Unit Heaters

Department of Energy

The Department of Energy (DOE) has regulated the energy efficiency level of unit heaters since 2008. Unit heaters are self-contained fan-type heaters designed to be installed within the heated space, such as rooms, garages, or factory floors. Unit heaters do not include warm air furnaces.



    For the purposes of this standard a unit heater is defined by 10 CFR 431.242. Unit heaters manufactured on or after August 8, 2008, and distributed in commerce, must meet the energy conservation standards specified in the Code of Federal Regulations, 10 CFR 431.246, which states that it shall (a) be equipped with an intermittent ignition device; and (b) have power venting or an automatic flue damper. To ensure the implementation of the current standards for covered appliances and equipment, DOE has published certification, compliance, and enforcement regulations for these products and equipment in the Code of Federal Regulations (CFR) at 10 CFR part 429


    For further guidance or to submit questions related to the implementation of this standard, visit the Guidance and Frequently Asked Questions page.

    There are no test procedures for unit heaters because the energy conservation standard is a design standard.



    Not currently an Energy Star certified product.

    Current Product Specifications:


    In Development:


    Applying for Energy Star:

    To qualify a new product, contact an EPA-recognized Certification Body (CB) to have the product's performance certified. A list of EPA-recognized CBs, as well as an overview of EPA's third-party certification procedures, is available at Third-Party Certification.

    More Information: