Sunday, July 08, 2012

Adventures in homeowning #19808

When he visited last month, the furnace/air conditioning tech casually mentioned that the filter, which generally lasts a year or so, had about another month of useful life. Any 16 x 25 x 5 filter would do, but a higher MERV rating would be better for an asthmatic.


Did you know that while the filter box may say 16 x 25 x 5, the size of the actual filter vary up to three-quarters of an inch - in any direction? The "actual dimensions" are also printed on the box, but in teeny tiny numbers. By pulling the old one out of the furnace, I could find the real size - 15 3/4 x 24 7/8 x 4 3/8, if you are interested.

This is why handymen charge an arm and a leg: nothing about home construction makes any sense.

The all-important MERV rating? MERV stands for "Minimum Efficiency Reporting Value".

I feel so much better informed, knowing that.  Don't you?


melissa said...

Still wondering about the filter lasting a year. That's amazing. Are you talking a disposable one, or one that you wash?

Our disposable ones last 3 weeks!!! Way too many animals! :)

Diane said...

The disposable ones. The furnace is both new (2009) and high efficiency. The furnace guy did say that with the asthma, I could probably change it every six months or so.

WhiteStone said...

Our high efficiency uses 20x25x5. Yep. Have to squeeze the new filter ever so slightly to get it to slip into place. Ours lasts 6 months. I buy them in three-packs online as they are horridly expensive at the local store and half the time they don't have them in stock.