Tankless Hot Water Heater Exhaust Vent

Tankless water heater venting style permits for multiple emission choices.

Tankless hot water heater exhaust vent.

All indoor tankless gas water heaters must be vented vertically or horizontally to the outdoors using factory approved venting material no other venting material is permitted. 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. With a condensing tankless water heater you don t need metal venting. Tankless water heaters are vented in two ways.

By contrast tankless water heaters vents can terminate on a side wall because their combustion fan blows exhaust from the units horizontally. Putting in a tankless water heater outside clears up indoor area and needs no further emission. Direct vent units pull in air from outside the home or building and have two vents one for intake and one for exhaust. Remember the exhaust is really hot and won t have much space to cool down.

Non condensing tankless water heaters typically transfer to the water only about 80 percent of the heat they generate. This configuration allows tankless units to fit in smaller spaces. To get the most out of your tankless water heater you need the right vent and termination kit. Tankless water heaters blow exhaust from the heater horizontally with the use of fans thereby permitting vents to end on a different position of your house.

Venting vent kits. The remaining heat creates a hot exhaust gas that requires metal venting typically stainless steel or thick aluminum. Direct vent and power vent. See the use and care manual for important information regarding the venting installation and materials for your tankless water heater.

Types of tankless water heater vent termination kits.