Check out this great article in PME about Federal Regulations shaping new era for boilers and water
Boiler manufacturers continue to watch the calendar because 2021 is fast approaching. In 2016, the Department of Energy finalized new standards for residential boilers, raising the minimum efficiency levels to 86% (up from 84%). The standards will take effect Jan. 15, 2021. The revised national minimum annual fuel utilization efficiency requirements and new maximum standby and off-mode electrical consumption standards in the final rule are: -Gas hot water boilers — 84% AFUE,
