Unfortunately, replacement filters seem to be in limited supply, which is inconvenient. Coway Airmega 250: This is another great option we've tested from Coway. The 250 was one of the best ...

PS Photography / Jessica Andrews For most people, allergy season means a few extra boxes of tissue and several trips to the car wash.

Coway’s Airmega models are some of the best in the biz, and right now two are mega (pardon the pun) marked down over at Walmart. You can save upwards of $100 on each one, making now the perfect ...