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Old 03-24-2016, 06:00 PM   #21
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Here’s a quote from page 16 of my Suburban furnace owners’ manual.

Return Air - The cabinet that the furnace may be installed in will have louvers or openings for the return air back to the furnace. When the furnace is installed, it is imperative that the return air louvers on the furnace cabinet opening are not obstructed.
Insufficient return air will cause the furnace to overheat and cycle on limit.”

Whether or not you install a filter is no skin off my nose. For all I know you might have a completely different RV furnace than what I have. I’m just suggesting that folks read the manuals that come with the appliances.


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Old 03-24-2016, 06:21 PM   #22
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Originally Posted by wahoonc View Post
Yes I DID read the manual. The only thing is says is that it needs 80 square inches of return air space. It doesn't say jack about whether you can use a filter or not. I would much rather clean pet hair out of a filter than the freaking blower box. FWIW yes FR does build to a price point and buys less expensive things to keep the profits up and the costs down. Many of the appliances are built to specifications provided by the RV companies. They can ask for whatever they want and it will be provided at a price. Yes the appliance manufacturers build things and sell them to the RV assemblers. I have worked in a variety of industries and cost vs profits is a primary driver in just about everything.

Also I have taken apart my fair share of furnaces in houses as well as RV's and while there are some differences there are more similarities than not.

Well when we see the fire in the camp ground and it is a rv guess the filter may have cause it. Good luck on the install. As said if it was meant to have one the manufacture would have provided it. Later RJD

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Old 03-25-2016, 06:15 AM   #23
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Originally Posted by aceinspp View Post
Well when we see the fire in the camp ground and it is a rv guess the filter may have cause it. Good luck on the install. As said if it was meant to have one the manufacture would have provided it. Later RJD
Won't be my unit burning up. Most RV fires I have seen were due to fridges or electrical issues. Putting a light filter on the furnace IS NOT going to cause overheating or a fire. Based on your "manufacturer provided theory" I guess I don't need a EMS/Surge protector or water pressure regulator either. Both of which I use. I have seen what happens in both cases. Interestingly enough there are quite a few manufacturers that do provide both, but they are on the higher end, more expensive units.


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