Filtrete 14x25x1 AC Furnace Air Filter, MERV 12, MPR 1500, CERTIFIED asthma & allergy friendly, 3 Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 4-Pack (Actual Size 13.81x24.81x0.78 in)

> Well constructed. I've had no problems using these for probably 10 years or more.> In my opinion, the MPR 1500 filters are a good compromise, filtering out household dust, pollen, fungus spores, pet hair (i.e., most allergens), and are moderately effective in filtering out bacteria and viruses.> If your main concern is pet hair, then a lower MPR rated filter might be a better choice --- reducing your cost and reducing the frequency you need to change the filters. (Some reviewers claim that they have to change the filters weekly). If you have NO problem with allergens (or perhaps live in desert states), then a moderately lower MPR rated filter might be more cost effective for you.> Higher MPR rated filters (i.e., >1500 MPR) are more costly, and probably provide little improvement in air quality, unless you have someone in your household with a contagious infection; or an individual with a highly compromised immune system --- or other special situations. Higher MPR rated filters may reduce airflow though your AC condenser unit (especially as they clog up more quickly), which may translate into slower cooling, and higher energy consumption.DISADVANTAGES OF LOW MPR RATED FILTERS> Moderately high MPR rated filters (such as 1500 MPR) filters catch most of the material which would otherwise catch on the condenser, reducing its efficiency, which may translate into slower cooling, higher energy consumption, or shorter life of the condenser unit. In hot humid South Florida summers, this is a serious concern -- the dust, etc. that can gets through cheap AC filters mats up on moist condensers, clogging the condensers, reducing the efficiency of cooling, and therefore increasing your electrical power costs. It cost several hundred dollars to have your condenser cleaned by an AC technician --- which you'd probably need to do yearly (at least in South Florida) if you used the cheapest AC filters (say, less than 300 MPR).> Have you seen all the ads for cleaning your airducts, mostly to remove fungal spores? At probably $500 for a typical home? Better that the spores don't get to your ducts in the first place (i.e., if you use moderately-high MPR rated filters). Cleaning might work if you have sheet metal ducting --- But I (and many other people) have ducting built of insulating sheets, which are porous inside --- and I don't believe that significant cleaning (certainly not removing fungal colonies) is even possible. So, I chose what I judge to be the highest practical MPR rate filters (i.e., MPR 1500).BOTTOM LINEI believe that moderately MPR rated filters (e.g., MPR 1500), changed moderately frequently, pay for themselves in short-time electric bills and long term maintenance costs.SCHEDULE> A three month schedule works well for me. After 3 months, the filters are retaining alot of material, but are not clogged. In some seasons, I might be able to stretch to 4 months, but I stay on the 3 month schedule.> I suspect that reasonably frequent changing of the filters pays for itself in lower electrical bills (because the AC doesn't have to work as hard with clean filters). But what is "reasonable" can vary greatly from household to household, or region to region. I suggest guestimating your schedule, and when you change your filters, inspect them, and adjust your schedule accordingly.

I actually bought this upgraded (1500) filter because my cat has bad allergies. I have two freestanding hepa air filter fans running in the house but with the drastic uptick of allergies this season (after all of the rain), my cat was still suffering. As a pet owner, of course I’ll do anything I can to help him. I’ve noticed he’s doing much better even with allergens spiking day in and day out. I know it puts more strain on the air intake of my hvac system, but maybe I can get away with this during peak season.

Convenient, I have it set for the auto ship so I’m reminded to change the filters- and it’s super convenient! Especially in a multi pet household, these filters get the job done!

We have a golden/lab and a ton of pet dander in our home. We did a home remodel last summer and we have a ton of dust. Since we started using these filters I find that they last double the amount of time than the filters I used before (now lasting 2 months) and my husband gets less allergy attacks - big win in our home!

The Filtrete Air Filter has worked well in our HVAC system throughout our house. The allergen filter removes a lot of the dust and bacteria from the air that would otherwise cause a problem for my allergies. The two filters in one package enables us to have an extra one on hand when it's time to change out the filter.

It has bluetooth access so you're up-to-date on replacements. Really filters the air in the house - easier on our breathing and dusting.

I use only this brand for allergen concerns. The Heavy Duty Filtret Air Filters are good, expensive, but many times I don't need to change it monthly as recommended, unless I have been running my central a/c or heater non-stop.

My HVAC system is an odd sized unit. The 15x20x1 is sometimes difficult to find. This particular purchase fit my needs for size as well as other concerns, and it was available.

It was a furnace filter so that is what I used it for. So far it works fine. I thought it was more expensive than it should be. It was shipped and arrived on time.

Haven't put the filters in yet butmy husband was in that industry and he is pleased with all aspects of the product so far

Super satisfied customer

The price was very good

It's working great to reduce the amount of dust in our house. The product says it can last up to 3 months, but it seems like we need to change it every month or 1.5 months -- which isn't a big deal for us.