General Filter FAQ
- How do I contact Second Nature?
- How do I know what size filter I need?
- Where are my air filters located?
- What is HVAC, anyway?
- How will dirty air filters impact my HVAC system?
- Will regularly changing my home's air filters really help lower my energy bill?
- The air in my home is already clean ... Isn't It?
- Why should I change my filters?
- How often should I change my filters?
- Can my filter have more than one size? How do I know my size?
- What is MERV? Is It the same as MPR and FPR?