Product FAQ
Frequently asked questions about products
Air Filters
- My filter is 4" thick and yours is 5". Will it fit?
- What is a "MERV" rating?
- How do I measure my air filter?
- How do I choose the correct air filter?
- How To Install AprilAire 201 or 401 Filter
- I don't see my air filter size listed. Do you make custom filters?
Water Filters
- How Often Should I change My Pool / Spa Filter?
- How To Remove A Stuck Whirlpool Filter
- How To Remove Trihalomethanes (THMs) From Drinking Water
- Stuck EDR1RXD1 (W10295370) Filter
- Quick Connect Fittings
- I know my refrigerator model number; what refrigerator filter do I need?