We have a brand new premium Lennox HVAC system that was installed in our home about 2 years ago. The system uses a Honeywell MERV 11, 20x25x5 filter. We changed this filter every 3 months but my wife kept sneezing and there was a lot of dust in the house which appeared to be generated by the HVAC system. We were about to add a secondary filter system when I came across these MERV16 filters. I thought - it's only $100 or so - worth a try. I installed this MERV16 filter and within a day you could see a difference in the air quality in the house. Just in case, I checked - my wife vacuumed and after a couple of days found that there was almost no dust anywhere. With MERV11 filters, everything had a noticeable dust content in one day. Also, my wife stopped sneezing while the system was running - wow. I'm sure of it - and I highly recommend using this filter. Installation only takes 30 seconds (I have a built in attic ladder) when standing in front of the unit. If you want clean air in your home, use this filter!
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