You are probably right about the aluminum. I have always used Z-FLEX kit, which is stainless steel on certain types of propane decorative appliances. We usually have the homeowner hire a chimney guy to install a stainless steel liner for oil fired equipment that we install, before we will install it. So I wouldn't know how well aluminum holds up. But it seems to hold up pretty well in B vent.
Originally posted by hearthman
Yes, listed aluminum liners are approved for Category I gas appliances--no oil. However, they are a poor bargain. If you live in the deep South, it might hold up. However, up North, they might last 2-3 yrs. The problem is, most HVAC companys don't inspect their work every yr. once they're done. Sweeps do. That's why 90% of the sweeps only sell stainless steel. It's like throwing money away.
Pay a sweep to install a listed liner such as 316Ti or AL29-4C alloy.
Yes, you must reline the chimney both for code compliance and functionality.