Furnace filter???
#1
01-03-21, 01:26 PM
Furnace filter???
We have a older furnace that was installed when the house was built in 1986. Would anybody know what the maximum Merv rating of a filter that I should use. I have read that some furnaces could be damaged if a too high of a Merv rated filter is used. Thanks!
#2
01-03-21, 01:37 PM
Member
Don't worry about the Merv rating. You want to protect the innards of the furnace, not the air quality you breath. Get pleated filter with as much surface area as possible. If you spend more than $10 a filter, you over spent.
#3
01-03-21, 02:20 PM
Member
Best to start with checking the heat rise and pressure drop across the furnace.
But the filter isn’t there for indoor air quality. It’s there to protect the equipment from dust and debris.
Something to bring up, that a lot of my customers have asked. Is this something that you want to due because of covid?
But the filter isn’t there for indoor air quality. It’s there to protect the equipment from dust and debris.
Something to bring up, that a lot of my customers have asked. Is this something that you want to due because of covid?
#4
01-03-21, 02:50 PM
No, not really to do with the virus.. Just looking to buy some filters. I was using a MERV 9 for quite sometime and need to get more filters. 9 seems hard to find now so was wondering if the 10 would be ok, or if I should go with and 8 since it is such an old furnace.
#6
01-03-21, 03:11 PM
The filter size is a 16x20x1. As far as the furnace size.... I really don't know, or how I would find the size of it. My father used to handle all that before, now just me and my mother trying to figure it out...lol
#7
01-03-21, 04:01 PM
I was using a MERV 9 for quite sometime and need to get more filters. 9 seems hard to find now so was wondering if the 10 would be ok, or if I should go with and 8 since it is such an old furnace.
The purpose of a furnace filter is to protect the furnace. That being the case, it's unnecessary to get a filter above MERV 4. 16X20X1 is not an rare size. Look online (You know where.) and buy 6 or 12.
If you have a need for filtration for health reasons, I suggest getting an air purifier.
