The EPA-Certified Hydronic Heaters list contains EPA-certified Hydronic Heaters (HH) that meet the 2015 New Source Performance Standard (NSPS) for New Residential Wood Heaters, New Residential Hydronic Heaters and Forced-Air Furnaces at 40 CFR Part 60 (Subpart QQQQ) and are deemed to be EPA-certified until May 15, 2020. Some of these models were previously EPA qualified under the EPA’s Voluntary HH program which is no longer in effect. The Voluntary program has been superseded by the inclusion of HHs as an affected source under the 2015 NSPS when it went into effect on May 15, 2015.
Some models previously in the Voluntary program are not deemed EPA-certified under the NSPS because they were tested with the previous hydronic heater test method: M28 OWHH. However, the 2015 NSPS did provide a sell-through period for these models which gives manufacturers and retailers an opportunity to sell them until December 31, 2015. After December 31, 2015 the HH models listed on the EPA Qualified Hydronic Heater Sell Through List can no longer be sold in the United States.
- EPA Certified Hydronic Heater List (XLS)(8 pp, 30 K, April 2018)
- EPA Qualified Hydronic Heater Sell Through List (PDF)(1 pg, 122 K, July 2015)