FEMP's acquisition guidance for residential boilers and the associated ENERGY STAR efficiency requirements apply to natural gas boilers with an input rating of less than 300,000 Btu/h. Commercial boilers (i.e., those with an input rating of 300,000 Btu/h or greater) are excluded. This acquisition guidance was updated in December 2018.
Purchasing Energy-Efficient Residential Gas Boilers | Department of Energy
Purchasing Energy-Efficient Large Commercial Boilers
fabricated, and installed to recover the waste flue gas energy from a natural gas fired boiler. The recovered energy is used to preheat boiler makeup water and combustion air. Preheating makeup water, using the energy in the stack flue gas, increases boiler efficiency 6 percent to 8 percent annually.
For a gas boiler to meet Boiler Plus requirements it must be at least 92% efficient (ErP), include time and temperature controls and feature one of weather compensation, load compensation, flue gas heat recovery or smart controls. Why is boiler efficiency important? Boiler efficiency is important for a
The Natural Gas Act of 1938, as amended, requires any person who wishes to engage in the import and/or export natural gas, (including liquefied natural gas, compressed natural gas, compressed gas liquids, etc.) from and/or to a foreign country; to first obtain an authorization from the Department of Energy.Within the Department of Energy (DOE), the Office of Regulation, Analysis, and
Energy efficiency upgrades and a new high-efficiency heating system can often cut your fuel bills and your furnace's pollution output in half. Upgrading your furnace or boiler from 56% to 90% efficiency in an average cold-climate house will save 1.5 tons of carbon dioxide emissions each year if you heat with gas, or 2.5 tons if you heat with oil.
FEMP has calculated that a 3,000,000 Btu/h gas-fired hot water commercial boiler meeting the required combustion efficiency level of 95.0% E c saves money if priced no more than $79,100 above the base model. The best available model saves the average user more: $94,300 in lifetime energy costs.
What is ErP? Boiler Efficiency Explained | Boiler Guide