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Old 10-02-2015, 09:15 PM   #21
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Yes, yes, yes. I once observed a bird going in and out of a furnace vent carrying sticks and twigs for a nest. I told the owner. Can you imagine the fire when he turned the furnace on that winter!

This exact scenario happened to us 2 years ago. We didn't camp much that year until fall. We arrived at the site and set up. That afternoon it got chili and we don't have any other means of heat than the furnace. So I turned it on and it made a scraping noise and then stopped and hummed. Clearly there was a problem.
So after removing the unit from the inside, I dismantled the unit and found a nest of sticks and twigs. We have alot of humming birds around here so I assumed they were the cause. I cleaned it all out and it worked fine that night.
Later that winter I bought the round screens which also came with the tool to install the retaining springs. It's a must have for me.
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Old 10-02-2015, 10:51 PM   #22
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I've been in the appliance repair business for 40 years. Don't put them on......I like the money I've charged.....a lot more than the price of the screens. All seriousness set aside though,,,,,you definitely SHOULD get them. It is very expensive to clean out the mess,,,,especially the furnaces.
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Old 10-02-2015, 11:10 PM   #23
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Cheap alternative

I usually buy some sink strainers at the $ store to put over the furnace vents. They work just as well as the pricey ones they sell.

Do you need them? Yes. Once we were camping and it was freezing. My sister's furnace wouldn't blow because a mud dauber nest was blocking the fan. My husband was able to pry it loose and get it out with a coat hanger without taking the whole furnace apart. We were lucky! She covered her furnace vents the next day!
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Old 10-03-2015, 12:59 AM   #24
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The screens work well. If you don't use them, you run the risk of fire when wasps build nests in your furnace piping. Don't try to save money by not using the screens or you could pay with the deductible or even with severe burns or death.
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Old 10-03-2015, 08:57 AM   #25
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I just used regular window screen cut to the size needed and used a hot glue gun to attach them.
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Old 10-03-2015, 09:30 AM   #26
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Cpaulsen,,,,that window screen MIGHT be to restrictive with the weave and cause air intake and exhaust problems. But if it's not really hot at the exhaust and shutting off and on, it shouldn't cause trouble.
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Old 10-03-2015, 11:05 AM   #27
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I've been in the appliance repair business for 40 years. Don't put them on......I like the money I've charged.....a lot more than the price of the screens. All seriousness set aside though,,,,,you definitely SHOULD get them. It is very expensive to clean out the mess,,,,especially the furnaces.
These are the ones I use for the furnace.

Amazon.com: Camco 42141 Flying Insect Screen - FUR 200 - 2 Pack: Automotive

They make different ones for different furnaces. Are stainless so should last forever and are not that expensive. As they say, cheap insurance.

Jim
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Old 10-03-2015, 11:39 AM   #28
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Put them on every opening on our rig the first season we had it. The stink bugs are horrendous here in SW PA. It's amazing what they can get into. We go out of state a lot and there are some places that are teaming with bugs. A locust swarm in Iowa was something I had never seen before. Took a while to clean that out of the radiator and engine compartment. I think of covers as cheap insurance. When I do pull covers off, I don't find anything to clean out.
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Old 10-03-2015, 11:59 AM   #29
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Have one on furnace but removed the hot water tank cover. The Atwood heater flamed up and burnt the circuit board, wire harness, and spark device. I believe a restriction of air flow caused the problem. After repair the unit works great with no screen installed. Cost me alot of $ to learn that lesson.
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Old 10-03-2015, 12:34 PM   #30
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We have it on our fridge vent, hot water heater and furnace. Cheap insurance.


Happy Camping!

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X 2 Have had them on every camper I've owned. Later RJD
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