In the summer months especially, tower fan and air conditioner purchases hit an all-time high — and for good reason. With several heatwaves hitting parts of the country, these pieces of home tech are more necessary than ever. But with so many folks suffering from asthma and year-round allergies, the summer is one of the most anxious times of year for some.

Luckily, there are actually a few top-rated tower fans and air conditioners that serve double duty as air purifiers, blocking out harmful allergens, dust, pollen, pet hair and more. In fact, several are certified asthma- and allergy-friendly by the Asthma and Allergy Foundation of America. Check out our top five picks below from brands like Dyson, LG, July and more.

Read the full article on In The Know by Yahoo