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  2. Own a pool in Southern California? New air-quality rule ...

    www.aol.com/news/own-pool-southern-california...

    The rule will lead to the replacement over three decades of more than 1 million gas-burning appliances — including an estimated 700,000 pool heaters and 300,000 tankless water heaters — with ...

  3. Energy Prices Are High—And These Tankless Water Heaters Can ...

    www.aol.com/energy-prices-high-tankless-water...

    The Rheem RTEX-18 is one of the best value electric tankless water heaters out there, priced at just over $420 at the time of writing. Packing 240 volts, this electric water heater can put out as ...

  4. Water heating - Wikipedia

    en.wikipedia.org/wiki/Water_heating

    All new gas storage tank water heaters with capacities smaller than 55 US gal (210 L; 46 imp gal) sold in the United States in 2015 or later shall have an energy factor of at least 60% (for 50-US-gallon units, higher for smaller units), increased from the pre-2015 minimum standard of 58% energy factor for 50-US-gallon gas units.

  5. Tankless water heating - Wikipedia

    en.wikipedia.org/wiki/Tankless_water_heating

    Gas water heaters have an exhaust vent or one to two exhaust pipes on the top, and still require electric power for electronics, sensing and ignition. A three-phase, 21 kW, 400-volt tankless water heater in Europe, with new European color coding for three-phase power. There are also heaters that use several single-phase circuits instead.

  6. Storage water heater - Wikipedia

    en.wikipedia.org/wiki/Storage_water_heater

    A storage water heater, or a hot water system (HWS), is a domestic water heating appliance that uses a hot water storage tank to maximize water heating capacity and provide instantaneous delivery of hot water. [1] Conventional storage water heaters use a variety of fuels, including natural gas, propane, fuel oil, and electricity.

  7. Water in California - Wikipedia

    en.wikipedia.org/wiki/Water_in_California

    The study found that about 53% of total average household water use, or more than 192 US gallons (0.73 m 3) per household per day, was used for landscaping and other outdoor uses. Meanwhile, indoor use accounted for more than 170 US gallons (0.64 m 3) per household per day. The most in-home water consumption is toilet flushes, using 20% of the ...

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