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2. How Much Does It Cost to Replace a Water Heater? - AOL

   www.aol.com/lifestyle/much-does-cost-replace...

   Gas vs. Electric Water Heaters. Water heaters are either powered by gas or electric power. And while you can switch, this is largely determined by what kind of power your old system ran on ...

3. Water heating - Wikipedia

   en.wikipedia.org/wiki/Water_heating

   Direct electric resistance tank water heaters are not included in the Energy Star program; however, the Energy Star program does include electric heat pump units with energy factors of 200% or higher. Tankless gas water heaters (as of 2015) must have an energy factor of 90% or higher for Energy Star qualification.

4. Tankless water heating - Wikipedia

   en.wikipedia.org/wiki/Tankless_water_heating

   Tankless gas electronic ignition water heaters. 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.

5. We compared gas vs. electric stoves in our L.A. test kitchen ...

   www.aol.com/news/gas-stoves-phase-tested-flame...

   Los Angeles is on a course to phase out gas-powered living. The L.A. City Council voted in May to ban gas stoves in all new buildings constructed in city limits, joining more than 50 cities in ...

6. Storage water heater - Wikipedia

   en.wikipedia.org/wiki/Storage_water_heater

   Solar heat is clean and renewable. This is the most modern system. Increasingly, solar powered water heaters are being used. Their solar thermal collectors are installed outside dwellings, typically on the roof or walls or nearby, and the potable hot water storage tank is typically a pre-existing or new conventional water heater, or a water heater specifically designed for solar thermal.

7. 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 ...