With the furnace off, the missing air filter is not an issue.

If you turn the furnace back on, the missing air filter will
allow the stupid cat hair to clog the furnace and the air
conditioning evaporator. And those are expensive repairs.

I suggest call a local heating and AC company for the system
clean and check. Ask the tech to sell you a couple good air
filters for your system.

--

Christopher A. Young
You can't shout down a troll.
You have to starve them.
..

"Kbalz" wrote in message
oups.com...
: Hello, I just took possesion of my home this week. I went in
the
: basement, and the furnace was making a horrid high-pitch sound.
It
: was the air filter, a 3-month Anti-Allergy one that was
completely
: full of dumb-cat air.. So I took out the airfilter (AF), and
the
: noise stopped.
:
: I went to local store to buy new one. I bought wrong size...
too
: long. It fits in the AF slot, but it sticks out about 2
inches each
: side.
:
: I took out the AF, and put the metal guards back on the insert
slot.
: So, my furnace has no AF. My AC/heat system is list as OFF, I
will
: not be living there for another 5 days.
:
: If the system is off, is no AF ok? Its been no AF for 2
nights. I'm
: panic-ing that my place will burn down now lol. Its a long
drive,
: several hours. Will it be okay for another 48-hours? Thanks,
: