Home ventilation keeps your indoor areas comfortable and healthy. It prevents the air from becoming stagnant and moist, which may cause unpleasant odors, mold, and mildew. If you live in an airtight home, you’ll likely need a mechanical ventilation system to keep fresh air circulating. This guide with help you understand more about HRVs and ERVs, two popular types of ventilation systems that licensed HVAC contractors can install on your property.

What’s the Difference Between HRVs & ERVs?

HRVs

HRVs, or heat-recovery ventilators, have two air ducts. One pulls fresh air into the room, and the other one moves stale air outdoors. Both incoming and outgoing airstreams pass through a heat exchanger, which transfers the heat of one to the other without allowing the two to converge.

HRVs are convenient because you can adjust the fan speed to make the incoming air warmer or cooler, depending on the season. Additionally, you can use them to pre-cool air before it enters the HVAC system, which prevents the latter from overworking and require repairs from HVAC contractors. They also pre-warm fresh air, which reduces heating expenses.

ERVs

ERVs, or energy-recovery ventilators, use a similar duct system: one moves stale air out and another pulls fresh air in. The difference between these two ventilators is that ERVs control humidity by transferring moisture from one airstream to the other. In addition to making homes more comfortable, this feature retains warmth in the heat exchanger, promotes efficiency, and saves money.

ERVs are especially helpful during particularly hot and humid summers or cold and dry winters. During the warm months, they reduce humidity, which prevents mold growth, unpleasant odors, and upper respiratory conditions. During the cold season, ERVs keep some of the moisture in the intake air so that you won’t experience dry skin. 

Keep your home well-ventilated with air quality inspections and solutions from Moeller Furnace Co in Fort Dodge, IA. This HVAC contractor provides residential and commercial services, including heating installations and air conditioning repairs, to clients throughout Webster County. Call (515) 573-5831 to book an appointment for air testing, or visit their website to learn more about their products for keeping your home or business comfortable.