Mandated by the US Federal Trade Commission, new boilers must display their AFUE to make it easier for homeowners to compare efficiency rates. The Energy Independence and Security Act of 2007 requires that all residential gas-fired boilers and oil-fired boilers manufactured after September 1, 2012 have an efficiency of 82% and 84%, respectively.

ENERGY STAR Most Efficient 2020 — Boilers. The ENERGY STAR Most Efficient 2020 designation recognizes the most efficient products among those that are ENERGY STAR certified. These exceptional gas and oil boilers represent the leading edge in energy efficient products this year.

Ourboiler reviews reveal the best boilers so you don't waste your money on a system that's not right for your home. Discover the most reliable gas and oil boilers including heat-only and combi boilers, based on thousands of people's experiences.

In general, gas boilers are very durable, and rarely break down. Keep in mind that properly maintained boilers (both gas and oil) can last much longer: 25-35 years. Some homeowners have Weil-McLain boilers that last 75 years before being replaced! Repair costs for both oil and gas boilers are about the same, and average $300-800.

The cost is due to the excellent efficiency, large capacity and oil-burning construction. Best fit: As you can see from the price, oil boilers are the most expensive type. This is one of the reasons that they are only used in the Northeast where LP and natural gas aren’t as plentiful as they are in most regions.

Oil and gas prices both fluctuate, but generally gas is cheaper than oil, so you should save some cash with gas! Go Green: Natural gas is undeniably much greener than oil. The Annual Fuel Utilization Efficiency (AFUE) rates natural gas boilers at an estimated efficiency of 90 percent!

U.S. Boiler Company takes energy efficiency seriously. Our award-winning MPO-IQ™ cast iron oil boiler has the best efficiency of any boiler in its class, with an AFUE rating as high as 87%. When you purchase an oil or gas boiler from us, you know you’re getting the best in comfort, durability and safety.

Oil-fired boilers are common in areas that have limited access to natural gas. If you buy a oil-fired boiler, you’ll need heating oil delivered and stored in tanks like the one above, and your ...