Can You Vent A Tankless Water Heater Into A Chimney

The reason is because like a standard water heater they create dangerous combustion gases when they fire.

Can you vent a tankless water heater into a chimney.

Be sure to check your gas water heater annually for cracks or leaks in the flue. The tankless heater cannot share vent piping with any other appliance and it cannot use a masonry chimney flue for venting. This is because most homes have water heaters and furnace sharing the same exhaust vent. Here are a few things your installer should consider for effective tankless water heater venting.

Electric tankless water heaters do not need to be vented but gas tankless heaters do. However the key here is to install the vent pipe in the size required by the water heater. With a condensing tankless water heater you don t need metal venting. I would like to replace my tank type water heater with a tankless rheem rtg 74pv in the same location.

The standard galvanized vent from your old storage tank heater would quickly rust away if your tankless heater vented. To avert this problem you can vent the water heater to the largest hole in the chimney and cap the remaining holes. 5 above the flue collar e g. Chimney chimney flue must terminate min.

The remaining heat creates a hot exhaust gas that requires metal venting typically stainless steel or thick aluminum. I would like to vent it into the brick chimney were the heating boiler and the old water heater was vented to. The biggest issue is that the condensate is very acidic and will corrode the masonry of a chimney. Most building codes require 4 inch flue pipes on water heaters.

The vent pipe must be made of stainless steel designed for venting corrosive gases. Here s how to vent a water heater to a chimney. Non condensing tankless water heaters typically transfer to the water only about 80 percent of the heat they generate. The gases contain carbon monoxide.

However it doesn t have to be an expensive hassle to vent. Yes venting tankless water heater with furnace is possible. It really is not a good idea. Special stainless steel pipe.