LennoxX6675 (2-Pack) Carbon Clean 20 x 25 x 5 Inch MERV 16 Efficient Air Filter Replacement for Healthy Climate Air Purifier Cleaner Purification Systems

Be careful you are purchasing two filters and not one for a price of roughly $180. Some vendors list is that what you think is a good value maybe $168 and then you learn you only receive one filter. Same day supply was very quick at delivering and gave me two filters for a reasonable price. Rest of my review follows. These filters have a good construction quality and I am confident they do what they say they do. They are very expensive and time will tell if it’s worth the investment. Mostly I was so impressed with how fast this company got them to me and they were in excellent condition thanks to excellent exterior packaging. Nice work.

What more can I say than, wow!, this filter really is fantastic, I won't use anything else from now on. I was using a merv 13 filter previously and to my surprise even though we were over due for a change and just went through the worst air quality in the world for over a week with fires my filter wasn't actually that bad so I thought maybe I wouldn't really notice a difference. I definitely noticed a difference. Even with constant running of various hepa filters in the house running the whole house fan with this filter made more of an impact in feeling more like we were breathing fresh outdoor air almost, absolutely love this, so worth the extra expense.

This is a good product.

Allergist recommended high efficiency air filters for our house and these Lennox MERV 16 are the best! Much less expensive than buying them from our heating company.

The filters were packed very well and nice quality for my Lennox unit however the bottom filter had several areas of the carbon slats that had been smashed and for the cost I felt it should have been undamaged. I contacted the vendor and had almost an immediate response that they would send out replacement and a shipping receipt to return damaged filter. This is the first time I have used higher that merv 13. It's only been a few weeks of use but I have noticed a reduction of dust on my furniture and I run the circulating fan on ac unit when cooking to reduce odors that linger in house. So far I'm please with the performance and as far as price this vendor had the best and I'm pleased with their customer service.

The Lennox X6675 Carbon Clean 16 MERV filter fits the larger Honeywell Electronic Air Cleaner. The Lennox X6675 has a very high MERV rating for a whole household system. Higher rated filters are for special use such as a hospitals, other limited application and require higher performance furnaces that are not generally found in households. This filter is about three times as expensive as a Lennox MERV 13 Filter; however, the Lennox MERV 16 Filter has significant more square feet of surface filter and therefore should last 2 to 3 times as long as the less expensive filter. Actual performance would depend on many factors including the presence of pets, wall to wall carpeting and the cleaning routine in the household. The carbon coating also adds to the performance of the filter. I am purchasing this high performance filter for a parent that has COPD.

TLDR; you need this brand for Lennox HVACs. Only one.If you have a Lennox filter box for your HVAC, this is the brand you need to use. My old unit used a 20x25x5 Honeywell filter and that filter would not fit in the slot of the Lennox by a fraction. I suppose this one would fit in the Honeywell, but not the other way around. When checking big box stores, the common name brands would not fit either...go figure.MERV16 is overkill for almost all situations outside of a hospital, but the carbon filter is a nice to help control any mild odor. I use it for 12 months on my main zone HVAC, and dust was never a problem. If you are prone to allergies and have pets, this would help a lot. As long as the price is right, I would recommend this.For clarification, this is ONLY ONE and NOT TWO according to the description.

MERV-16 + carbon coating is exactly what you want to really filter your air. Make sure your blower can handle it, lowering the furnace speed to about 35% and running 7x24 really worked wonders with the California Wildfires last summer. AQI outside was 200-400, and indoors (with fan running 7x24, blue painters tape on leaky windows/sliding glass doors) was a very happy 25-70. When AQI was 125 outside, indoors improved to 5-12 AQI.If you don't have a 5" think furnace filter, get the 20x20x5", a standard 20" box fan, and tape the fan to blow through the filter (ensure airflow matches arrow on the filter). Run on low 7x24, and you will be very very happy.Can't promise anything with COVID protection, as I'm not qualified, but if the choice is this, vs something basic and MERV-8, this wins. Most of the HVAC contractors are recommending MERV-13 for office buildings...So beware of excessive pressure drop across the filter, need to change more often, and watch the equipment temperature -- restricted airflow will freeze the AC coils, or overheat the furnace, or just burn out the blower motor.

Only one off was in the package.

This filter has substantially more pleats, and thus more surface area than equivalent brands' filters, including 3M. The separation of the pleats is maintained by plastic combs...a great feature I haven't seen on other designs. For best efficiency it is a good idea to add self-adhesive foam weather stripping to the top, bottom, and sides. This eliminates leakage or by-pass that might carry dust through to your furnace. 3M's filters come with this. For the price of this filter it would be reasonable to expect a foam gasket like 3M filters have. The major downside of this filter is its substantially higher cost.

Very quick delivery. The filters were individually wrapped in plastic with no signs of damage. Very happy with my first order through this company and will order again.