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

Thread Tools Search this Thread Display Modes
Old 01-15-2007, 03:04 PM   #1
1 Rivet Member
AZtraveler's Avatar
2006 22' Interstate
Cave Creek , Arizona
Join Date: May 2006
Posts: 11
12 Volt tank heater on 2006 Interstate

I have an Interstate with separate black and grey water holding tanks (rear sleeper model). Airstreams literature lists 12 Volt Heaters for both, but all that I can see is some kind of a coil between them. Can anyone tell me how much good this will do in moderately freezing temperatures (+15 degrees for maybe six hours or so)? Everything I find on the internet looks like a heating pad that attaches to the bottom.

Larry C. in AZ
Attached Thumbnails
Click image for larger version

Name:	TankHeater?.jpg
Views:	145
Size:	90.8 KB
ID:	30869  
AZtraveler is offline   Reply With Quote
Old 01-17-2007, 05:43 PM   #2
Rivet Master
Skater's Avatar
1995 30' Excella
Bowie , Maryland
Join Date: Apr 2005
Posts: 2,344
I wouldn't worry about it, not for 6 hours, even if you left the coil off.

We had a recent discussion in the B190 mailing list on a similar topic. From what I gathered from that discussion, I don't think you have anything to worry about - 6 hours is not a long time by any means. It's when you get into 18 hours or 24 hours that things start getting more interesting.

If it does worry you, you can always buy a bottle of RV antifreeze and dump it in the tanks.

I've camped in my B190 in winter-like conditions - once in Pennsylvania over Thanksgiving, when we actually had some snow (maybe an inch). It actually got pretty cold at night, definitely below freezing, but I didn't do anything special to my tanks and had no problems.
1995 Airstream Classic 30' Excella 1000
2014 Ram 2500 Crew Cab with Cummins 6.7L Diesel

Sold but not forgotten: 1991 Airstream B190
Sold: 2006 F-250 6.0L Powerstroke Supercab
Skater is offline   Reply With Quote
Old 01-17-2007, 06:40 PM   #3
3 Rivet Member
Currently Looking...
2005 22' Interstate
Afton , Virginia
Join Date: Sep 2005
Posts: 226
My impression of your foto is that the coil is associated with the propane system. I would think that if it is a waste tank heater, it would need to be attached to the tanks in some fashion. My 2005 Interstate has a 12 volt heater on the black water tank, and also has some mysterious coils near the propane tank.
herrgirdner is offline   Reply With Quote
Old 01-18-2007, 05:54 PM   #4
1 Rivet Member
AZtraveler's Avatar
2006 22' Interstate
Cave Creek , Arizona
Join Date: May 2006
Posts: 11
Tank Heater update

I received a reply from Airstream Support stating that the tanks do have heaters attached, but they are not visable. We've spent about a week camping in sub-freezing overnight temperatures. I drained & blew out the water lines but didn't add anti-freeze to the tanks. Lots of homeowners have had broken pipes, but we seem to be doing fine.

Thanks for the input.

Larry C. in AZ
AZtraveler is offline   Reply With Quote

12 volt

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Water Heater Craig 1978- 1979 Excella 500 7 10-01-2007 05:16 PM
'78 Argosy central heater motor home edmatlock Furnaces, Heaters, Fireplaces & Air Conditioning 5 11-22-2002 10:57 PM
Replacing Black Water Tank Tamara Waste Systems, Tanks & Totes 15 06-18-2002 10:45 PM
Tank sizes in '85 Soverign 25 foot j54mark Waste Systems, Tanks & Totes 5 06-16-2002 08:03 AM
Size of black water tank glyoungca Waste Systems, Tanks & Totes 3 06-10-2002 04:17 PM

Featured Campgrounds

Reviews provided by


This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.

All times are GMT -6. The time now is 05:30 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.