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Furnace Filter 20 X 25 X 5
QUESTION:I have read a couple of postings about the merits of dust filters and
could not agree more about their value. I got by with a shopvac for a
few years and then got a small chip collector which I attached to the
table saw or whatever I was using at the moment. However, the DUST was
still a problem.
Then my neighbor got a new furnace!!!!!!!
I grabbed the dead body of the old one (furnace that is) in the middle of
the night before the trash man got there. It was a simple matter to use
a saber saw with a metal cutting blade to separate the bottom (where the
fan was) from the burners and heat exchanger. I thought of building a
new box but why bother! I enlarged the hole where the filter went to fit
the largest filter size (20 x 25 I think). I mounted the whole thing
with 4 ropes from the ceiling near my tablesaw. I also used a piece of
cardboard to make a wedge shaped diverter between the floor joists
directly above the hole where the air comes out so half the air blows to
the front of the house and half toward the back. It circulates sort of
like the letter 'B' with the blower where the crossbar hits the vertical
stroke. It clears the whole 400 sq ft shop in less then a minute.
Regular furnace filters do nothing. I use 2 inch pleated filters that I
get from Grainger in boxes of 12. When the filter gets full, the motor
speeds up and makes more noise so I take the filter off (it's clipped to
the outside of the case) and go outside and give it a blast (backwards)
with the air compressor. It's good for several cleanings. I also
installed one of these filters in FRONT of the electronic air cleaner in
my real furnace. It nicely picks out all the nasty heavy stuff that
would have gone right through. Much better than the fiberglass filter
that came with the furnace. So what do I do with the rest of the box of
filters you ask? I have found several other 'furnaces of the
night' and made filters for several of my friends. One friend went one
step further. He got a 4 bag super filter and added it after the pleated
filter. Unfortunately they are 5-10 times as expensive. I think mine
works well enough though.
You can imagine that a blower that normally does my whole house does a
pretty good job on my little shop in the cellar. Think recycling -
furnace installers toss them out every day. In fact, there's one sitting
in my father-in-law's garage right now as a result of a $1700
installation he had to have done in his cellar last Monday. Anybody live
near Syracuse?
ANSWER: I saw your post On furnace Fans And I have one too! I havnt made it into
anything yet But In my locale The Furnaces now are bein replaced and
there are quite a few of these Squirrel cage deals in Intake/exhaust
boxes lyin around-and theyre pretty powerful..Im a believer in Takin
Advantage of the Great Curbside Galleria around here where ive picked up
Tools,Furniture,Appliances,Wood,Motors and much much more All for free!
In fact would you believe many papers carry ads for stuff to be given
away for free like Pianos-Pets-Wood-Bldg supplies etc!
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