- Any one have a High efficiency boiler, has your fuel consumption gone down, if so how much % wise?
- It takes more energy for a furnace in a home to heat 70F air instead of 100F air. Likewise a high efficiency boiler's Air Vent Intake with air of -10F in winter cannot possibly be 92% efficient???????? (Those AFUE values are probably done in spring like weather?)
- Actually I'm a little suspicious why high efficiency boilers need an air intake but not regular cast iron boilers, my point of vue is they need cold air from the air intake to promote condensation which defeats the purpose and any $ savings???