Presently, federal guidelines require manufacturers to produce fossil-fuel burning units that have an efficiency rating of at least 95 percent.

Question

Quizplus · Accepted Answer

As of my last update in 2023, federal guidelines in the United States do not require all manufacturers to produce fossil-fuel burning units with an efficiency rating of at least 95 percent. Efficiency requirements vary by type of equipment and are generally not as high as 95 percent for all categories of fossil-fuel burning units.

Presently, Federal Guidelines Require Manufacturers to Produce Fossil-Fuel Burning Units