Furnaces heat and circulate warm air in the winter and also circulate the cool air from the air conditioning in the summer. The furnace and air conditioning units are designed to work together. When the furnace is properly matched with an air conditioner, you enjoy maximum efficiency and an extended system life.

A furnace's heating ability is measured with an Annual Fuel Utilization Efficiency (AFUE) percentage. Basically an 80% AFUE furnace will utilize 80% of the heat generated, to warm the indoor air. The remaining 20% of the heat is wasted in exhaust gases. A higher AFUE percentage, such as a 95% AFUE, indicates a more efficient furnace.

York's Affinity YP9C is the highest rated gas furnace in the industry (up to 98% AFUE). The EnergyGuide label outlines the energy use and efficiency of major home appliances. With its industry leading efficiency, the Affinity YP9C EnergyGuide rating exceeds government standards - insuring exceptional quality and low energy use.