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2. 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.

3. Water heating - Wikipedia

   en.wikipedia.org/wiki/Water_heating

   Gas-fired heaters have maximum recovery efficiencies of only about 82–94% (the remaining heat is lost with the flue gasses). Overall energy factors can be as low as 80% for electric and 50% for gas systems. Natural gas and propane tank water heaters with energy factors of 62% or greater, as well as electric tank water heaters with energy ...

4. 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.

5. Energy Prices Are High—And These Tankless Water ... - AOL

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

   With energy prices higher than this time last year, a tankless water heater may be your best bet to save on bills. Here are the best options to consider. Energy Prices Are High—And These ...

6. A. O. Smith - Wikipedia

   en.wikipedia.org/wiki/A._O._Smith

   A. O. Smith Corporation manufactures the following types of water heaters for residential uses: gas and propane, hybrid, electric, tankless, and solar. The company manufactures the following types of water heaters for commercial uses: oil-fired, gas and electric, as well as boilers, storage tanks, and skid systems. It also provide the following ...

7. Electric vs. Gas Cars: Which Is More Cost Effective in the ...

   www.aol.com/electric-vs-gas-cars-more-130508992.html

   Gas Costs More “Going electric means you get to skip pricey trips to the pump, which is one of the biggest draws for making the switch,” said Courtney Lindwall with the National Resources ...