Yes, even in warm weather, when you’re likely to be using your air conditioner ... Due to their pleats, filters such as the Honeywell Ultra Efficiency filter, have more square inches of dust ...
It did best in our heating tests, and it can be used year-round since it works as a fan and an air purifier ... Space Heater - See at Amazon Quietest: Honeywell ThermaWave 6 Ceramic Space Heater ...