How much does a Hepa Air filter cost?
i have asthma and was told that a HEPA air filter would help a lot, especially since i keep two parakeets in my room and they can cause dander. so, i wanted to know how much they cost and is an air purifier the same thing? I saw air purifiers at walmart and some said that they produce hot air and other said that they produce cool air? which should i get? hot or cold? thanks!