Great Idea! Usage TIPS included...
My fiancee says it was really easy to cut. He said he laid an old filter on top of the new one, to get started. He then put the frame together (adjusted it to the appropriate notches indicated on the frame), and then, before cutting anything, slid it into the furnace slot to test it. Once he was *sure* he had the frame to the right size, then he measured (against that frame) and cut the cross-hatch part, and then he measured (against the frame) and cut the guts (filtering part). measure twice, cut once
We don't have animals or an old house and we keep our home generally clean, and this filter seems to work great. With the climate where we live being either extremely cold or extremely hot and humid and the air quality and cleanliness outside being questionable, we run our whole-house HVAC often. This filter states a good rating (MERV 8) and a 5-year lifespan. According to an interesting furnace filter care site I found via google, MERV runs from 1-16, with ratings of 5-8...
Not what they appear to be
Like most of you, I went searching for a cheaper and more environmentally friendly solution to replacement furnace filters. I have always kept my old filters around for a few months after usage just to monitor the dirt collection. I installed this easily without any cutting. At the end of month one, I placed it in the tub to see what had been collected and I watched the water coming off the filter. What I saw was that the water looked much too clear considering what I had been picking up in the past. Months two and three looked the same with no noticeable dirt in the tub. There seemed to a great deal of dust on the furniture all the sudden, yet another indication these were not doing their job. I went back to try my filtrete micron filters for a month which I used to change every 2 to 3 months and found the filter completely filthy at the end of that month. As I said, these are typically 3 month filters. I also recently had my furnace serviced and the repairman told me not to...
Excellent way to save money and reduce waste
First, the facts: the census estimate for # of U.S. households in 2010 was 114,825,428 (interpolate upwards as this review was written in 2012).
Conservative assumptions...
Assume: 66% have central air/heat
Assume: 2.5 air intakes/home
Assume: $5/filter
Assume: 4 filter changes/year
With these low-ball assumptions, we are talking a $3.8 BILLION a year in "subscription fees" for the replacement filter industry. Do you honestly think that the one-star reviews here were made by anyone other than agents of this racket? Caveat Emptor.
That said, I HAVE used these filters for over a decade, and here is my opinion.
PROs
1. They do an excellent job of filtering. Not as good as the high-end* HEPA filters, but they do get the grime, smoke, dust, pollen, hair out of the air that is circulating through your house.
2. On a cost-basis, it's a no-brainer. Within a year of installing these, they will have paid for...
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