I would like to clean up the air in my home for my daughter that suffers from allergies and asthma attacks here in the Northeast.
Which whole house Air filtration and exchange systems or components would you recommend that are effective and of modest cost? Should they be integrated into a Forced Air HVAC ducted system or separate? What about a mechanical media vs an electronic filter, or sticking with portable room HEPA filters?
So far the systems I have come across include Lennox PureAIr, AprilAire, and Therma-stor Ultra-Aire but I am still learning.