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2. 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.

3. 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.

4. Hot water storage tank - Wikipedia

   en.wikipedia.org/wiki/Hot_water_storage_tank

   A hot water storage tank (also called a hot water tank, thermal storage tank, hot water thermal storage unit, heat storage tank, hot water cylinder, and geyser) is a water tank used for storing hot water for space heating or domestic use. Water is a convenient heat storage medium because it has a high specific heat capacity. This means ...

5. Prehistoric mastodon jaw found in backyard by NY homeowner ...

   www.aol.com/news/prehistoric-mastodon-jaw-found...

   An intact prehistoric mastodon jaw was discovered in the backyard of a Hudson Valley house after the homeowner initially saw a pair of teeth poking up by a plant, according to state officials.

6. Compost heater - Wikipedia

   en.wikipedia.org/wiki/Compost_heater

   The pipe is wrapped around the methane generator with an inlet for cold water and an outlet for hot water. The heat from the decomposing mass produces 4 litres per minute (0.88 imp gal/min; 1.1 US gal/min) of hot water heated to 60 degrees Celsius (140 degrees Fahrenheit) — enough to meet central heating, bathroom and kitchen requirements.

7. What the only battleground Democrat to do better than Trump ...

   www.aol.com/only-battleground-democrat-better...

   Josh Stein’s victory in this year’s North Carolina governor’s race was huge. And his opponent was widely seen as the weakest Republican in a major race this cycle.