Combustion Air For Hot Water Heater

Facts about tankless water heater venting.

Combustion air for hot water heater.

A direct vent water heater draws air for combustion from outside your home rather than inside. Its unique two hose design provides combustion air for the gas furnace and hot water tank and make up air for leaks the dryer the fireplace and bathroom fans. A number of water heaters which have a tendency to perform in a variety of atmosphere where they are not supposed to attract fresh air outside the exterior area of where they are installed. These appliances were called atmospherically vented appliances the industry is now making the transition to sealed combustion appliances which take their combustion air from an outdoor air.

The exhaust gases and excess heat produced by your water heater are then vented back outdoors. Equaliz air was invented in 1978 when the first energy crunch was on. Sealed combustion designs are available in most current 90 afue efficient or higher forced air furnaces as well as a variety of central hot water heat boilers wall mounted gas heaters specialty tank type water heaters and also a variety of tankless water heaters. This is the combustion air duct i showed at the beginning of this post.

Around the water heater. The louvered door is the only source of incoming air for the room. Gas tankless water heaters don t have to use indoor air for combustion. In this post we ll discuss combustion air including what happens if we don t have enough and what the requirements are for enough there are two basic ways for your furnace to get its combustion air.

I am replacing a louvered door with a standard 6 panel door for a closet that contains a natural gas hot water heater. Power vent units use indoor air for combustion and simply vent the exhaust to the outside. In decades past all combustion appliances for example gas fired water heaters furnaces and boilers took their combustion air from inside the house. A direct vent water heater uses special coaxial venting that has separate chambers for intake air and exhaust in a single assembled vent piece.

I am planning to install a vent in the wall to allow air to enter the closet which is roughly 4 x 10 but not sure how large of a vent i will need to ensure that proper air flow is maintained. As a general rule any gas heater which is tankless uses combustion air must have a minimum area of 10 000 cu. Equaliz air is the only patented make up and combustion air device available today. To help reduce the effects of uncontrolled air leakage houses get sealed up as tight as possible and a single hole is created to bring outdoor air in to the basement usually right next to the furnace.

The air that your gas furnace and water heater and boiler needs in order to burn safely is called combustion air.