Boilers for Consumers

ENERGY STAR qualified boilers have an annual fuel utilization efficiency (AFUE) rating of 85% or greater. They achieve greater efficiency with improved features, including:

• electric ignition, which eliminates the need to have the pilot light burning all the time
• new combustion technologies that extract more heat from the same amount of fuel
• sealed combustion that uses outside air to fuel the burner, reducing draft and improving safety

You may also be interested to know:

• You can get better heating and cooling performance at home with ENERGY STAR home sealing (insulation and air sealing) and duct sealing.
• Consider regular maintenance to maintain your heating and cooling system performance.

Boilers originally qualified for the ENERGY STAR label in June, 1996.

ENERGY STAR qualified boilers have an annual fuel utilization efficiency (AFUE) rating of 85% or greater, making them 5% more efficient than non-qualified models. ENERGY STAR qualified models are more efficient than models that simply meet the federal minimum standard for energy efficiency.

Boilers Key Product Criteria: ENERGY STAR

Learn How a Product Earns the Label

What else should I look for when buying a boiler?

• Though these products can be more expensive to purchase up front, the cost difference will be paid back over time through lower energy bills.
• When buying new equipment, sizing and installation are as important as product quality.

These FAQs represent the top ten related to Boilers and the ENERGY STAR program.