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On mine, there is an 8 inch duct. With a dryer-like vent hood on the outside wLl of my garGe and about 8 feet of duct that enters the air intake box of my furnace unit, just above the filter.I've never seen an outside air (OSA) intake on a residential system, only on commercial systems. For those of you who have blocked those, can you describe where they are located in your system?
Automotive interior air filters. They work great.Wife wants to put together an air purifier or three and she was looking at some box fan contraption idea online that uses furnace size hepa filters. Evidently she is not the only one as the filters appear to be sold out everywhere locally. We are headed out now to see what we can find that is HEPA rated. Please post any ideas you have for making something at home, hopefully on the cheap. We have some Kirby hepa vaccum bags we are thinking about sacrificing to rig up on a portable AC.
On mine, there is an 8 inch duct. With a dryer-like vent hood on the outside wLl of my garGe and about 8 feet of duct that enters the air intake box of my furnace unit, just above the filter.
Evidently she is not the only one as the filters appear to be sold out everywhere locally. We are headed out now to see what we can find that is HEPA rated. Please post any ideas you have for making something at home, hopefully on the cheap.
I posted a photo of mine up above somewhere in this thread. It's pretty basic and uses a 3" hole. The house is now slightly positive relative to the outside. The A/C is in the garage and I have a 24x24x4 filtered opening to allow filtered air into the garage, and then through the filtered OSA opening.I'm pretty certain that is only for combustion air during the heating cycle, not OSA intake for distribution via the supply duct.
Ancient and time-proven idea.Box fan sitting in a laundry basket.
Use a wet towl as a filter . And the basket to catch any water mess.
Just keep the towel wet.
Hey. It's something.
Thanks I'll check it out.I posted a photo of mine up above somewhere in this thread. It's pretty basic and uses a 3" hole. The house is now slightly positive relative to the outside. The A/C is in the garage and I have a 24x24x4 filtered opening to allow filtered air into the garage, and then through the filtered OSA opening.
I heard Sniper Birds from SE Portland were the new Mil-Spec Sentinel Species.My parakeet just died so I'm following this thread.