I see many of these being sold at Home Depot and other home improvement centers and was wondering whether using these filters would put too much stress or strain on the air circulation fan, the furnace and the central A/C system at all? I'm talking about the vents only inside the house and not the ones outside.
I'm thinking that these systems are designed with being able to perform without any obstructions in the vents and while these filters are supposed to let sufficient air through, if I place them in very vent in my house, perhaps that might impose too much strain on the circulation fan, the furnace and the central A/C?
Thoughts? Thanks for your time and courtesy.