> you can upgrade a forced-air system to use better filters, which basically gives you a filter for your entire house.
This is a reason I really like our forced air system (New England house from the 50s): it can circulate and filter the air even without heating or cooling it. I have it run hourly for part of the day and it does wonders to keep the air fresh (i.e. we really notice when the system is off for some reason).
This is a reason I really like our forced air system (New England house from the 50s): it can circulate and filter the air even without heating or cooling it. I have it run hourly for part of the day and it does wonders to keep the air fresh (i.e. we really notice when the system is off for some reason).