With smoke from wildfires being a reoccurring summer event in our area, this merv 13 filter is all we use. In winter months, I scale back to a lower merv rating.

3M is a highly static charged filter. U of M turned them down after test showed efficiency dropped 33%. MERV A rating is what counts for efficiency. I work for Camfil

MERV 13 1" Deep is a lot different than MERV 13 12" Deep. . I rum a MERV 14A 12" DEEP Change it every 2 years. deltaP is .18". stay with the 1" track MERV 8. It's fine for the coil. Add a UV lamp to remove viruses and keep your coil clean

Thank you for your advice

First of the month what the hell side are you on ???

Thanks for the video. I was wondering, what is the difference between MERV 7 and MERV 8?

Hi Don. I liked your advice on this MERV 5 - 3m Filtrete Air Filter. I sold the 3m Filtrete air filter back in the mid 1980's when it was licensed to the Allergen Air Filter Company in Houston TX. It's the same media used in their 3M N95 Face Masks. 3M started to sell their 1085 air filter to big box stores in the early 1990's. I spoke a lot with Larry C until he retired in 2016. There would be no problem using MERV 11 or 13 air filters if they doubled the size of the return air ductwork and plenum.

I have five filters in ceiling returns. 2 20X20 and 3 14X14. Really only the two in the more lived in area ever look dirty when I change them. If they will fit would it make sense to use 2 or 4 inch filters to have more serface area with the higher MERV at least in the two areas that collect more debris? Thanks.

Yes it ts too high.

Thats a pretty poor excuse for a text. For one your doing it in a laundry room where there is microscopic lint in the air and also right on top of a water heater. If that water heater is gas heated far more soot would be coming from that not the candle.

Turn off the music.

What’s with the super annoying music? Why? No need for it! 👎👎👎👎👎

Hey there, great video! Just had to replace my AC unit. Tech basically said don’t get anything to expensive for filters, didn’t really get technical. Just picked this up MERV 8. Wondering if that’s good enough, my size filter is 18 30 1. Was looking for filtrete but can’t find any MERV 8 or MERV 10. MERV 11 is the only one filtrete in my size but wondering if going to that is to restrictive or just stick with the HDX MERV 8, there only like 6 bucks at Home Depot!

Which filter is best. One inch or four inch thick? 6:03

If my unit has room for two do I put two? Or is it always just one? Thanks!

they don't eliminate oder. .ost carbon filters are a straight up scame...TRUTH

Would using a 5" Nordic MERV 13 help with the pressure drop? I use the 5" one with the really deep V pleats and I always thought the increased surface area helped with that. Never had a problem and I change them every 60-90 days. I used to use 2" filters and I realized the box would take a 5", no looking back.

What about Merv 10 with carbon? From Nordic pure

With a 4” filter, is it still necessary to change monthly?

Well done thanks fir a short and to the point breakdown of the different filters

If you have a woodstove or fireplace, change filter every month if you run merv 10 or higher. Or twice a month if you burn alot. Protect your hvac system.

Hmm, if only there was a way to measure when the filter is getting plugged but that would save a lot of furnaces from premature failure so who in their right mind would do that? Its all about sales and that's what makes this country a horrible place to live.

Nicely Done Good Sir! Was about to pull the trigger on buying a MERV 13 lifetime washable filter as it obviously sounds good. But now listening to your great tech advice, given the cost, the load on the motor and that I dont have the issues to need such filtering. There famous cold air auto filter company makes a Lifetime Merv 11 as well so Ill see if that works. Nicely Done, Very Nicely Done, thank you!!!!!

I have a question: we just had installed a Lennox ML 296 furnace. It is a two stage variable fan furnace. MERV 11 filter was installed on this brand new furnace. My question is, can I change that to a MERV 13 filter. Will that do any damage to the brand new furnace or should I call the Tech at the store or where I bought this furnace and had installed ?

Which filter would be less restrictive: 16 X 20 X 4 MERV 11 or: 24 X 12 X 1 MERV 5? I can put the large filter in my A/C unit in the attic or put the smaller filter in the hallway ceiling. Thanks for any assistance.

Yes I change my filter monthly for our daughter's allergies. Using a 13 currently but when I check my filter with a manometer it starts at a 1.23. I feel that two high for my furnace with a listed max on the data plate being .7. What are your thoughts?

At what pressure do you change filters?

Hi Don, just a general question while we r on the filter issue, what is your thermostat setting for your home, AC, heat, day, night etc??

Thanks for the information, I found it very helpful and will go with the Air X.

kzfaq.info/get/bejne/frOkn7B0vLeyo4U.html

Do the higher MERV ratings not “choke up” the intake air and thereby make your furnace work harder? If so, how to you choose between the efficiency of the filter vs the efficiency of the furnace?

I run a merv 8, with fan on 24/7. Reduces particles as well as my iqair did. Tested with Dylos 1100 pro particle meter.

Thanks for a detailed review. Never heard of this brand!

Can you test the Ace hardware Merv 8? I’m curious what the results show with that. Also, what CFM are you testing at to get your resistance numbers?

Turn down the music it's hard to hear you.

I use a particle counter, dylos 1100 pro. Pleated filter was good for 18 months. One day it was filtering fine, next day not at all. It was ugly, but working fine. No issues with a/c.

Thank you, Sir.

Very helpful

It would be good to see what the pressure drop is on a new filter compared to the old one

Excellent explanation. I currently use a Filtrete MPR 300, MERV 5. Thanks for sharing and Greetings from Nova Scotia Canada

How does this compare to the HDX FPR 5 air filter as far as initial resistance and overall quality?

Doesn't it matter the year of your furnace? Mine are old Carrier furnaces from 1979

I just bought an fpr 7 hdx air filter. We have a carrier system installed in 2012 with 1 cat and 1 dog. It says this is equivalent to a merv 10-11. Thoughts? Just dont want to harm the system

I don'e see how the number of pleats on the 3M means it's better. The pleats are smaller. Take the media out of the frame, stretch it out and measure the square inch, and then compare the three filters.

I thought I would give this filter a try and it's not bad nor great. The only deal was the price! I usually run to Lowe's for my 20x25x1 Filtrete filter for about $18.00. The only way to get near this price was if I bought 2 at the same time. I have nothing bad to say, but I will not be a repeat customer due to the pricing.

I agree - 3M really cheapened the design of their MERV 5 Basic filter as known as the 300 filter. Real cheap design with a handful of rounded looking pleats in a flattened design - doesn't have that true sharp pleated 1" depth design. Better to step up to the inexpensive MERV 8 Aerostar or Home Depot HDX filters with similar static pressure drop.

Who exactly is testing the filter media on the AIrX? There's no regulatory body testing these filters and being that it's not sold in Big Box stores whose to say it they're not using notebook paper for the filter media??

THE WEBSITE link appears to be non-functional now.

Shocking!!! 😳