Both have the same thermal properties, so in that instance, both are equal.Originally posted by l•k
Stainless Steel and aluminized-steel heat exchangers both carry limited lifetime warranties (in many cases). Suggesting that SS=aluminized.
Yet in many brands only the units in the higher-end have SS, suggesting that SS is better.
I M confused.
SS will resist corrosive atmosphere somewhat better then aluminized steel will, so if you have a corrosive atmosphere, SS is superior.
If the furnace is dual piped for outside combustion air, this eliminates the possible corrosive atmosphere condition for the combustion side of the heat exchanger making them equal again (unless you live next to a chemical plant ).
If dual piped, there are few instances that I can think of that SS is superior to aluminized.