Filters for home heating/cooling system


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Old 03-27-06, 11:37 AM
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Filters for home heating/cooling system

Our home's heating/cooling system has two air filters - one on the intake side of the blower and one on the exhaust side of the blower. The filters are the kind that must be replaced at certain ntervals. They measure 16" x 25" x 1". Prices range from $3 per filter to $20 per filter.

What kind of filters should I use? The cheapo blues ones or the $20 super-duper ones?

Another question: Friends tell me that my dual-filter arrangement is not the norm. How unusual is my system?

Thanks.
 
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Old 03-27-06, 12:29 PM
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drhall8239, Welcome to the DIY Forums.
I moved your post here because the Tips, hints and tricks Forum is non-interactive so you would not have gotten an answer. I am sure someone here will help you.
 
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Old 03-27-06, 02:41 PM
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Hello Dr Hall.

I have never heard of this before. How is the filter in place after the blower? What's your furnace model #?


I'd suggest the lower MERV around 8-10 filter in the Pleated air filter.. The higher priced one will load up way too fast, and cut down on your air flow.

I don't care for the cheap blue air filter since they don't do much.
 
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Old 03-27-06, 05:27 PM
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You should only have one filter!! A $3 or $4 dollar pleat will be a good one 8-10 merv as stated above!
 
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Old 03-30-06, 04:29 AM
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Filters for home heating/cooling system

Thanks for responding. Please take a look at my system. Go to:

http://homepage.mac.com/updome/Filter/PhotoAlbum87.html


You can see filters on either side of blower compartment.
 
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Old 03-30-06, 04:39 AM
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Ok, You ARE OK with the two air filter.

You have a very large cooling coil, and for the blower to able to move the air, it needs return on both sides. You must have a very large home?

Your air flow comes down on both sides, into the blower and up into the furnace.

So make sure the air filter is pointing at the furnace.
 
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Old 03-30-06, 05:17 AM
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filters for home heating/cooling system

Well, how about that! It never dawned on me that both sides of the blower would be intake, but what you say makes perfect sense. By the way, I've placed the filter on the right facing the wrong direction for the last 4 years.

Thank you.
 
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Old 03-30-06, 06:42 AM
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No harm is really done with the filter in wrong. It just lose it's support when the filters gets loaded up with dust.

With the pleated filters, check them every month.. Even tho the pacakge says last up to 90 days, DOES NOT mean ignore it for 90 days! The diritier the filters get, the air flow is going to have a harder time going over it.

That's why we say the lower MERV pleated filters on the 1".

If you had the 5" media, then you can go up higher.
 
 

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