Can I use my existing furnace ductwork for an HRV/ERV?

Yes, it is possible to connect an HRV or ERV to your existing furnace ductwork. If you are using your home’s current furnace ducting system, your furnace fan needs to stay on to ensure that fresh air gets distributed throughout your home. You can use the HRV or ERV control to turn on the furnace fan (this is known as interlocking).

Did you see a building science or energy efficiency term you did not understand? Check out our glossary.