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Reusable Furnace Filter?
Old 03-16-2019, 03:26 PM   #1
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Reusable Furnace Filter?

Supposed to last 10 years:

https://www.amazon.com/WEB-Filter-Ad...qid=1552771375

What do you think (vs. $5 every two months)?
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Old 03-16-2019, 04:18 PM   #2
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We use at most 2 per season. Why are you running through so many filters?

I like the filter to be near white if possible so I can see the accumulation.
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Old 03-16-2019, 04:28 PM   #3
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I buy 6 packs off the internet, change 'em every 3 months. Not going to clean furnace filters.
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Old 03-16-2019, 05:01 PM   #4
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It is MERV 8, which is enough to protect your air handler. It's electrostatic, which means it does a good job of holding particles that have a charge, less good on other stuff/



To remove smaller dust, etc you'd need a finer filter. If you've only got room for a 1" thick filter, then going to a MERV 12+ filter means more load on your fan and more frequent filter changes. The "media" filters that are 4-5" thick last 6-12 months and can be MERV12+ (I change ours every 6 months) and still not bog down the airflow very much (just due to the larger filter area).
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Old 03-16-2019, 05:08 PM   #5
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Originally Posted by Lsbcal View Post
We use at most 2 per season. Why are you running through so many filters?

I like the filter to be near white if possible so I can see the accumulation.
Furnace guy recommended 1 change/month. I doubled it.

Disposable air filters are more effective at trapping small particles. Washable air filters are typically only good at protecting from large particles like dust. They do not effectively filter out pet dander, bacteria, viruses or smoke, especially when they're not meticulously maintained.
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Old 03-16-2019, 05:16 PM   #6
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I suppose it depends on your climate and perhaps the dust in the area you live.

I just checked ours and it was overdue for a change. So thanks. I need to create a reminder next season to change around December or January.
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Old 03-16-2019, 05:26 PM   #7
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I don't reuse but change the filter every 90 days. Running the AC February- December. In January the heat maybe comes on 2x a week for an hour a day. In Florida.
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Old 03-16-2019, 06:07 PM   #8
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Was told by several different sources, buy cheap ones and replace often.
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Old 03-16-2019, 07:05 PM   #9
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We have unusual size air intakes where the filters are placed. The filters were often out-of-stock at local big-box stores and expensive at about $5 each. So 25 years ago we bought Boair washable filters and never looked back.

Guess what? They easily trap all the stuff that "Furnace guy" said are not trapped. One can see this when they are cleaned. They actually trapped MORE than the disposable filters.

To clean my filters, I use a vacuum with roller brush to get the big stuff, then a power washer to clean through and through. Yes, the filters are not fragile and I can throw them on carpet and just vacuum them like they were carpet.

And my HVAC utility bills are low and unchanged over many years.
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Old 03-16-2019, 08:05 PM   #10
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Ok , just time consuming. Wash, rinse, drip dry, then re -install, and run the furnace 20 minutes to remove all residual moisture . I'm too lazy.

Can you find exact size ? I'm no fan of adjustable frames, they usually create paths for air to bypass the filter media.

I usually buy multi packs of mid grade 3M pleated filters online , about $6 ea. Same filters at home depot are like $13
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Reusable Furnace Filter?
Old 03-16-2019, 08:52 PM   #11
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Reusable Furnace Filter?

We use 6 filters for the two HVAC systems in our house. These disposable filters are generally overpriced and the washable ones that Iíve seen protect the system but donít do much for air quality. I decided to use hours of fan operation to trigger filter changes. Our t-stats have filter minder alerts built in. I adjust the alert setting based on the condition of the filters after x hours. The change interval was reduced from 90 days to approx 120 days based on 600-800 hrs of fan operation. I buy the merv8 filters in bulk online.
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Old 03-16-2019, 09:29 PM   #12
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Quote:
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Quote:
Originally Posted by Lsbcal View Post
We use at most 2 per season. Why are you running through so many filters?

I like the filter to be near white if possible so I can see the accumulation.
Furnace guy recommended 1 change/month. I doubled it.
So what is the filter like after 2 months? Ours seem to last the entire season, when I check them mid-season, I generally just put 'em back, maybe knock them on the floor to clear any little build up.

This isn't a calendar thing, it's a condition thing. Change them when they are getting some build up. Any more is a waste. Plus, I suspect a slightly dirty filter does a slightly better job - the little hairs and stuff will pick up more of the dust going by, it acts like a filter too.

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Old 03-17-2019, 04:42 AM   #13
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You can always find deals on filters on slickdeals. We just bought 15 filters for our downstairs handler...and 15 for the upstairs handler. Sadly they're different sizes. I think the price came to around $4/filter. With house renovations...we have been changing them every 2 months at most.
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Old 03-17-2019, 04:55 AM   #14
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The one I used had to be cut to proper size and washed every so often. Then it just seemed nasty after the first wash and a good place for bacteria and fungal growth especially during the humid summer months in Florida. Reminded me of the unsanitary (regardless of what they say) public washroom blow dryers. After one use for a couple of months I went back to high quality throw away filters.


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Old 03-17-2019, 06:20 AM   #15
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Buy a box of correct size filters from Amazon or Tru value. Change every two months. Reusable might be an option when I have more free time.
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Old 03-17-2019, 06:40 AM   #16
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Quote:
Originally Posted by TromboneAl View Post
Supposed to last 10 years:

https://www.amazon.com/WEB-Filter-Ad...qid=1552771375

What do you think (vs. $5 every two months)?
I had something like that at another house. Worked fine. On my current house I buy the cheapo's at Walmart and replace every 2 months. I take a look after a month but they are usually still good.
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Old 03-17-2019, 07:48 AM   #17
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My problem is I can't find a filter in my size. (15x25) I like the idea of a trimmable size!
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Old 03-17-2019, 09:14 AM   #18
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We replace ours every 4 months, and it’s not visibly very dirty. I assume it depends on your unique “fresh air.” I bought a reusable filter years ago and used it for a while, but it’s sitting in the basement gathering dust (pun intended). It looks much more porous than disposable filters, it’s a dark green so it would be hard to know when to change it, and I’d never know how clean I was getting it.
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Old 03-17-2019, 10:04 AM   #19
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... What do you think (vs. $5 every two months)?
Well, if I brought one of these filters to your house every two months and offered you $5 to clean it, would you take the deal?
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Old 03-17-2019, 10:07 AM   #20
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Well, if I brought one of these filters to your house every two months and offered you $5 to clean it, would you take the deal?
Well put. I might.
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