Quote:
Originally Posted by jeffh
Your original venting will be over-sized for your hot water heater and will thus need a new stainless steel liner to be installed inside the old one, unless you opt for a new high eff hot water heater as well. New PVC venting will need to be installed for your furnace(s).
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1) Are Furnace and Water Heater T-ed into the same exhaust line?
2) Rather than installing PVC for the Furnace Exhaust line, can you install a non corroding liner for them?