Hot water heater exhausts into failed chimney; repipe or repair?

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soparklion11

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My house has a masonry chimney with two flues, one for the gas furnace with active exhaust and the other used to service the hot water heater's passive vent. The flue from the hot water water heater collapsed and was invaded by squirrels.

When the squirrels were removed, the chimney was capped as my roofer recommended that rebuilding that section of the chimney was cost prohibitive; I have a slate roof and it is ~30ft off the ground.

Any thoughts on how to vent the gas water heater? I'm told that my options are to either rebuild the failed flue (30 ft up, can't stand on the slate roof), or to insert a pipe so that the passive hot water heater vents above the level of the furnace.
 

oldognewtrick

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What about converting to an electric water heater. Cheaper than adding a flue or restoring the chimney.
 

billshack

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you can combine both in the same flue , what sizes are the appliances , btu and diameter , also the size of the flue .
 
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