Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×

Thread Tools Display Modes
Old 06-22-2020, 10:54 AM   #1
New Member's Avatar
Join Date: Aug 2018
Location: South Dakota
Posts: 4
Question Sprinter 12volt Hot water

Iím looking for a 12 volt water heater, like the Duoetta Mk2, but One that uses 120, not 240v shore power. Any suggestions?
__________________ is offline   Reply With Quote
Old 06-22-2020, 03:32 PM   #2
Platinum Member
Join Date: Jan 2015
Posts: 367

Assuming your Class B already has a 120v to 12v converter or inverter/charger then just wire the Duoetta via its 12volt supply only. When driving it will operate off the vehicle 12v supply and when parked on shore power the converter or inverter/charger will supply the necessary 12v power.

For a higher quality marine/RV 12v water heater Whale offers a 3 gal, 12v water heater with full winter drain capability and replaceable anodes:

rockymtnb is offline   Reply With Quote
Old 06-25-2020, 07:40 PM   #3
Platinum Member
IdleUp's Avatar
Join Date: Feb 2019
Location: Blairsville Ga
Posts: 174

Originally Posted by View Post
I’m looking for a 12 volt water heater, like the Duoetta Mk2, but One that uses 120, not 240v shore power. Any suggestions?
Another possibility which uses no 12 volt power or propane, is one that operates on the engines coolant. The design is straight forward, it uses a heat exchanger to heat water in the tank sort of like your heater circuit. After you turn off the engine you'll have 6 gallons of heated water. If you need additional hot water you can let the engine idle for a few minutes and it re-heats the tank again. My Europremier RV back in 94 was equipped with one of these heaters. After we stopped for the night we always had hot water without using propane. It's a great "free Heat" design!

I would check with some marine supply houses. These coolant heaters are popular for marine installations, some have a 120 volt element for when your plugged in.

Stay Safe Mike
Attached Images
File Type: png wheater.png (622.9 KB, 1 views)
IdleUp is offline   Reply With Quote

12v water heater, sprinter 144

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

Powered by vBadvanced CMPS v3.2.3

All times are GMT. The time now is 09:37 PM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2021, vBulletin Solutions, Inc.