Tankless Water Heater Vent Requirements

Select either an adapter of three inch or an adapter of four inches depending on what water heater model you decide.

Tankless water heater vent requirements.

Outside tankless water heaters free up indoor space. These vents must be made of suitable materials and be kept clear of combustible materials. The water heater must be vented in accordance with the section venting of equipment of the latest edition of the national fuel gas code. Tankless water heaters are vented in two ways.

Proper venting gas and propane heaters emit carbon monoxide which must be vented outside. Tankless water heaters can be vented in two ways. American tankless water heaters venting. Tankless does not mean instant hot water contrary to popular thought a tankless water heater does not necessarily deliver hot water to your tap any faster than a conventional water heater.

In fact a tankless unit may be slower. Ansi z223 1 nfpa 54 in the united states and or section 7 of the can csa b149 1 natural gas and propane installation code in canada as well as applicable local building codes. Special stainless steel pipe. Gas tankless water heaters don t have to use indoor air for combustion.

Vent termination all tankless water heater vents must terminate at least 4 feet from a property line. Indoor tankless water heaters draw in outside air. Ok so san jose has the following requirements for where to install the tankless water heater. Facts about tankless water heater venting.

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. These vents must be made of suitable materials and be kept clear of combustible materials. It takes time for the tankless unit s heating element to first heat water before delivering it to the tap.

Tankless units withstand below freezing temperatures. 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. All emission of liquid or gas water heaters which are tankless needs vent pipes made of stainless steel and approved by ul.

No they don t need to be vented. Restrictions on gas fueled tankless water heaters no gas appliance may be located in a room used. Tankless water heater venting features. 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.

Direct vent and power vent.