I have a Lennox Conservator III G16 furnace, this furnace has a filter which is a "U shaped basket" that is placed around the intake of the blower. There are no store bought filters that are available for this, I have to buy a roll of filter material and I cut it to size and place it in the "basket" to change the filter. I have allergies and I want to use a filter that is made for allergies. I bought a re-usable filter that I can size to the return duct opening, but I'm concerned that the additional filter will cause the blower to have to work too hard, shortening the life of the blower.
I would like to keep the stock filter in place and add this extra filter. Or should I get rid of the basket filter and just use this new filter?
Does anyone have any advice for me???
Thanks in advance