Reply
 
Thread Tools Search this Thread Display Modes
 
Old 09-12-2011, 06:35 PM   #1
Rivet Master
 
1981 31' Excella II
New Market , Alabama
Join Date: Sep 2011
Posts: 4,283
What is the life of an OEM furnace?

I was wondering what the life of an OEM furnace is? How long do they last and how so you know when it is time to change it out?

Perry
__________________

__________________
perryg114 is online now   Reply With Quote
Old 09-12-2011, 06:52 PM   #2
Rivet Master
Airstream Dealer
 
Inland RV Center, In's Avatar
 
Corona , California
Join Date: Feb 2002
Posts: 15,501
Images: 1
Quote:
Originally Posted by perryg114 View Post
I was wondering what the life of an OEM furnace is? How long do they last and how so you know when it is time to change it out?

Perry
Perry.

That sort of depends on how much it was used.

Typically, when the motor fails, that's a good sign to replace the furnace.

But again, a motor can fail prematurely.

Another sign, would be when the furnace is remove, for a complete and proper cleaning, what is the condition of the combustion chamber?

Andy
__________________

__________________
Andy Rogozinski
Inland RV Center
Corona, CA
Inland RV Center, In is offline   Reply With Quote
Old 09-12-2011, 07:18 PM   #3
Moderator
 
CanoeStream's Avatar

 
2006 25' Safari FB SE
St. Cloud , Minnesota
Join Date: Aug 2003
Posts: 13,281
Images: 19
Blog Entries: 3
perryg114 -- what year, length & model Airstream are we talking here?
__________________
Bob

5 meter Langford Nahanni

CanoeStream is offline   Reply With Quote
Old 09-12-2011, 07:41 PM   #4
Rivet Master
 
1981 31' Excella II
New Market , Alabama
Join Date: Sep 2011
Posts: 4,283
81, 31ft, Excella II, center bath.

Perry
__________________
perryg114 is online now   Reply With Quote
Old 09-12-2011, 08:34 PM   #5
Rivet Master
 
68 TWind's Avatar
 
1968 24' Tradewind
Oxford, , Mississippi
Join Date: May 2009
Posts: 1,130
Like Andy said, lots of variables but even if the unit looks OK pay close attention to the heat exchanger. My old Trade Wind furnace worked but I let a buddy in the HVAC business look at it just be sure and fix a small micro switch. He found a hole internally in the heat exchanger. That would have allowed combustion gases to mix with warm cabin air-a potentially deadly combination. If in doubt, change it out.
__________________
__________________
Bruce & Rachel
__________________
68 Trade Wind
2001 Toyota Tundra
TAC-MS-3
KF5IMA
68 TWind is offline   Reply With Quote
Old 09-12-2011, 10:53 PM   #6
Rivet Master
 
1974 Argosy 20
2014 20' Flying Cloud
Kooskia , Idaho
Join Date: Jul 2009
Posts: 2,787
30 years is a long time for any RV appliance like a heater. Often they just get unreliable, or they have a pilot light ignition system that is a PITA to use. A repair is often almost as costly as a new unit. On my '71 Caravel I was getting headaches when using the furnace. I changed it out for a spark ignition one and the headaches and much of the condensation on the windows went away. When I tore it apart I found it had a rusted through combustion chamber, very dangerous.

There is no real answer to the question, but in general I would change one out at about 20 years just because, and due to the possible dangers of a bad one.
__________________
idroba is online now   Reply With Quote
Old 09-13-2011, 09:06 AM   #7
Rivet Master
 
1981 31' Excella II
New Market , Alabama
Join Date: Sep 2011
Posts: 4,283
Well I may pull it out and inspect everything before using it. I hope I can get it out without having to pull the kitchen counter.

Perry
__________________
perryg114 is online now   Reply With Quote
Old 09-13-2011, 11:12 AM   #8
3 Rivet Member
 
pgr32e's Avatar
 
1974 27' Overlander
Sault ste Marie , Ontario
Join Date: Jun 2004
Posts: 163
Images: 6
This is what I found when I pulled the front off mine last fall, joint failure and corrosion. Furnace was 37 years old......Phil.
Attached Thumbnails
Click image for larger version

Name:	_DSC1181.jpg
Views:	57
Size:	51.9 KB
ID:	140094  
__________________
pgr32e is offline   Reply With Quote
Old 09-13-2011, 06:07 PM   #9
Rivet Master
 
1974 Argosy 20
2014 20' Flying Cloud
Kooskia , Idaho
Join Date: Jul 2009
Posts: 2,787
A second post from me on the subject. I just now pulled the original furnace on my 22' 1975 Argosy. It did light, run, and heat, but I was not confident of it's condition. Good thing, because when I got it out I found that previous owner(s) had "repaired" and re installed it with great gobs of silicone seal, the wiring had 4 splices in each of the 4 wires, the Suburban recall on the combustion air tube had never been done and the cracks were "sealed" with silicone goop, and I probably dumped 2 cups of rust flakes out of the lighting and inspection hole. The furnace was unsafe, and the PO's repairs were done improperly. I had a replacement furnace of the same age, but of known good condition which I put back in for now.

