- Federal agencies are required to purchase products as designated or specified under this program
Where to Buy
Legal Requirements Lists federal requirements related to the purchase of this item, including applicable Federal Acquisition Regulation (FAR) requirements
Life Cycle Cost Savings
For most applications, energy-efficient furnaces have the lowest life-cycle cost. For example, EPA has estimated that an Energy Star-qualified gas furnace can save a typical user $995 in energy costs over the life of the furnace, while avoiding 15,325 pounds of greenhouse gas emissions.
An efficient product is cost effective when the energy costs saved over the life of the product exceed the additional upfront cost (if any) of the more efficient model. Energy Star considers both upfront costs and lifetime energy cost savings when setting required efficiency levels. Federal purchasers can assume that Energy Star-qualified products are life-cycle cost effective. On its Purchasing & Procurement page, Energy Star offers MS-Excel-based calculators to estimate how much money and energy you can save purchasing ENERGY STAR furnaces.
Contributes to meeting The Guiding Principles for High Performance and Sustainable Buildings
Energy Star notes that different gas furnace efficiency requirements and labels are used for different regions of the country. Certified gas furnaces in the southern half of the U.S., where homes require less heat, will be labeled with a unique “U.S. South” ENERGY STAR logo. Certified gas furnaces in the northern half of the U.S. will be labeled with the standard ENERGY STAR logo.
The ENERGY STAR Most Efficient program identifies the most efficient products among those that qualify for the ENERGY STAR in particular product categories. Product categories were selected and recognition criteria were established to ensure that products that receive this recognition demonstrate efficiency performance that is truly exceptional, inspirational, or leading edge. There are Most Efficient criteria for furnaces.
As of April 21, 2017, Energy Star specification for Furnaces version 4.1 has been finalized. Furnace models previously certified to Version 4.0 are not affected by this change. Version 4.1 removes the furnace fan efficiency (“e”) requirement and replaces it with the requirement that all ENERGY STAR furnaces must be equipped with an electronically commutated fan motor (ECM), encompassing both constant torque and constant airflow designs.
- The specification includes: Products that meet the definition of a Residential Furnace as specified within version 4.1 certification with the exception of products listed as excluded. Only non-weatherized furnaces approved for residential installation are eligible.
- Excluded Products: Furnaces intended only for commercial installation and/or with a rating of 225,000 Btu per hour energy or higher are not eligible for ENERGY STAR. Weatherized furnaces are not eligible for ENERGY STAR.