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Lots of filter talk here - how about home hvac air filters #5440007 05/27/20 09:46 AM
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J_mo Offline OP
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Theres lots of talk about any type of filter under the sun here. May I pick your brains on air filters for home hvac?
I'm looking for an alternative to the 3m fpr 10/ merv 13 filters that are $20 each. My home uses 2 at a time.

I'd like to stick to merv 13 or above providing my hvac wont become restricted. It seems impossible to shop these days and get truth based information other than the forums.


2015 cummins 6.7 - DBL7349- eabp100- M1 5-40 TDT
2006 F-350 6.0 - Lf3656 - eabp110 - Rotella t6 / 5-40 M1 5-40 TDT
2018 Wrangler JL 3.6 (The lady's) under warranty - mopar mo349 - Valvoline Syn 0-20
Re: Lots of filter talk here - how about home hvac air filters [Re: J_mo] #5440034 05/27/20 10:19 AM
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csandste Offline
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HVAC people I've talked to say that high efficiency filters make problems. The last one to do an install actually recommended fiberglas. I always use the cheapest paper filters.


2017 Kia Soul+ Valvoline Daily Protection 5w30+ a bit of Harvest King syn 5w30-- 75,000 miles
Re: Lots of filter talk here - how about home hvac air filters [Re: J_mo] #5440035 05/27/20 10:20 AM
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JustinH Offline
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There is a company called Nordic Pure they are either in Texas or Oklahoma.

They have been very good to work with, I have been using them for about two years now.

I have an odd sized 4 inch panel filter for my new house, and they had a variety of filters in that size and all different MERV ratings.

Price was about half of the box store price, and delivered rather quickly.

I actually had one problem, they put the wrong filter in the box once, and they resolved the problem and picked the old filter up at my door.

If you look online they have a 10 or 15 percent coupon usually.


'16 Ford Escape
'11 Scion XB
Re: Lots of filter talk here - how about home hvac air filters [Re: J_mo] #5440044 05/27/20 10:36 AM
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henni Offline
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We use mini-split filters which are washable and a true HEPA systems in two rooms

https://winixamerica.com/product/xq/ (about half price on Costco)

Comes with a very cool app that connects via WiFi for monitoring and settings

Re: Lots of filter talk here - how about home hvac air filters [Re: csandste] #5440052 05/27/20 10:42 AM
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zzyzzx Offline
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Originally Posted by csandste
HVAC people I've talked to say that high efficiency filters make problems. The last one to do an install actually recommended fiberglas.


I agree. But it really depends on what your blower was made to work with. I.E.- if you have an old furnace that originally used fiberglass, keep using it or you will impede air flow.

Re: Lots of filter talk here - how about home hvac air filters [Re: J_mo] #5440057 05/27/20 10:49 AM
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rekit Offline
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I have found that 20x25 for example doesn't mean 20x25. The AC companies-mine is Carrier-seem to have made slight "adjustments" so that only their $$ filter fits. I found a company called IAQ Source in Indiana that has my filters in the exact size and the quality seems as good or better. Cheap or free shipping. Been around since 03. Mine uses the 4" thick, but with some pets in the house I use a cheap $1 pre-filter in the intake and toss it frequently, c/o the real one every few months.

Re: Lots of filter talk here - how about home hvac air filters [Re: JustinH] #5440074 05/27/20 11:18 AM
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knerml Offline
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Originally Posted by JustinH
There is a company called Nordic Pure they are either in Texas or Oklahoma.

They have been very good to work with, I have been using them for about two years now.


Also like Nordic Pure filters.

Use Merv-8 filters. I feel this is a good balance between filtering and air flow.


2015 Hyundai Elantra Sport 2.0 GDI Mobil 1 5W30 & OEM Filter
2018 Hyundai Santa Fe Sport AWD 2.0T Castrol Edge 5W40 & OEM Filter
Re: Lots of filter talk here - how about home hvac air filters [Re: J_mo] #5440077 05/27/20 11:22 AM
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Kawiguy454 Offline
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+1 on the el cheapo fiberglass filters recommended by the HVAC guy. They cost like $20 a dozen and seem to trap dust just fine and can change them often and not feel like i have a leaky wallet.

Re: Lots of filter talk here - how about home hvac air filters [Re: zzyzzx] #5440083 05/27/20 11:31 AM
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Kawiguy454 Offline
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Like any filter the tighter the filtration the more the obstruction to flow so more surface area is needed. Old or new blower makes no difference a loaded up filter will cause the blower motor to pull A LOT MORE current $$$ and the air coming from the registers will be less so sunny side or upstairs rooms may not get enough circulation.

