Preparing questions in advance can help patients to have more meaningful discussions with their physicians regarding their conditions. Patients may wish to ask their doctor the following questions related to HEPA filters:

1. Would I benefit from the use of a HEPA filter or vacuum?
   
   
2. Can you explain to me how a HEPA filter works?
   
   
3. Other types of filter are less expensive. Would I benefit at all from using one of those?
   
   
4. Where can I purchase a HEPA filter or vacuum?
   
   
5. Can you recommend some effective models?
   
   
6. What should I consider when choosing a HEPA product?
   
   
7. Does it matter if I choose a HEPA-type filter or a True HEPA filter?
   
   
8. I have been using a HEPA filter for several months, why are my indoor allergies still acting up?