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Senior Moment
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1,904 Posts
Discussion Starter · #1 ·
This may be a stupid question, but why can't a tankless be vented through a chimney like a standard water heater or boiler ?:blink: This would make installation a lot easier in a lot of waterheater to tankless switchover's.
 

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Professional Bullshioter
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6,092 Posts
If they chimney serves no other appliances. (which is highly unlikely)

Run the new vent from the tankless all the way out of it. I have done that in the past.

Then I just made a top for the chimney with flashings on it for the PVC vent(s) and intake(s)
 

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Always Something
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1,369 Posts
This is true. The limitations in vent length and turns is illistrated on the install manual. If one goes beyond set limits it causes havoc in more than two or three different tankless systems. Pain in the arse to trouble shoot down the road.
 
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