On Monday, August 10, 2020 at 4:47:46 PM UTC-4, Dave Smith wrote:
> On 2020-08-10 4:34 p.m., Cindy Hamilton wrote:
> > On Monday, August 10, 2020 at 4:18:45 PM UTC-4, Dave Smith wrote:
> >> On 2020-08-10 3:05 p.m., Cindy Hamilton wrote:
> >> )
> >>>
> >>> Heh. We have a sheet of paper affixed to the furnace plenum by a magnet
> >>> and a pencil hung nearby with a piece of string. At least we know how
> >>> late we were.
> >>
> >> If you went by the calls you get from duct cleaning services saying that
> >> it is time to get them done again it would probably be an adequate
> >> reminder for the filter change.
> >
> > We don't get those calls. Benefit of not having a landline.
>
> I got one on my cell phone a couple nights ago.

Perhaps I do too. I rarely answer unless I recognize the number.

> >
> > We have two filters. One serves as a prefilter. It uses something like
> > this:
> >
> > <https://www.grainger.com/product/5W498>
> >
> > We try to change that once a month.
> >
> > The other filter is a big pleated job. I think we change that twice a year.
> >
>
>
> When I got my new furnace and AC a few years back I asked the installer
> about filters. He said to just get the cheap ones and change them monthly.

My asthmatic husband is in charge of air quality.

Cindy Hamilton