Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
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 11-29-2015, 05:55 AM   #15
Senior Member
Join Date: Jul 2015
Location: Watertown NY USA
Posts: 1,494
I'd be concerned about putting some heat into the MH but not enough to keep it moisture free. Are places like the insulation between the ceiling and roof going to be warm enough to remain dry or with the temperature variation going to be moist? The same goes for the flooring, basement storage compartments and under the dash and instrument panel.
I realize we have a variation in temperatures all the time but a few minutes of warm air in and then a cool down as the house furnace cycles on and off makes me wonder ????
If I were to try what you have thought about I would at least put a de-humidifier in the MH to see how much water it collects.
Gotta love a pessimist Huh?

2002 Fleetwood Storm 30H on Workhorse P32 chassis 8.1 gas.
LETMGROW 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 11-29-2015, 06:51 PM   #16
Senior Member
LSC9901's Avatar
Winnebago Owners Club
Ford Super Duty Owner
Join Date: Nov 2010
Posts: 990
First off I am curious as to why you want to introduce heat to it to begin with ? It seems to me that the moisture you introduce will create more of a problem than the cold. In looking at your average winter temps you generally do not go below freezing. If you aren't actually using the MH it just seems like you could be inviting issues.

If you have friends who make you laugh, spend lots of time with them.
2008 Winnebago Sightseer 30B

LSC9901 is offline   Reply With Quote
Old 11-29-2015, 08:08 PM   #17
Monaco Owners Club
Join Date: Apr 2015
Posts: 82
Thumbs up Heating RV from House with waste heat.

Here is another thought. Depending how accessible your furnace (heater) vent is you could place a heat exchanger on the vent and capture the waste heat off of your furnace. Good accessibility, some insulated ducting, an exhaust fan blowing thru the heat exchanger, a couple Klixons for temp control and most of the problems mentioned like return air are no longer factors. Depending on where heating units are located some do vent close to ground level ready made for waste heat capture.
holycow is offline   Reply With Quote
Old 11-29-2015, 10:48 PM   #18
Senior Member
alpha99's Avatar
Winnebago Owners Club
Join Date: Apr 2013
Posts: 1,052
Has anyone hooked up their home forced air heat to a MH?

Why??? It's perfectly happy being stored in the colder temps if winterized properly.
alpha99 is offline   Reply With Quote
Old 11-30-2015, 05:29 AM   #19
Senior Member
mojoracing's Avatar
Fleetwood Owners Club
Ford Super Duty Owner
Join Date: Oct 2013
Location: northern IL
Posts: 2,557
If you have heated storage compartments like mine, you could potentially hook up to those by putting a capped opening similar to those used for your sewage hose coming out the bottom of a compartment and run some round duct into the compartment and up to the duct that heats the compartment. I have two so I could use one for a return possibly.
2014 Fleetwood Bounder 35k
mojoracing is offline   Reply With Quote
Old 11-30-2015, 05:45 AM   #20
Senior Member
Easyrider's Avatar

Workhorse Chassis Owner
Join Date: Dec 2004
Location: Baraboo, Wisconsin
Posts: 1,634
As some have already stated, I would worry about condensation. The heated air from your house will have some moisture that may condense when blown into your cooler motorhome and cause excessive condensation problems. It may start "raining" inside your motorhome!
Steve & Nancy
2005 Itasca Sunrise 33', W20 Chassis, Ultrapower, Henderson Trac Bar
2012 Chevy Captiva Sport AWD, ReadyBrute Elite Tow Bar, Blue Ox Base Plate, Protect-A-Tow
Easyrider is offline   Reply With Quote
Old 11-30-2015, 07:19 AM   #21
Senior Member
Join Date: Feb 2009
Location: Colorado
Posts: 366
You need to heat the basement so the water lines don't freeze and some guys suggest a light bulb to keep that area heated. MY Dutch Start heats the outside water connection compartment with furnace heat and so you need to keep that area from freezing also!
2002 Dutchstar, Spartan Chassis, 350 Cummins, 2012 Explorer.
Snomas1 is offline   Reply With Quote
Old 11-30-2015, 07:51 AM   #22
Senior Member
Ray,IN's Avatar
Join Date: Aug 2001
Location: North America somewhere
Posts: 13,905
Originally Posted by Easyrider View Post
As some have already stated, I would worry about condensation. The heated air from your house will have some moisture that may condense when blown into your cooler motorhome and cause excessive condensation problems. It may start "raining" inside your motorhome!
I agree with these concerns. We all know what happens when heating the RV in cool/cold weather, moisture condenses on windows, in closed cabinets, etc.
Then there is the present dryer water trap in the garage that introduces moisture into the air.
2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member,FMCA."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 the Constitution. "Abraham Lincoln"
Ray,IN is offline   Reply With Quote
Old 12-09-2015, 09:45 AM   #23
Senior Rexhall Pilot
John USA's Avatar

Rexhall Owners Group
Join Date: Jun 2015
Location: East of Tacoma, WA
Posts: 354
Blog Entries: 18
As was mentioned above, we seldom get down to freezing, but were approaching a freezing spell when I made the post. I wanted to get my head around various options. Had not thought about introducing moisture into the RV via home heat.

In the end, I turned on the RV furnace and set it to 45 degrees. I also put in a small floor heater with fan. I had to travel on business during the cold snap, and wanted to make sure nothing froze. I did not winterize, as the wife and I are hoping to get away a couple times this winter, and utilize the onboard systems.

I have limited water lines in the basement area, but did not consider how to keep those above freezing. A small light bulb just might be the trick.

Appreciate all the feedback and advice, great thread.
1996 Rexhall xl3400
Ford 460
Tag axle
John USA is offline   Reply With Quote
Old 12-09-2015, 09:55 AM   #24
Senior Member
Join Date: Sep 2013
Posts: 596
Is having your hvac in the garage code compliant ? In most jurisdictions it isn't as a vehicle running in the garage could cause deadly fumes to enter the house, whether the hvac is running or not.

In boats in the Pacific Northwest all we needed was a 100 Watt light bulb to cut down humidity in the winter , works even when temps are just below freezing.

An alternative to using antifreeze is blowing out the water lines with 50psi compressed air, that way you're always almost ready to go.

As for the comment regarding exhausting the dryer back into the air returns, that is a very bad idea. Over time lint will build up in the ducts and the furnace and increases the fire hazard. Depending on your climate this can also cause severe mold problems in places you can't see. It was popular practise in the 70s but now most building codes and fire codes require the dryer to be vented outdoors.

marcham is offline   Reply With Quote


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
No dash heat just cold air JandMinVA Tiffin Motorhomes Owners Forum 8 10-20-2015 05:59 AM
An Air Force One Story -- long wil01 Toads and Motorhome Related Towing 3 02-19-2015 04:45 PM
2007 Mountain Air At Home Scottybdivin Newmar Owner's Forum 14 12-28-2014 03:28 PM
Outlaw heater and air both coming on at same time Alaskabev Thor Industries Owner's Forum 6 09-16-2014 06:15 PM
Low Air presure - Park Brake iamduane Alpine Coach Owner's Forum 15 05-07-2014 04:49 PM

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 11:43 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.