A tankless water heater requires a 4-foot clearance from the side or below a door or window that opens, unless the unit is directly vented to the outside. If the water heater is installed above the door or window, it needs 12 inches of clearance.

What are the requirements for a tankless water heater?

Tankless water heaters provide hot water on-demand. Gas units require a gas line, adequate combustion air, a vent to remove combustion gas and an electrical outlet to power the unit. While they last longer than tank-style water heaters, they are more costly to install and often require upgrading your gas line.

How much space do you need for a tankless water heater?

10,000 cu. ft. As a general rule of thumb any gas tankless water heater that uses internal combustion air musts have at least 10,000 cu. ft. of space around the unit. Confined areas (such as a closet) may require air ducts or additional air inlets.

Where should a tankless water heater go?

The ideal location for your water heater is inside the home. Most installations are small and unobtrusive so they will easily fit in a pantry, under the stairs, or under your sink. If you must place the water heater outside, make sure its safe from direct sunlight, rain, and insects.

How far does a hot water system need to be from a window?

A Gas hot water service must be located at least 300mm away from windows.

Can you put a tankless water heater under the house?

Because its small — about the size of a carry-on suitcase — you can place a tankless water heater along any stretch of pipe: In the attic, basement, closet, or crawlspace. You can install two or three units to serve different parts of the house, or even dedicate a unit for a particular use — say, a washing machine.

How far should an exhaust vent be from a window?

three feet The exhaust vent terminal should be at least three feet above the forced air inlet. Any door, window, or gravity air inlet into a building must be at least 12-inches above the vent terminal.

Where should I put my hot water system?

Positioning the hot water system near the bathroom, laundry and kitchen reduces heat loss through pipes. There is little point in investing in a hot water system without giving due consideration to where it will be located. Ideally, the best place for a hot water system is as close to the hot taps as possible.

Can you oversize a tankless water heater?

As suggested when selecting a tank-type heater, you dont want to buy an oversized or undersized tankless water heater, as it will result in unnecessary issues such as the rising upfront price, operating costs and wasted water and energy - affecting your budget and time.

Is it OK to put a tankless water heater in the attic?

Simply put, as long as there is enough combustion air provided, tankless water heaters can be installed in any area of your home, from a utility room to a garage to, yes, even an old, dusty attic. in general, most plumbers recommend simply installing it where your old water heater was located.

How far should you be from the vent?

For a 1 ½-inc pipe the vent should be 42 inches away at the most while a 2-inch pipe must have a maximum distance of 5 feet. For pipes that have a diameter of 3 inches the distance is 6 feet and for a 4-inch pipe the most it should be away from the vent is 10 feet.

Do bathroom exhaust fans need to be vented outside?

Note that the bathroom vent fan must always exhaust to the outdoors; never allow the duct to simply blow into an attic, crawlspace or other enclosed area.

How do I know if my hot water system is off peak?

The off-peak heating system kicks in at around mid-night (off-peak hours). This is when your water heater will go through a reheating cycle. A tank can take between 2 to 4 hours to fully reheat.

Can hot water systems be installed inside?

Indoor tank systems Sometimes hot water systems need to be installed indoors or under cover. In smaller houses and apartments a storage tank system may not be a feasible option, and you may need to install a continuous flow system.

Why are water heaters kept in the basement instead of the attic?

Water heaters that are installed in attics or elsewhere upstairs increase the risk of leaks and water damage. Since most Texas homes lack a proper basement, it is standard practice to install water heaters in the attic – somewhere where its out of sight.