Changing Furnace Filters

FlowerBear · ‎03-24-2018

Do you change yours regularly even if it doesnt look dirty? I didnt change mine for about 3 months since each time I checked it it had no dirt or dust on it that I could see. Then I read you should change a filter every 30 days whether it has dust on it or not!

Peaches McPhee · ‎04-19-2010

I've never seen a clean filter after a month of furnace use. Do you live in a warm climate where the furnace is not on much?

-- pro-aging --

Rochester, New York

FlowerBear · ‎03-24-2018

No but each since each time I looked at it, it was clean I didnt know you should change anyway!

RedTop · ‎09-01-2010

Yes, I do change ours monthly.

There is always dust trapped in the filter, some months it’s heavier than others. I’d rather replace a cheap furnace filter each month than pay for a service call.

shaggygirl · ‎11-24-2011

@FlowerBear wrote:
No but each since each time I looked at it, it was clean I didnt know you should change anyway!

@FlowerBear

I've never heard of that business about changing it anyway. I look at it and make a judgement call. On average I'd say every 2 months it's changed.

Kachina624 · ‎03-10-2010

My evaporative cooler doesn't need a filter but I change the furnace filter about every 3 months in the winter. It always needs changing.

New Mexico☀️Land Of Enchantment

fthunt · ‎12-24-2010

I have an add-on 'box' attached to the furnace for cleaning the system. Filters are large - I change filter with the seasons - 1 - Fall....1 in the Spring that goes pretty much through the summer. Furnace isn't on in the summer - so less dirt and dust.

Pook · ‎03-20-2010

We usually change ours every fall.

Bhvbum · ‎07-18-2010

@FlowerBear wrote:
No but each since each time I looked at it, it was clean I didnt know you should change anyway!

I have 4 air conditioner filters (big ones for my AC returns) in my house (I don't have a heat pump, I have an old house with radiators for heat in winter, but do have big AC units just like a heat pump with units in the yard, that take filters)

I can always see by the filter that they need changing, but this is only for the summer. Mine are for 3 mos but I change every 2 mos and they look ready to change. I also date them when I put a new one in. The dust, etc certainly isn't invisible so your house may be super insulated and just doesn't get that dusty.