These home heating systems are incredibly energy-efficient. With time-tested energy-efficient technology, highly-durable materials and spot-on manufacturing your will be more comfortable than ever during the coldest days of the year.

AFUE Rating: Annualized Fuel Utilization Efficiency, or the percent of heat produced for every dollar of fuel consumed. Like the miles-per-gallon rating on your car, the higher the AFUE rating, the lower your fuel costs.

A furnace with an AFUE of 96 will convert 96% of the gas or oil it consumes into useable warmth. Any gas furnace with an efficiency of 90% or higher is considered to be a high-efficiency heating system.