The more efficient the more fragile,costly
it will be to own, the variable speed DC motors they use to get the 90%+ are $600 rather than $75 as the old AC polarity motors are, sure they save while you run it only to be lost in $300+ induced draft motors, proving devices, $300 ignition modules, $400 circuit boards, etc etc, remember prior to 1078 did you ever think about the furnace? nope and if you did it was a thermocouple for $15 at ACE hardware anyone can install and 30+ yrs service, todays units never last 1/2 that long.
it will be to own, the variable speed DC motors they use to get the 90%+ are $600 rather than $75 as the old AC polarity motors are, sure they save while you run it only to be lost in $300+ induced draft motors, proving devices, $300 ignition modules, $400 circuit boards, etc etc, remember prior to 1078 did you ever think about the furnace? nope and if you did it was a thermocouple for $15 at ACE hardware anyone can install and 30+ yrs service, todays units never last 1/2 that long.
