Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 12-11-2013, 05:10 PM   #1
Junior Member
gitarwmn's Avatar
Join Date: Feb 2011
Posts: 23
Adjust Water Heater

Hello, I'm a newbie full timer in a Thor 34K Daybreak motor home. One thing I've noticed since moving onto the rig is that the water temperature is very hot, even scorching.

Does anyone know how to adjust the water heater temperature? What is the optimum temp for someone living in the Pacific NW (temps in the 30s and 40s)? Should this be done by a professional? I was told when I picked up my rig never to monkey with the water heater. But the guy that toured its operation with us was a bit of a jerk so I don't trust everything he told us.

gitarwmn (aka The Culinary Camper)

gitarwmn is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 12-11-2013, 05:14 PM   #2
Senior Member
J Birder's Avatar
Join Date: Feb 2012
Location: Lake County, IL
Posts: 1,102
There may be some, but I have never seen an RV water heater with any kind of temperature adjustment.


Retired electronics engineer. Avid paddler & birder.
2011 Silverado 2500HD, diesel, 4x4,crew cab, 8' bed
Palomino Puma 253FBS (27' 5er) & '94 19' Class B
J Birder is offline   Reply With Quote
Old 12-11-2013, 05:15 PM   #3
Senior Member
tanstaafl's Avatar
Tiffin Owners Club
Ford Super Duty Owner
Join Date: Sep 2012
Location: North Port, Fl
Posts: 588
I use the cold water to adjust temperature. This allows you to use less hot water and thereby extend the amount available, especially for showers.
Not all who wander are lost.

2014 Allegro 36LA
tanstaafl is offline   Reply With Quote
Old 12-11-2013, 05:25 PM   #4
Senior Member
Join Date: Sep 2012
Posts: 4,232
If it's a standard Atwood or Suburban you have no temp adjustment. Just less hot and more cold.
jesilvas is offline   Reply With Quote
Old 12-11-2013, 05:30 PM   #5
Senior Member
AttilaKara72's Avatar
Monaco Owners Club
Join Date: Mar 2013
Location: Massachusettes
Posts: 337
To adjust the temp turn the cold on first then add the hot water. This will make your hot water last longer in a shower.
1999 Monaco Windsor with a 330 Cummins.
AttilaKara72 is online now   Reply With Quote
Old 12-11-2013, 05:44 PM   #6
Senior Member
BFlinn181's Avatar

Gulf Streamers Club
Join Date: Jan 2012
Location: Cincinnati
Posts: 12,624
The water heater is set to produce the hottest water so you won't run out as fast. You could buy new temperature limiters to lower the temperature, but there's no dial or adjustment on the tank. You could change out faucets to a single handle version if you have separate hot and cold valves.

Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
BFlinn181 is online now   Reply With Quote
Old 12-11-2013, 06:25 PM   #7
Moderator Emeritus
Gary RVRoamer's Avatar

Fleetwood Owners Club
Freightliner Owners Club
Join Date: Jan 2000
Location: Silver Springs, FL. USA
Posts: 16,418
The water heaters made in the last dozen years all have a fixed 140 degree thermostat. For some Atwood heater models there is an adjustable thermostat available - here is one of several sources:
ATWOOD MOBILE PRODUCTS 93105 Adjustable Electronic Thermostat : Amazon.com : Automotive

If you are getting scorching hot water from the tap, your water heater is probably very near by. Others have the opposite problem - the heater is far away and the water cools off a lot by the time it reaches the shower or faucet.

The best solution has already been suggested by others - use a faucet that mixes in cold water to a single tap. Better yet, a single lever faucet that lets you easily adjust on the fly.
Gary Brinck
2004 American Tradition; 2014 Buick LaCRosse
Homebase in the Ocala Nat'l Forest near Ocala, FL
Gary RVRoamer is offline   Reply With Quote
Old 12-11-2013, 08:14 PM   #8
Moderator Emeritus
TXiceman's Avatar

Vintage RV Owners Club
Texas Boomers Club
Oklahoma Boomers Club
Ford Super Duty Owner
Join Date: Aug 2000
Location: Full Time, TX Home Base
Posts: 17,139
Blog Entries: 21
With a limited amount of hot water, not like your 30 to 50 gallon water heater at home, you want the water pretty hot and mix with cold for the desired temperature.

As per the post above, you can add an after market adjustable temperature switch.

Amateur Radio Operator (KE5DFR)|Full-Time! - 2012 6.7L Ford Crew Cab Dually -2013 HitchHiker Champagne 38RLRSB - Travel with one Standard Schnauzer and one small Timneh African Gray Parrot
TXiceman is offline   Reply With Quote
Old 12-12-2013, 05:04 PM   #9
Senior Member
Join Date: Feb 2013
Location: Graham, WA
Posts: 362
Aqua-hot systems have an adjustable mixing valve to control hot water temp.
2006 Gulfstream Friendship G7, Cat C7 and Allison 6 spd
Honda VTX and Crusier Lift on the back
Blue Ox Aladdin, Brake Buddy, 2014 Chevy Equinox toad
Dennis4809 is offline   Reply With Quote
Old 12-12-2013, 05:28 PM   #10
Senior Member
Ray,IN's Avatar
Join Date: Aug 2001
Location: North America somewhere
Posts: 12,300
How to replace an RV water heater thermostat, video by Trailer Life.

2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member."We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert theConstitution. "Abraham Lincoln"
Ray,IN is offline   Reply With Quote

heater, water, water heater

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Virginia Campgrounds

Reviews provided by

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 02:41 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.