HVAC

Have HVAC questions? Ask an HVAC Expert for answers

Ask an Expert,
Get an Answer ASAP!

I have a rheem water heater model number 21vr40-71. I have…

Customer Question
I have a rheem...

I have a rheem water heater model number 21vr40-71 . I have to keep turning the hot water higher because it keeps cooling down

Contractor's Assistant: How long has this been going on? And how severe is the problem?

I just bought the house .3 months ago

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

Yes i am a pipe fitter

Submitted: 28 days ago.Category: HVAC
Show More
Show Less
Ask Your Own HVAC Question
Answered in 1 minute by:
3/24/2018
HVAC Technician: Rick, HVAC Supervisor replied 28 days ago
Rick
Rick, HVAC Supervisor
Category: HVAC
Satisfied Customers: 23,770
Experience: 40+ yrs. experience as a licensed oil & gas technician.
Verified

Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your issue. First I’ll need some more info so I have a more complete picture of your situation.

I need a picture of the front of the tank showing the gas valve and related controls.

Click on the link below for info on posting pics here

http://ww2.justanswer.com/help/how-do-i-send-photo-or-file-expert-hl

Ask Your Own HVAC Question
Customer reply replied 28 days ago
I have been billed with no answer to my question
HVAC Technician: Rick, HVAC Supervisor replied 28 days ago

I need a picture of the front of the unit. This is an older model with no model specific info/ID. If you can't provide a pic I can't help you

Ask Your Own HVAC Question
Customer reply replied 28 days ago
please give me my money back for no answer
HVAC Technician: Rick, HVAC Supervisor replied 28 days ago

No info from you = no answer from me. I'll let customer service know you want a refund

Ask Your Own HVAC Question
HVAC Technician: Rick, HVAC Supervisor replied 28 days ago

Ok, it's a standard gas control valve. You need to replace it. Sounds like the temp sensor/thermostat is failing

Ask Your Own HVAC Question
Was this answer helpful?
Ask Phil Your Own Question
Phil
Phil
Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6,938
6,938 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

6,938 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

Kenton Guidry

Kenton Guidry

HVAC Technician

963 satisfied customers

12 years install/service experience.

Brian HVAC Guy

Brian HVAC Guy

HVAC Technician

953 satisfied customers

I have been an HVAC/R mechanic/technician for 30+ years.

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 have a GE water heater, Model #SG40T12AVG00. The pilot
I have a GE water heater, Model #SG40T12AVG00. The pilot light will not stay lit once you release the control valve in the "Pilot" position. Is my thermocouple bad? … read more
canuck the pro
canuck the pro
253 satisfied customers
We have a gas water heater and the pilot went out and now we
We have a gas water heater and the pilot went out and now we can't get it to light … read more
canuck the pro
canuck the pro
253 satisfied customers
My son has a Rheem power vent water heater, model number
My son has a Rheem power vent water heater, model number 5VRP40-P; serial number RMLP056113440. The power vent runs continuously, he unplugged the power for a bit and plugged back in and the power ven… read more
Rick
Rick
HVAC Supervisor
23,770 satisfied customers
We have a theme professional classic series hot water heater
We have a theme professional classic series hot water heater propane. We are getting natural gas in our area. Is there a conversion kit available for this. … read more
Rick
Rick
HVAC Supervisor
23,770 satisfied customers
How do you set the thermostat on an electric water heater?
How do you set the thermostat on an electric water heater? … read more
HVAC Guru
HVAC Guru
Service Technician
Associate Degree
682 satisfied customers
I have american water heater unit experiencing an E37 error
Hello, I have american water heater unit experiencing an E37 error code, would you be able to provide assistance? … read more
David Bowden
David Bowden
Owner
757 satisfied customers
I purchased a residential water heater 40 gal. and the
I purchased a residential water heater 40 gal. and the pressure valve lets a couple of oz. of water release. I read the instrustions about thermal expansion but as you might imagine the is limited spa… read more
Rick
Rick
HVAC Supervisor
23,770 satisfied customers
I have a gas water heater problem that I require assistance
I have a gas water heater problem that I require assistance for … read more
Rick
Rick
HVAC Supervisor
23,770 satisfied customers
My water heater is tripping the breaker. 3 months. Wont heat
My water heater is tripping the breaker JA: How long has this been going on? And how severe is the problem? Customer: 3 months. Wont heat water JA: Do you plan on doing the work yourself? Customer: Ye… read more
Don T.
Don T.
President
Associate Degree
179 satisfied customers
I have an Apollo 5010 water heater and the pilot keeps
I have an Apollo 5010 water heater and the pilot keeps shutting down. The repair person cannot get parts anywhere including the manufacture because it is too old. Please advise, thank you … read more
Rick
Rick
HVAC Supervisor
23,770 satisfied customers
We had a power outage and my tankless water heater (Model #
we had a power outage and my tankless water heater (Model # AT-K4UOSN) controller doesn't turn on I do have power to the electrical outlet … read more
Phil
Phil
Mechanical Engineer
6,938 satisfied customers
Have an AO hot water heater. Due to power outage and water
Hi Pearl, Have an AO Smith hot water heater. Due to power outage and water in basement, screen is flashing "FV Sense" … read more
Rick
Rick
HVAC Supervisor
23,770 satisfied customers
Does a Ruud 50 gallon Guardian hot water heater have two
Does a Ruud 50 gallon Guardian hot water heater have two burners … read more
Rick
Rick
HVAC Supervisor
23,770 satisfied customers
I have a Richmond 6G50 water heater. It was in a flood and
I have a Richmond 6G50 water heater. It was in a flood and water got into the unit. About 4 inches. Inwas able to shop vac all water that was between metal frame (only like .5 inch got in there) now t… read more
Rick
Rick
HVAC Supervisor
23,770 satisfied customers
I have a Bradford defender water heater with a Honeywell
I have a Bradford defender water heater with a Honeywell controller. It does not have a reset button and the pilot light is off … read more
HVAC Guru
HVAC Guru
Service Technician
Associate Degree
682 satisfied customers
We have a tankless water heater that was installed in our
we have a tankless water heater that was installed in our new house this last summer. Often, when it turns on it makes a noise kind of like JAWS approaching, that slowing gets louder and faster until … read more
WCohn
WCohn
Journeyman Plumber
Journeyman License
1,514 satisfied customers
My tankless water heater will not run, breaker not tripped
My tankless water heater will not run, breaker not tripped and when I push sw1 or sw2 it starts running while pressed in. What is my problem? … read more
Phil
Phil
Mechanical Engineer
6,938 satisfied customers
I have a water heater question! I have a RTE-13 water heater
I have a RTE-13 water heater where the reset button keeps popping. It has been going on for a week now … read more
HVAC Guru
HVAC Guru
Service Technician
Associate Degree
682 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