Tankless Gas Water Heater Vent Pipe

Tankless water heaters are vented in two ways.

Tankless gas water heater vent pipe.

Select either an adapter of three inch or an adapter of four inches depending on what water heater model you decide. Does a tankless water heater need venting. 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. If you have a gas fueled tankless water heater that is installed inside the house it needs to be vented to the outside.

Direct vent water heaters can use two separate pipes for intake and exhaust but some manufacturers offer concentric venting a single pipe that contains an inner exhaust vent and an outer intake vent. It doesn t matter if the gas is natural gas or propane this fact remains the same. You will need less vent pipe that way even though you will need more water and gas supply piping. Since the stainless steel vent pipe is much more expensive than the gas supply and water supply piping it makes sense to move the tankless heater closer to where the vent will leave the house.

All connections on the gas water heater power vent system pvc vent pipe must be air tight require primer and cement for pvc cpvc abs pipe slope of the pipe always check manual but for non condensing installations not high efficiency water heater level or slightly up slope towards the exterior should be ok. Tankless water heaters don t always need two ventilation pipes even for direct vent units. Vent adapter is needed to connect the water heater which is tankless to the exhaust hose. With rinnai common venting up to 8 tankless water heater units share the precisely engineered accessories can add even more reliability convenience and flexibility to rinnai tankless water heaters.

In fact tankless water heaters save up to 16 square feet of space. Plastic condensing vent pipe extension for rinnai super high efficiency tankless water heaters 224080pp the home depot. This configuration allows tankless units to fit in smaller spaces. Direct vent and power vent.

This stainless steel 3 in. Direct vent units pull in air from outside the home or building and have two vents one for intake and one for exhaust. Concentric direct vent termination kit is designed for use with rheem ecosense mid efficiency tankless gas indoor direct vent units. Because tankless water heaters require pvc or special stainless steel piping as the vent material which is much more expensive than copper pex or cpvc a short venting run is better for both the heater itself as well as your savings so many homeowners choose to move the location of their heater closer to an outside wall and run water lines to it instead.