Tankless Water Heater Venting With Furnace

Special stainless steel pipe.

Tankless water heater venting with furnace.

To test for proper water heater venting. 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. Tankless water heater venting features. The navien npe tankless water heater is available in two models the s and the a read more.

The tankless heater cannot share vent piping with any other appliance and it cannot use a masonry chimney flue for venting. The vent pipe must be made of stainless steel designed for venting corrosive gases. 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. Tankless units withstand below freezing temperatures.

It struck me that the furnace has quite a large vent that should be able to handle the water heater exhaust but i would like your thoughts. Allow water heater to run continuously for 10 minutes. Indoor tankless water heaters draw in outside air. If water heater and a gas furnace share the same vent reduce the thermostat setting for the furnace so it does not run during the test.

See the use and care manual for important information regarding the venting installation and materials for your tankless water heater. You do have way more options with electric than with gas or propane but the issue generally is the gpm. Tankless water heaters are vented in two ways. Run enough hot water for the water heater start heating.

Tankless water heaters don t always need two ventilation pipes even for direct vent units. Tankless water heaters can be vented in two ways. Outside tankless water heaters free up indoor space. No they don t need to be vented.

However the key here is to install the vent pipe in the size required by the water heater. Facts about tankless water heater venting. Read more problem solved. Venting tankless water heater into furnace exhaust i had been considering a tankless water heater but installing the vent seemed like it would be more expensive to install than the water heater.

Most of the time tankless water heaters are side vented out of a wall not vented through the roof though roof venting is allowed as long as the total length doesn t exceed the specified maximum the large and modulating burners on tankless units usually require a dedicated 1 1 4 gas line from the regulator meter and the water heater too. This is because most homes have water heaters and furnace sharing the same exhaust vent. Gas tankless water heaters don t have to use indoor air for combustion. If you have issues with where to place a tankless water heater due to venting concerns then your best bet may be to get an electric tankless water heater.