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2. Water heating - Wikipedia

   en.wikipedia.org/wiki/Water_heating

   In the United States, typical natural gas water heaters for households without unusual needs are 150–190 L (40–50 US gal) with a burner rated at 10.0–11.7 kilowatts (34,000–40,000 BTU/h). This is a popular arrangement where higher flow rates are required for limited periods.

3. 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.

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. Smell that? A strange odor has made its way across ... - AOL

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   800-290-4726 more ways to reach us. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach ... similar to natural gas, propane, burning garbage, burning rubber ...

6. Natural gas - Wikipedia

   en.wikipedia.org/wiki/Natural_gas

   Natural gas (also called fossil gas, methane gas or simply gas) is a naturally occurring mixture of gaseous hydrocarbons consisting primarily of methane (95%) [ 1 ] in addition to various smaller amounts of other higher alkanes. Traces of carbon dioxide, nitrogen, hydrogen sulfide, and helium are also usually present. [ 2 ]

7. 10 of the very best sales this weekend: Fall decor, bathroom ...

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   Aquasonic Electric Toothbrush with 8 Brush Heads & Travel Case. $40 $60 Save $20. This super scrubber hunts down and eliminates plaque with its 40,000-vibrations-per-minute motor and removes up to ...