To make venting easiest install your tankless water heater on an outside wall.
Navien tankless water heater venting through roof.
Tankless water heater venting through roof is not necessary.
Traditional gas tank water heater require venting through the roof.
Tankless water heaters provide either horizontal venting or vertical venting which is also referred to as tankless water heater venting through roof.
Tankless water heaters allow for either horizontal venting out a side wall or up through the roof.
Technically you can vent your tankless heater through the chimney but only in certain circumstances.
Tankless water heaters use fans to blow exhaust from the unit horizontally allowing vents to terminate on the side of a house.
When venting navien npe tankless water heaters it is important that you do not start the vent run with a street elbow at the vent collar.
To do this two critical measurements must take one on the ceiling above the water heater and one that is the distance from the attic floor to the roof.
Installing your tankless water heater for easier venting.
Whenever we are installing a gas water heater building codes require that there should be a ventilator out of the room through the attic and out through the roof.
The biggest issue is that the condensate is very acidic and will corrode the masonry of a chimney.
The navien common vent system provides an easy way to install the vent system for up to 8 navien npe water heater or nhb nfb boiler units.
By contrast tankless water heaters vents can terminate on a side wall because their combustion fan blows exhaust from the units horizontally.
Gandy installations saves customer enough space for a refrigerator.
It really is not a good idea.
If the unit is installed on a basement wall the vent pipe can be run up just a few feet and then vented out the side with the use of a 90 degree elbow.
Tankless water heaters can vent through the roof or a side wall creating more flexibility and options for placement.
Storage tank propane water heaters vent through the roof using galvanized steel b vents because they work through natural draft allowing the hot exhaust air to rise up and out of the facility.
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