No Hot Water Pressure In My RV - What Do I Do?

by Ed
(Lakeside, Ca.)

Question: I have a 2007 Outback 230RS with a 6 gallon Atwood hot water heater. All of a sudden there is no water pressure on the hot side at all faucets. The cold side works fine and has ample pressure. I drained and flushed out the hot water heater a couple of times with some calcium deposits flushed out. Still no pressure or water flow from the hot side. Heater seems to work fine but no water pressure. The hot water outlet on the rear of the tank seems to be unreachable in the compartment. I'm at a loss. Thank you.



Robbie: I'm sure if you look on the rear of your water heater you will see a check-valve where either the top and/or bottom waterline connections are. Cold water goes in the bottom and hot comes out the top. If you remove the valve (or valves) and find it's full of calcium deposits, I suggest you buy a new check valve from a local RV store. You can remove it completely if you'd like as it only prevents back pressure and replace with a 1/2" by 2" coupler from any hardware store. Using a coupler will also limit the chance of you having to replace it again in the future because of a calcium build up.

Thanks for the Question Good Luck,
Robbie

Comments for No Hot Water Pressure In My RV - What Do I Do?

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Jan 25, 2016
 Bypass valve !
by: eloy escalante sr

Bypass valve!
Thanks v much for suggestions ! Mine has, a,, valve for flow on one position and bypass on the other position.
Feb 02, 2016
 low hot water prressure
by: Anonymous

Thank you very much. Took gut`s out of check valve on hot water side of tank.Hot water pressure better than ever.Booking marking your web-site. Snow bird Mike. Currently in Naples Fla.
May 29, 2016
 gutless
by: satisfied

trouble shot every possible problem thinking there was an obstruction in one of the lines. Read this forum, and decided by process of elimination, I needed to go here before I ordered a new camper that came with new parts ( lol ). Found the check valve ( plastic part) had broken off one end. Took complete assembly out including the spring, applied new tape to threads, and reinstalled. Pressure is back where it should be if not better. Love the forum, and thanks for all the postings.
May 15, 2017
 Fix your hot water check valve. NEW
by: Terry

I just had the same problem with my hot water not flowing from my heater tank. I removed the brass check valve at the exit from the tank (at the top), saw that it was crusty with deposits causing the plastic stopper to jam. So I put the valve in a coffee cup and filled it with vinegar and the deposits dissolved in a couple minutes. It works like new so I'm reinstalling it.

I ordered a new valve anyway just in case and I found out my anode was pretty much gone so I ordered a new one also. But less than an hour's work and a cup of vinegar and I'm back in business.
May 15, 2017
 Fix your hot water check valve. NEW
by: Terry

I just had the same problem with my hot water not flowing from my heater tank. I removed the brass check valve at the exit from the tank (at the top), saw that it was crusty with deposits causing the plastic stopper to jam. So I put the valve in a coffee cup and filled it with vinegar and the deposits dissolved in a couple minutes. It works like new so I'm reinstalling it.

I ordered a new valve anyway just in case and I found out my anode was pretty much gone so I ordered a new one also. But less than an hour's work and a cup of vinegar and I'm back in business.
May 31, 2017
 Can't find the check valves NEW
by: Jones

I have pulled off the only connectors that I can find that could possibly be the check valves and none of them are. I am experiencing the exact problem described previously and checked everything I can find but no valve that I can find seems to exist. Any other ideas what would be causing this?
Jul 07, 2017
 west hills,cc. NEW
by: georgeAnonymous

UI have the problem with very small water flow .It is still hot so the heater is working. I changed the anode which was totality gone. But folw seems to be partly blocked. To get to the check valve do you remove the heater out of the coachman Mirada 2004 model atwood model g6a8e ?GS
May 30, 2018
 also no hot water pressure cold is fine NEW
by: Anonymous

I removed the check valve and cleaned it also replaced one of the plastic inline components seems to be working better. What is a anode? I have seen a few posts about it being gone or corroded Sorry I am just a woman and don't know all the techy terminology Any help is appreciated. Thanks
Jul 06, 2019
 To Anonymous Woman asking about anode.
by: PeterW

The water heater anode rod is located on the lower part of the side of your water heater and the
screw-in end of it is visible. It's important to check it once a year, because it protects your water heater. Hot water has a corrosive action that can eat away at the interior of the water heater. Think of the anode rod as a sacrificial piece of metal. Instead of the water corroding the interior of your heater, the magnesium anode rod corrodes instead. It will happen faster if water is harder, and, since Rvers travel and usually aren't sure if local RV parks have hard or soft water, checking it once a year is a good practice. If it's more than half corroded, replace it. Write down the make and model number of your water heater (ie Suburban 6xxxxx) and type that into the Amazon search bar followed with "anode bar". The original manufacturer ones sell for $10 - 15 and generic ones for a few bucks less. I usually go with the OEM ones because the cost difference isn't that much. Here's a link that shows you in detail: https://www.trippinbrehenys.com/2019/02/05/how-to-replace-the-anode-rod-in-your-rvs-water-heater/

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Robbie Warford, San Diego RV Repair

Hi, I'm Robbie. Welcome to Money-Saving-RV-Repair.com!

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But I also love empowering RVers with the knowledge they need to make the right decision on repairs, or to make the fix themselves--and that, my friend, is the reason for this website. I hope you enjoy.

Or, learn more about me, my RV service practice, & this website here.