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Old 11-18-2010, 06:44 PM   #16
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High Efficiency Furnace Exhaust Vent-Need Bird/Insect Screen


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Originally Posted by DanCB View Post
I have had zero problems with it installed on my exhaust pipe. Also, the cap is CSA certified.

beenthere - I guess I should contact the site owner to see if I can get paid for my 'advertising'. lol
CSA approved. That ain't hard to do. Do you know what it means?

How long have you had that thing on your furnaces exhaust?

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Old 07-18-2012, 02:27 PM   #17
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High Efficiency Furnace Exhaust Vent-Need Bird/Insect Screen


Answers dont help me either. Wasps are making nests in the pipes and when I change my filters they don't want me around. Wasp nests also constrict the air flow in the pipes and I cannot get to them to remove.
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Old 07-18-2012, 02:47 PM   #18
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High Efficiency Furnace Exhaust Vent-Need Bird/Insect Screen


What filters are you referring to? This thread had to do with venting high efficiency furnaces, and that wouldn't have anything to do with your filters.
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Old 10-18-2012, 02:08 PM   #19
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High Efficiency Furnace Exhaust Vent-Need Bird/Insect Screen


I just had an high efficiency furnace installed. I found this thread because I was wondering about birds and insects getting into my intake and return vents. It seems to me that when your heating season is over you could put fiberglass screen over the ends of the pipes and secure them with cable ties until its time to fire up your system in the fall. Just remember to take these off before you start heating again in the fall. Problem solved for a few cents.
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Old 01-22-2014, 02:38 PM   #20
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High Efficiency Furnace Exhaust Vent-Need Bird/Insect Screen


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Originally Posted by beenthere View Post
A screen in the exhaust causes lots of no heat causes, when it freezes over.
True. I just had that problem last night. The contractor had used zip ties to put whatever he had available (apparently) over the 2 openings in my through-wall PVC pipes. One screen was a very wide plastic mesh, which is fine. Unfortunately, he used a fine screen, like for a screen door, on the intake, which froze over in the snow storm last night, causing my downstairs furnace to turn off. When I pulled the screen off this morning, the furnace worked fine. Having a screen is fine, if the openings are about 1/2". That will keep the leaves and animals out, which is the main goal here.
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Old 01-22-2014, 05:28 PM   #21
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High Efficiency Furnace Exhaust Vent-Need Bird/Insect Screen


I have had problems with stink bugs getting in the furnace through the cold air intake. Since my vent goes through my roof I was think about putting a screen over the intake pipe where it enters the furnace. Would this be acceptable?
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Old 01-22-2014, 05:51 PM   #22
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High Efficiency Furnace Exhaust Vent-Need Bird/Insect Screen


No, it may reduce the airflow and start tripping the pressure switch or won't burn properly or fire up properly which can be dangerous.

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