This is the perfect unit for a bedroom or office and has the prestigious Energy Star rating. Quiet and efficient, the Alen 350 air purifier cleans rooms up to 800 square feet, though allergy sufferers will want one unit for every 400 sq feet to achieve a... Read More

This is the perfect unit for a bedroom or office and has the prestigious Energy Star rating. Quiet and efficient, the Alen 350 air purifier cleans rooms up to 800 square feet, though allergy sufferers will want one unit for every 400 sq feet to achieve at least 4 air changes per hour. With the Alen 350, you get HEPA filtration at a cost much lower than comparable models. Short description