So, in addition to the age and condition of the furnace, what the previous owner(s) have done is also an issue to be considered. Was it done right, and safe?

I had a cousin and his wife and baby daughter all killed in a (non RV) CO related furnace accident. They bought a cottage in the fall, used it for the first time and were never seen alive again. One PO of the cottage installed a furnace without venting it properly, but got away with it. The second owner made further modifications on the cottage which amplified the original problem, but never used the furnace. The third owner, my cousin, paid for it with his life and his family's life. I am not trying to be over dramatic here, but sometimes safety is a matter of little things going right, or wrong, and what someone else did to repair things.

Furnaces get old, and can need to be replaced even when they seem to be functioning. Heads up.
__________________
idroba is online now   Reply With Quote
Old 09-13-2011, 06:15 PM   #10
Rivet Master
 
1981 31' Excella II
New Market , Alabama
Join Date: Sep 2011
Posts: 4,283
Good reason for a CO detector as well.

Perry
__________________
perryg114 is online now   Reply With Quote
Old 09-23-2011, 09:39 PM   #11
3 Rivet Member
 
1969 27' Overlander
Albuquerque , New Mexico
Join Date: Sep 2011
Posts: 168
What replacement furnace to use?

I'd like to replace my Surburban furnace from my '69 Overlander.
What furnace is compatible, and will fit under the sink, etc?
Any brands, models recommended?
__________________
edglenn is offline   Reply With Quote
Old 09-23-2011, 09:48 PM   #12
Rivet Master
Airstream Dealer
 
Inland RV Center, In's Avatar
 
Corona , California
Join Date: Feb 2002
Posts: 15,501
Images: 1
Quote:
Originally Posted by edglenn View Post
I'd like to replace my Surburban furnace from my '69 Overlander.
What furnace is compatible, and will fit under the sink, etc?
Any brands, models recommended?
The same brand works great, and is compatible with the present Suburban furnace.

Andy
__________________
Andy Rogozinski
Inland RV Center
Corona, CA
Inland RV Center, In is offline   Reply With Quote
Old 09-23-2011, 10:51 PM   #13
Rivet Master
 
1974 Argosy 20
2014 20' Flying Cloud
Kooskia , Idaho
Join Date: Jul 2009
Posts: 2,787
Quote:
Originally Posted by edglenn View Post
I'd like to replace my Surburban furnace from my '69 Overlander.
What furnace is compatible, and will fit under the sink, etc?
Any brands, models recommended?
Most new Suburban NT series furnaces are compatible with the older one you already have. The holes through the wall may even be in the same place. A little research will tell you the specifics. Check the Btuh rating of the old one and look for the same in the new one. Probably will fit with little alteration.
__________________
idroba is online now   Reply With Quote
Old 09-24-2011, 08:02 AM   #14
3 Rivet Member
 
1969 27' Overlander
Albuquerque , New Mexico
Join Date: Sep 2011
Posts: 168
OK. Thanks.
I looked at the Suburban NT 30's and NT 40's on EBAY.
I didn't see any info on my exisitng unit for the BTU's.
Is there a rule of thumb for BTU range?
It's a 27' Overlander. Is 30,000 BTU's too much?
__________________

__________________
edglenn is offline   Reply With Quote
Reply


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
Need advice on furnace. SilverRanger Furnaces, Heaters, Fireplaces & Air Conditioning 5 05-28-2011 03:47 PM
Suburban furnace replacement for '66 Trade Wind Ben in MT Furnaces, Heaters, Fireplaces & Air Conditioning 0 05-17-2011 08:12 PM
Stove & furnace for Bambi II beckybillrae General Appliance Topics 4 03-26-2011 08:23 PM
Tire Life Cracker Tires 17 02-27-2011 02:15 PM
New Electric Service - YAY!!! or Life is Better When Everything WORKS!!! bugnot1 Winter Living 6 01-23-2011 10:32 PM


Airstream Classifieds



Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

RV & Travel Trailer Communities

Our RV & Travel Trailer sites encompasses virtually all types of Recreational Vehicles, from brand-specific to general RV communities.

» More about our RV Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities


Copyright 2002-2012 Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 10:13 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.

Airstream News Delivered to your Email!

Stay up-to-date with Airstream news in your inbox!

unsusbcribe at anytime with one click

Close [X]