AirVantage GRVM97 modulating, multi-speed furnace was designed to provide premium efficiency at an affordable price. It features AirVantage's superior heat exchanger design for the primary heat exchanger and an additional secondary heat exchanger to ensure that your energy dollars aren't being vented out of your home. This combination results in a furnace that converts 97% of the energy used directly into heat for your home, AirVantage's highest mark for a modulating furnace. Instead of a standard multi-speed blower motor, the GRVM97 utilizes an ECM motor, which uses less power and provides smarter circulation. The value doesn't end at efficiency, the GRVM97 features many different connection options to reduce installation time and a self-diagnosing control board to expedite maintenance. If you're looking to cut your energy bills and improve your comfort without breaking the bank, your search stops with the GRVM97.