Can you vent tankless water heater through wall?

Tankless water heater design allows for multiple venting options. Tankless water heaters can vent through the roof or a side wall, creating more flexibility and options for placement. Traditional gas tank water heater require venting through the roof.

Do tankless water heaters need fresh air?

1. Gas tankless water heaters don’t have to use indoor air for combustion. Tankless water heaters can be vented in two ways: power-vent or direct-vent. Power-vent units use indoor air for combustion and simply vent the exhaust to the outside.

Can you install a tankless water heater on an interior wall?

Electric tankless water heaters are designed to be installed indoors in the garage, basement, or interior wall. Both natural and propane gas tankless water heaters have indoor and outdoor models. Indoor models can also be installed in the garage, basement, or the exterior wall’s interior side to provide venting.

How hot does water heater vent pipe get?

If a water heater is set to store water at 140 F to minimize Legionella bacteria growth, the flue gas temperature will be about 160 F when the heater is new. As scale builds up and the heater efficiency falls off, the flue gas temperatures can easily increase to over 350 degrees F.

How much ventilation does a gas water heater need?

As a general rule, water heaters need 50 cubic feet of air per 1,000 BTUs/hr. For example, a water heater with an input of 40,000 BTUs/hr should be in a room (often the garage) with at least 2,000 cubic feet of air.

What is the difference between direct vent and atmospheric vent?

Basically, the difference between the two is that the power vent water heater removes combustion gases from the atmosphere via a powered venting fan, while a direct vent water heater vents these gases into the outdoor atmosphere using a chimney or exhaust pipe.