What are the energy efficiency benefits of walk-in bathtubs for home use?

Walk-in tub energy use depends on the amount of hot water, bathing frequency and powered features such as pumps, heaters and heated backrests. A deep tub does not automatically use less water or energy than a conventional bath. Ask for the model's fill volume and electrical requirements, and check the household water heater's suitability. Compare running costs with the installed price; there is no universal walk-in tub energy-saving percentage or automatic tax credit.