Re: Lots of filter talk here - how about home hvac air filters [Re: J_mo] #5440086 05/27/20 11:36 AM
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97prizm Offline
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I used the 3M high efficiency filters along with a pre filter and an electrostatic. Managed to get 21 years from the furnace.


If at first you don't succeed fail fail again. (Waldorf and Statler.)
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Re: Lots of filter talk here - how about home hvac air filters [Re: J_mo] #5440098 05/27/20 11:53 AM
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J_mo Offline OP
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Thanks for all the replies!
I have used regular fpr 4 for the 6 years I've had the house. New 5 ton hvac system installed last summer courtesy of a good friend of mine and his recommendation was also el cheapo fiberglass changed often.
But I notice lately the lady and I get congested or I'll wake up with a sore throat over night with ac, I'm assuming allergies as I'm only getting older (newly minted 31 years) so im looking to go way up in filter efficiency.


2015 cummins 6.7 - DBL7349- eabp100- M1 5-40 TDT
2006 F-350 6.0 - Lf3656 - eabp110 - Rotella t6 / 5-40 M1 5-40 TDT
2018 Wrangler JL 3.6 (The lady's) under warranty - mopar mo349 - Valvoline Syn 0-20
Re: Lots of filter talk here - how about home hvac air filters [Re: J_mo] #5440111 05/27/20 12:16 PM
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JustinH Offline
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Well there are a lot of variables when choosing type of filter. If you have a single cold air return, and a 1 inch thick fillter, then the fiberglass recommendation is right on.

Remember, HVAC filters are to protect the blower not to clean your air. If you are having dust problems or allergies, maybe consider a free standing air cleaner. We have one of those and it works good. I run it in the bedroom at night.

My house came with manual J paperwork, and has multiple cold air returns, and a 4 inch thick panel filter. They recommended a MERV 13. I have been using a MERV 11 or 12 from Nordic Pure, and feel its a good balance as well.

My last house had a single air return choked with a 1 inch panel filter. I used fiberglass and replaced them every 3-4 weeks.


'16 Ford Escape
'11 Scion XB
Re: Lots of filter talk here - how about home hvac air filters [Re: J_mo] #5440127 05/27/20 12:36 PM
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Donald Offline
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Get a media filter cabinet where the filter is about 5" wide. AprilAire sells the cabinet. I just requested one to be installed on my system. About $400 with some discounts.


2015 Ford F-250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: Lots of filter talk here - how about home hvac air filters [Re: J_mo] #5440142 05/27/20 01:05 PM
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When I fix any problem, I like to use a multi-pronged approach.

After you choose the 'best' Filter, take a look at your Vacuum Cleaner.
I always had a Central Vacuum that I thought was great / then I learned differently.

Last Month, being bored at home, I ordered (online) a Shark Model NV-751 from Home Depot.
I was really surprised at how much more dirt it picked up.
After every room, I was emptying the canister / I will not actually admit that to anyone in person.
1) The dirt is caught by a fine metal Filter Screen
2) Air then goes thru a 1 inch Foam Filter (before motor)
3) Air then goes thru a HEPA Filter (before exhausting into room)
ALL Filter are washable to be reused.
* * * Puts to shame any Vacuum that just has a Filter Bag.

So what I'm saying is: If possible, reduce the dirt in the room before the Cold-Air Return picks it up.

I am not affiiliated with Shark or Home Depot in any way.



Last edited by MasterSolenoid; 05/27/20 01:07 PM.

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Re: Lots of filter talk here - how about home hvac air filters [Re: J_mo] #5440152 05/27/20 01:22 PM
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JohnG Offline
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I can tell you what NOT to get. Anything with 3M brand on it!

Yes, this is my specific situation, but they are really junk in this department. My A coil has a UV light underneath it. The filter rack is just below that with the UV (14" Lightstick) mounted within about 10" above it. The filters are the very common 20X20X1 size. MERV 10.

The UV light disintegrated the filter media in just about 2 months! The UV light kills bacteria and mold and keeps the A coil free of those germs. I called 3M and they basically said TOUGH S#!t. No refund, nothing.
I've used other filters from different suppliers without incident, for the total 3 month projected life.
My suggestion to them was to at least put a warning on the package, which I'm sure fell on deaf ears.

At least I know that the UV lamp is doing its job I guess!

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