Air Cleaner Sizing and Selection
The best size air cleaner is the largest that will fit. The larger the air cleaner, the greater capacity for particulate. This reduces the need to clean as often. The larger air cleaner will also have a slower air velocity that will increase the cleaning performance.
Fitting the air cleaner to the current duct work can be a primary consideration. Not recommended is using the small F52F for a large house. The F52F are sized large and small. The small F52F maybe used in pairs for large house.
The large F52F1048 (2000 cfm) are sized for a large house with a single large heating and or AC system. The F502F1048 (1000 cfm) fit a condo or small house.
Running the furnace-AC blower on constant is recommended. Most thermostats have an Auto-On switch. Setting the switch to ON will keep the blower running and purifying the air. The more dust collected by the air cleaner results in less dust on the furniture.
The F52F has an air resistance similar to the standard 1" filter. Thus an F52F of the same size as the heating systems 1" filter is a good reference. Review the F52F Product Data for installation instructions.