INSTALLATION AND MAINTENANCE
Proper installation and maintenance of your demand water heater can optimize its energy efficiency.
Proper installation depends on many factors. These factors include fuel type, climate, local building code requirements, and safety issues, especially concerning the combustion of gas-fired water heaters. Therefore, it's best to have a qualified plumbing and heating contractor install your demand water heater. Do the following when selecting a contractor:
If you're determined to install your water heater yourself, first consult the manufacturer. Manufacturers usually have the necessary installation and instruction manuals. Also, contact your city or town for information about obtaining a permit, if necessary, and about local water heater installation codes.
Periodic water heater maintenance can significantly extend your water heater's life and minimize loss of efficiency. Read your owner's manual for specific maintenance recommendations.
A tankless water heaters uses 30 to 50 percent less energy than units with tanks, saving a typical family about $100 or more per year, depending on water usage. Tankless units (also called “on demand” units or an instant hot water heater) heat water only when you turn on the faucet. They usually operate on natural gas or propane. The main advantage is that they eliminate the extra cost of keeping 40 to 50 gallons of water hot in a storage tank, so you waste less energy. They also offer a continuous supply of hot water, which is ideal for filling a big hot tub or a whirlpool. They’re more compact than a standard water heater and mount on a wall.
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