Tankless Water Heater Vent Requirements

Facts about tankless water heater venting.

Tankless water heater vent requirements.

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. Tankless water heaters can be vented in two ways. Gas tankless water heaters don t have to use indoor air for combustion. American tankless water heaters venting.

These vents must be made of suitable materials and be kept clear of combustible materials. Outside tankless water heaters free up indoor space. 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 heater venting features.

Tankless water heaters are vented in two ways. You do have way more options with electric than with gas or propane but the issue generally is the gpm. The tankless heater cannot share vent piping with any other appliance and it cannot use a masonry chimney flue for venting. See the use and care manual for important information regarding the venting installation and materials for your tankless water heater.

Proper venting gas and propane heaters emit carbon monoxide which must be vented outside. No they don t need to be vented. These vents must be made of suitable materials and be kept clear of combustible materials. 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.

Indoor tankless water heaters draw in outside air. Vent termination all tankless water heater vents must terminate at least 4 feet from a property line. Vent adapter is needed to connect the water heater which is tankless to the exhaust hose. Direct vent and power vent.

Tankless water heaters don t always need two ventilation pipes even for direct vent units. Select either an adapter of three inch or an adapter of four inches depending on what water heater model you decide. All emission of liquid or gas water heaters which are tankless needs vent pipes made of stainless steel and approved by ul. Ok so san jose has the following requirements for where to install the tankless water heater.

The vent pipe must be made of stainless steel designed for venting corrosive gases. Special stainless steel pipe. 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. Tankless units withstand below freezing temperatures.

It takes time for the tankless unit s heating element to first heat water before delivering it to the tap.