What is a condensing boiler and why are they so efficient?
Nov 21 2017 · A condensing boiler on the other hand recovers the heat from the water vapor and puts it back into the boiler. This allows a condensing boiler to use less fuel to produce the same amount of heat. Same comfort less fuel lower bills. Consider the Annual Fuel Utilization Efficiency (AFUE) rating of a boiler which is a measure of its efficiency. A conventional boiler typically has an AFUE of 70-80% with learn More