Keep air fresh and circulating with this Venmar EA1500 air exchanger. It purifies stale air by using a washable aluminium mesh filter that captures many allergen particles. The unit not only exchanges inside air for fresh air from outdoors, but also reduces humidity and condensation. This Venmar air exchanger is well suited to spaces up to 2,000 sq ft in size, and it's easy to install. It also offers multiple modes to choose from. Set the exchanger to minimum, maximum, or recirculation to meet your home's needs. A maintenance light lets you know when the device requires attention. The unit moves air at up to 185 CFM (cubic feet per minute).