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Old 08-23-2019, 11:18 PM   #1
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Exterior Exhaust Vent Bug Screens

Has anyone placed bug screens over their exterior refrigerator, furnace, and hot water heater exhaust vents? Typically sold at RV stores. If so, how do you like them?
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Old 08-24-2019, 05:20 AM   #2
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Exterior Exhaust Vent Bug Screens

I’ve put them on my fridge vent and am looking to do the furnace and hot water heater. When I replaced my Norcold for a residential fridge I found a wasp nest in the back of it.
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Old 08-24-2019, 05:39 AM   #3
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Our Norcold specifically warns against putting screens on the exterior vents. It reduces air flow I guess. I read a trick to stop wasps on this forum years ago that works well. Just put a fresh cat flea collar in the compartment every season. When I did it a very angry wasp came out of the compartment as I was replacing the lower cover. I have not had a wasp since. Some say dog flea collars work as well but I have not tried it. I can say for sure that cat flea collars work i change it twice a year.
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Old 08-24-2019, 07:58 AM   #4
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Yes, but only on my furnace vents. I have used them for years and they work. Without them I’ve had issues including a small bird nest.

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Old 08-24-2019, 08:17 AM   #5
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I use the screen over the furnace vent that you referred to, nothing on the hot water tank vent, and used strips of vinyl screen & gorilla tape on the inside of the refer intake vent.
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Old 08-24-2019, 08:24 AM   #6
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You might want to take a look at how much even fairly large mesh screens will restrict air flow. It's probably a whole lot more than you think. I know that it will void most warranties. Your coach, your call.
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Old 08-24-2019, 08:50 AM   #7
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The coach is beyond any warranty period so I decided to give the screens a try on the refer vent. I actually forgot about them until some scorching weather that we normally avoid. I wondered then about heat buildup with the screens in place, and we do tend to linger in the southwest after many have gone. I originally put them in a while back after watching some curious wasps eye balling a potential nest area while we were in a forested area. Honestly though, I'm in that compartment fairly often for cleaning and now that this thread has brought them to my attention I'll remove them. It was an experiment I suppose and although it was not a fail, the screen there doesn't seem necessary. It is however needed at the furnace vent. So an edit for our OP, furnace vent only. The others I'm in often enough for cleaning.
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Old 08-24-2019, 01:58 PM   #8
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Bug Screens

Need to be clear on my post. I am referring to the Camco bubble type stainless screens designed for this purpose. I agree not to ever use screen door types you can buy at Lowe’s or Home Depot. Can’t imagine the Camco screens would restrict air flow. Anyway, keep those opinions coming. Need everyone’s experiences and opinions. Thanks
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Old 08-24-2019, 04:04 PM   #9
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I have used the Camco screens on my furnace, water heater, and fridge on the last 4 RV's. Never had a problem.
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Old 08-25-2019, 12:23 AM   #10
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Quote:
Originally Posted by Whammon2 View Post
Need to be clear on my post. I am referring to the Camco bubble type stainless screens designed for this purpose. I agree not to ever use screen door types you can buy at Lowe’s or Home Depot. Can’t imagine the Camco screens would restrict air flow. Anyway, keep those opinions coming. Need everyone’s experiences and opinions. Thanks
That is what I use with the exception of the springs I used stainless steel safety wire and wire twist pliers to attach the screens, the springs tend to fail and you lose your screen.
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Old 08-25-2019, 10:46 AM   #11
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Hi ! Welcome to IRV2! We're sure glad you joined the gang!

Noticed you are kinda new on IRV2 and wanted to say hello! We have had the screens on all our exhaust ports for a long time! Have fun and keep her between the ditches!

Good luck, happy trails, and God bless!
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Old 08-25-2019, 10:32 PM   #12
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Thank you
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Old 08-26-2019, 12:02 AM   #13
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https://www.lowes.com/pd/BAYER-ADVAN...Killer/3018795

I use a strong mix of this and spray all my exterior vents, etc along with my tires and undercarriage a couple times a year.
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Old 08-26-2019, 05:21 AM   #14
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We us the Camco screens on the furnace only. The wasps get into the heat exchanger passages and stop the blower from turning. Never used them on the fridge or water heater.
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