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Message
re: Anybody order AC Filters online?
Posted on 6/28/23 at 11:10 am to CrawDude
Posted on 6/28/23 at 11:10 am to CrawDude
quote:
When perusing professional HVAC forums like HVAC-Talk, Aprilaire filters are the ones most favored, considered the best, by techs but they don’t make a wide variety of sizes or thicknesses - in my case I’d have to change both my air return grills/plenums, to use them.
Yes, I can only use their filters and they’re not cheap but they were installed when I got the new units.
The filter itself is not a normal air filter. It an accordion style and the material is maybe a 1/4” thick.
Forgot to say that I always buy them on Amazon.
0
Posted on 6/28/23 at 11:44 am to lsujro
quote:
I have always heard this, but every hvac tech I've spoken to about it says that this is no longer the case.
This. I just had a new unit put in and the owner of the company said it’s perfectly fine to use the pleated filters
Posted on 6/28/23 at 11:56 am to meeple
quote:
So what’s the go to “cheaper” non-pleated filter to get?
Well I’ve been using Flanders MERV 4 “horsehair” filters, but I occasionally use a MERV 4 pleated, and change them monthly. Maybe they are $3 each? I have a manometer to measure pressure drop across the filter and these filters have no more 0.1 WC pressure drop - within the recommendations.
That said I found one of my ceiling air returns can accommodate a 2 inch MERV 8 pleated filter (Flanders) and the pressure drop across that filter is an acceptable 0.1 inch water column (WC) so I’m using that filter now.
Posted on 6/28/23 at 12:24 pm to CrawDude
Anyone here have a newish unit and use 4-5” thick filters?
Posted on 6/28/23 at 1:11 pm to CrawDude
Can you recommend a specific horsehair filter?
Posted on 6/28/23 at 6:24 pm to meeple
quote:
Can you recommend a specific horsehair filter?
Flanders E-Z Flow MERV 4 filters LINK - of course they are spun fiberglass and not horsehair per se - I guess it’s a term some techs use to distinguish them from pleated. Flanders manufacturers good HVAC filters. I buy them locally at a hardware store that I alway frequent. I do change them monthly.
I spray these filters with this filter tack spray to help pick up more dust particles (tip I got from one of the techs on the HVAC-Talk Forum). LINK. It does seem to work.
Posted on 6/29/23 at 8:01 am to ItzMe1972
(no message)
Posted on 6/29/23 at 8:21 am to CrawDude
quote:
Flanders E-Z Flow MERV 4 filters
quote:
filter tack spray
Dang the Ace around the corner carries both of these. Also my outlets are very dirty. I’m guessing after watching the videos you linked, my pleated MERV11 filters were blocking air flow this the ducts have been pulling air in from the attic.
I appreciate all the info on this!
Posted on 6/29/23 at 2:42 pm to meeple
quote:
watching the videos you linked, my pleated MERV11 filters were blocking air flow
The video did a good explaining if you restrict air flow by using a highly restrictive high MERV 1 inch thick filter it’s going to pull non-filtered air from someplace else.
But it’s important for everyone to know this usually applies to the thin 1 inch thick filters, you can probably use a much higher MERV filter with minimal air restriction if you are using a thicker filter, like a 2 inch, 4 inch or 5 inch thick filter.
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