Can You Vent A Tankless Water Heater Into A Chimney

Water heater installed close to the roof framing would need at least 5 long vertical vent pipe single wall vent pipe requires minimum 6 of clearance to combustible materials general rule the chimney should not be outside a window or other house opening.

Can you vent a tankless water heater into a chimney.

The remaining heat creates a hot exhaust gas that requires metal venting typically stainless steel or thick aluminum. Special stainless steel pipe. Here s how to vent a water heater to a chimney. Yes venting tankless water heater with furnace is possible.

I would like to vent it into the brick chimney were the heating boiler and the old water heater was vented to. 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. Non condensing tankless water heaters typically transfer to the water only about 80 percent of the heat they generate.

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 it doesn t have to be an expensive hassle to vent. Chimney chimney flue must terminate min.

With a condensing tankless water heater you don t need metal venting. Vent to the outside. The tankless heater cannot share vent piping with any other appliance and it cannot use a masonry chimney flue for venting. It really is not a good idea.

The gases contain carbon monoxide. This is because most homes have water heaters and furnace sharing the same exhaust vent. Be sure to check your gas water heater annually for cracks or leaks in the flue. I would like to replace my tank type water heater with a tankless rheem rtg 74pv in the same location.

The reason is because like a standard water heater they create dangerous combustion gases when they fire. To avert this problem you can vent the water heater to the largest hole in the chimney and cap the remaining holes. The standard galvanized vent from your old storage tank heater would quickly rust away if your tankless heater vented. Technically you can vent your tankless heater through the chimney but only in certain circumstances.