What temperature do you leave your home at
Today, I had my furnace guy come for the annual check-up, cleaning etc. I've known the guy for many years. I was telling him that next year we would be spending winter in the South and was planning on...
Forum Discussion
Sam Spade wrote:Huh? We have a high efficiency gas furnace and the heat exchangers are definitely not stainless. Thank you Carrier for replacing them when they rusted out. We're just waiting for them to rust out again... And we've never left the house for any long periods in the winter.almcc wrote:
it gets the high efficiency by condensing the water out of the flue gas, comments about rusting in these furnaces are incorrect (bogus).
Close but not quite.
It gets the high efficiency by capturing most of the heat from the flue gasses with a more elaborate heat exchanger. A side effect of that is condensing out more moisture.
But you are essentially right.....about the combustion components which are stainless steel and won't rust.
The entire unit, however, is NOT rust proof and if the general environment gets really moist, so will the cabinet and other components outside of the combustion path. Hopefully none of them would rust to the point of failure though.
