RV News RVBusiness 2021 Top 10 RVs of the Year, plus 56 additional debuts and must-see units → ×

Go Back   Thor Forums > Thor Tech Forums > Motorhome Tech Topics
Click Here to Login
Thread Tools Display Modes
Old 08-24-2017, 03:57 AM   #1
Senior Member
Brand: Still Looking
Model: Newmar Bay Star Sport 300
State: Alabama
Posts: 3,018
THOR #6826
Draining hot water tank?

Do you all drain your hot water tank after every trip? I've been leaving it full if we will be using it again in a few weeks but draining it if it will be stored longer than that. Can't get all the water out anyway so I'm not sure there's any point to draining prior to winterizing. Thank you.

Pete'sMH is offline   Reply With Quote
Old 08-24-2017, 06:38 AM   #2
Senior Member
Brand: Thor Motor Coach
Model: Gemini 24TX (Formerly)
State: California
Posts: 1,431
THOR #5821
No need to drain it, but once a year remove and replace the anode rod. If you do that you will likely get many years of trouble free service from it.

Laco is offline   Reply With Quote
Old 08-24-2017, 10:27 AM   #3
Senior Member
SuperD's Avatar
Brand: Thor Motor Coach
Model: 2017 Windsport 29M
State: Indiana
Posts: 3,692
THOR #5196
Only time you need to drain the tank is for winterizing. You won't get all the water out but there will only be a very slight amount in the bottom of the tank. You absolutely need to drain for the winter to prevent tank damage, what little water is left will have room to expand so it won't hurt anything when it freezes.
USMC Veteran
FMCA 101070S

Dave & Myra
One day your life will flash before your eyes,
make sure it's worth watching!
SuperD is offline   Reply With Quote
Old 08-24-2017, 12:14 PM   #4
Senior Member
Ron1Z's Avatar
Brand: Thor Motor Coach
Model: Windsport 29m
State: Florida
Posts: 401
THOR #8069
After I drain my water system and pull the plug on the hot water tank, I take the MH for a short ride. When you make a turn look in the mirror you would be surprised how much water is coming out.
Ron1Z is offline   Reply With Quote
Old 08-24-2017, 07:03 PM   #5
Senior Member
Brand: Thor Motor Coach
Model: 2013 31L
State: Florida
Posts: 1,989
THOR #908
for what it's worth....
my outdoor shower is located on a level below my water heater.
To drain, I open the hot water side on that shower, then crack open the TPRV to vent.
Since the hot discharge pipe is located at the same level as the drain plug, it's more or less getting the same result in my thinking.

No I don't drain it every time.

About the need to drain.....I did come back to my campsite once to find TH TPRV dripping. Well I learned form that the the water heater needs an air space. Over time with use, that air space gets filled with water, so once in a while you need to burp the heater (drain it a bit) to let some air in otherwise the expansion form heating will cause it to drip
blw2 is offline   Reply With Quote

Thread Tools
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

» Featured Campgrounds

Reviews provided by


This website is not affiliated with or endorsed by Thor Industries or any of its affiliates. This is an independent, unofficial site.

All times are GMT. The time now is 06:27 AM.

Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0 PL2