I just moved into a house and it has 2 electric heat pumps and 2 air movers - I guess that's what they are. I assumed they were backup furnaces, but I don't really understand after looking at the manual http://www.tappan.net/Literature/514b.pdf
This is my first time having heat pumps in a house.

Anyway, the current filters are size 19.75 x 22 x 5.25
I can't find that size anywhere locally or online. Is it OK to just use a 20x22x4 or 19x22x4, or does anyone know where I can order these filters from?

Thanks in advance.

What brand? You will probably have to order this form a heating company.

Sorry, meant to include that. The brand of the unit is Tappan B4VM-X36k-B, made by Nordyne. I didn't pay attention to the brand of the filter when I checked the size. I'll have to check that tonight.

Hi go to granger in the web register and go to filter you can desin anny size you want

Have you tried Home Depot or Lowe's for these air filters? They carry a lot of different sizes.

That is a funky size, what else is written on the filter, like a brand name or number?

It is probably a April air or space guard filter.

Sounds like a Trion Airbear too.

It looks like an original filter from the manufacturer? The only name on the filter is Nordyne and it has a part number. I guess I'll try and go through them. I'll check out the other options you all have listed as well.