, closed loop no connection to domestic water. Umc-117 remote controller will only allow 140 degrees F temp set. would like to set 150 … read more
Rick
Rick
Supervisor
24,906 satisfied customers
Hey Doug I have a rinnai R94SLI tankless that I continues
Hey Doug I have a rinnai R94SLI tankless that I continues to stop producing hot water on and off after running for 5 to 8 minutes. I have flushed it 3 times recently. I asked a my plumber and he sugge… read more
Nathan Marshall, MP
Nathan Marshall, MP
Master Plumber,HVAC Tech,Tradesman
Vocational, Technical or Trade School
275 satisfied customers
I have a Rinnai RL94 and FINALLY figured out how to turn the
I have a Rinnai RL94 and FINALLY figured out how to turn the hot water up, for some reason on this model it is dip switch #6; my question is what are the other dip switches for? I do not have a thermo… read more
Jerry M.
Jerry M.
Senior HVAC Technician
High School or GED
153 satisfied customers
coleman presidential II turns on and off for several minutes
coleman presidential II: turns on and off for several minutes after the desired temperature has been achieved. What would cause that?… read more
MagiicAir
MagiicAir
HVAC Service Supervisor
Vocational, Technical or Trade Scho
110 satisfied customers
I have a Bradford White oil fired water heater model # CF-32-6
I have a Bradford White oil fired water heater model # XXXXX installed 5 months ago.We didn't notice a problem until this winter. My wife likes to take baths rather than showrers in the winter. she fo… read more
Douglas
Douglas
Vocational, Technical or Trade Scho
3,087 satisfied customers
hI, i RECENTLY RAN OUT OF OIL AND HAD TO HAVE THE FURNACE
hI, i RECENTLY RAN OUT OF OIL AND HAD TO HAVE THE FURNACE RESTARTED. This fiurnace also heats my hot water. Duel zone set-up. My question is - what would cause the thermostate for the hot water tank n… read more
Douglas
Douglas
Vocational, Technical or Trade Scho
3,087 satisfied customers
I have A kenmore gas water heater ,and the gas control valve
I have A kenmore gas water heater ,and the gas control valve is made by Robt. Shaw. The problem- At the A temp. setting(manual says at this setting water will be about 120 degrees) my water temp. VARI… read more
Rick Mather
Rick Mather
HVAC Technician
Vocational, Technical or Trade Scho
3,133 satisfied customers
Plumber installed 2 new 22V40F1 gas water heaters each with
Plumber installed 2 new 22V40F1 gas water heaters each with an extra anode/dip tube to extend the warranty to 10 years. House has circulating hot water set up to ensure immediate hot water on second l… read more
Dan Linger
Dan Linger
Lead Technician / Energy Consultant
Bachelor's Degree
62 satisfied customers
I am a solar installer, I have a client that is interested
I am a solar installer, I have a client that is interested in a solar system. they currently have a Rinnai R94LSi tankless water heater. I want to feed the water heater with solar preheated water. I w… read more
Rick Mather
Rick Mather
HVAC Technician
Vocational, Technical or Trade Scho
3,133 satisfied customers
I have a RayPak low NOx model 267A heater that I purchased
I have a RayPak low NOx model 267A heater that I purchased to replace a Raypak 400K BTU model. I connected it to the same gas line. When I turn on the heater, I see the code RV1, then CFH After a brie… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,362 satisfied customers
I have 2 questions concerning my Lennox thermostat. It is a
I have 2 questions concerning my Lennox thermostat. It is a model 51M32 1) how can I change the temperature value to Celsius? 2) how can I turn off the continuous fan operation? I have set the fan to … read more
Mark Henley
Mark Henley
HVAC Controls DDC
3,216 satisfied customers
I have a Rinnai tankless water heater that recently stopped
I have a Rinnai tankless water heater that recently stopped working properly, following a severe bout of cold weather (snow, ice, temps. below 25 degrees). I am unable to change the temp. setting on t… read more
Mark Henley
Mark Henley
HVAC Controls DDC
3,216 satisfied customers
How can I set my variable speed blower to not blow at the lowest
How can I set my variable speed blower to not blow at the lowest settings when the fan is called by my steam (Skuttle) humidifier?… read more
Ronald
Ronald
Consultant
Bachelor's Degree
4 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