Why does a tankless water heater need a stainless steel vent?
Posted on | March 18, 2010 | 2 Comments
From what I understand a Rinnai tankless water heater needs a stainless steel vent. Why can it not use the vent from my old water heater?
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2 Responses to “Why does a tankless water heater need a stainless steel vent?”
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March 18th, 2010 @ 2:40 pm
There is no reason for a stainless steel vent as the vent will be doing the same job it always has.
April 28th, 2011 @ 6:03 pm
The only reason for the stainless steel venting is due to new heat exhaust. Most manufactures require 3/4″ gas line meaning more gas = more heat. Your typical tank unit runs on 1/2″ gas line. It’s more for safety reasons. Check the BTU’s you currently run and with new tankless unit what you would run.