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When I upgraded my HVAC system, the installer recommended an AprilAire filter box, I uses a 4" high pleated filter, each MERV-13 filter has around 16 pleats, so
by Johnny555 4y ago
When I upgraded my HVAC system, the installer recommended an AprilAire filter box, I uses a 4" high pleated filter, each MERV-13 filter has around 16 pleats, so if you unfolded it, it'd be around 10 feet long.
Comes with full warranty from the manufacturer, so I don't think it's going to shorten the lifetype of the system.
I wouldn't put a regular flat MERV-13 in an existing HVAC system, but the pleated ones have so much more surface area that they seem safer.