When we remodeled our house we specifically put an air conditioning return vent on the ceiling near our wood burning stove. In the winter we use the air handler fan to draw the heat from the stove through the return vent and circulate the hot air around the house. The merve 13 filter is designed to filter smoke so by using the merve 13 we are circulating the heat from the wood burning stove ,and filtering out the smoke from the hot air, being circulated around the house. Works great and we rarely need to use our baseboard heat. A great savings in our heating bill.

Because of the size of these filters, they are very pricey from your HVAC company or even at your retail store. These were a great price for a MERV13 class filter and fit perfectly into my HVAC/Heating system. They last 6 months or more before needed to change them. Great filter!

This product works just as intended - great fit and sturdiness in the furnace, great quality, and it allows for clean air flow in the home.

They are a little thinner than the original ones that came with my hvac unit. They seem to work fine and the fit was good. However, because they’re a little thinner I will change about every 6 weeks. Price was very good even for changing out that soon.

I work with air pollution, buy these. Not only it's manufactured in Texas, but it's also the higher filtering for the cheapest price. You want to filter those smaller PM particles. I can only recommend it.

I have been buying the 90 day 3M filters. These are exactly the same quality and a much cheaper price. A definite must buy.

Love that these filters are white. Also 4 in the pack works great for me because I use 2 at a time. Seem to keep the dust down too. Will order again.

Bought Merv 13 on advice from technician that does maintenance on our heater. Unfortunately it was too strong, it started to bow in from to much pressure and I’m sure was stressing the heater. My fault, should have questioned him because I already knew what the system would handle. Had to order a lower merv rating that has a better air flow with my heater. We change our filters every 4-6 weeks for health reasons.

I tried these in my work furnace. I do notice that there is a lot more dust on the furniture than there was with the previous filters. So not the greatest in my book.

Not much to say, if you need this product then you have a few brands that virtually look the same. I really like the MERV 13 for extra purification and it does make a difference so I am happy with this purchase

I like these filters as they work well, a perfect fit and a good price. I'll be buying more!

Goods arrived damaged - will not fit on slot.

Ideal p hacer un filtro de ambiente casero