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.

This is because most homes have water heaters and furnace sharing the same exhaust vent. Non condensing tankless water heaters typically transfer to the water only about 80 percent of the heat they generate. The vent pipe must be made of stainless steel designed for venting corrosive gases. However the key here is to install the vent pipe in the size required by the water heater.

The tankless heater cannot share vent piping with any other appliance and it cannot use a masonry chimney flue for venting. The reason is because like a standard water heater they create dangerous combustion gases when they fire. I would like to replace my tank type water heater with a tankless rheem rtg 74pv in the same location. Be sure to check your gas water heater annually for cracks or leaks in the flue.

It really is not a good idea. Here are a few things your installer should consider for effective tankless water heater venting. I would like to vent it into the brick chimney were the heating boiler and the old water heater was vented to. Technically you can vent your tankless heater through the chimney but only in certain circumstances.

Here s how to vent a water heater to a chimney. The biggest issue is that the condensate is very acidic and will corrode the masonry of a chimney. To avert this problem you can vent the water heater to the largest hole in the chimney and cap the remaining holes. Special stainless steel pipe.

The remaining heat creates a hot exhaust gas that requires metal venting typically stainless steel or thick aluminum. Most building codes require 4 inch flue pipes on water heaters. Electric tankless water heaters do not need to be vented but gas tankless heaters do. With a condensing tankless water heater you don t need metal venting.

Yes venting tankless water heater with furnace is possible. However it doesn t have to be an expensive hassle to vent. Chimney chimney flue must terminate min. Vent to the outside.