Having decided all the other factors for a new home install I need to ask forum participants for their view on one aspect of filtering options.
I'm going with a 5 ton Trane XL19i and either an XV80 or XV90 furnace with three zones in a 3139 sq ft single story. I believe it will have 2 returns (2 or 3).
The configured system has a single Aprilaire 2200. I've read in another posts that a system this large might reduce the effectiveness of a single air filter, and another post mentioned the possibility of using 2 filters. Is this possible or effective? What other options would be recommended to achieve good IAQ? I've pretty much ruled out EACs and UV.