Hello all
I currently has a gas water heater and a gas furnace. They share the same exhaust leading to the roof (see picture).
The water heater is getting old and shows sign of rust and little leak, thus I am looking to replace it immediately. I am thinking of switching to a tankless unit since the cost of the unit is modestly more expensive. The installation is somewhat hair pulling though. I read the tankless unit requires PVC exhaust and can't be shared with other units. Is that correct? What are are my options to minimize the number of retrofit I need to do to my current hook ups?
I would rather avoid making another hole thru the roof. The unit is in the garage and the gas hookup is on an interior wall, thus venting sideway thru a exterior wall is also problematic.
Any suggestion, ideas would be very appreciated
Many thanks
I currently has a gas water heater and a gas furnace. They share the same exhaust leading to the roof (see picture).
The water heater is getting old and shows sign of rust and little leak, thus I am looking to replace it immediately. I am thinking of switching to a tankless unit since the cost of the unit is modestly more expensive. The installation is somewhat hair pulling though. I read the tankless unit requires PVC exhaust and can't be shared with other units. Is that correct? What are are my options to minimize the number of retrofit I need to do to my current hook ups?
I would rather avoid making another hole thru the roof. The unit is in the garage and the gas hookup is on an interior wall, thus venting sideway thru a exterior wall is also problematic.
Any suggestion, ideas would be very appreciated
Many thanks