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

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

   Bans on large gas-fired units and pool heaters will begin in 2027, and high-temperature units in 2029. Gas-fired water heaters will be banned from existing buildings once the appliances reach a ...

3. Pentair - Wikipedia

   en.wikipedia.org/wiki/Pentair

   Pentair plc (PNR) is an American water treatment company incorporated in Ireland with tax residency in UK, with its main U.S. office in Golden Valley, Minnesota. [6] Pentair was founded in the US, with 65% of company's revenue coming from the US and Canada as of 2017.

4. Water heating - Wikipedia

   en.wikipedia.org/wiki/Water_heating

   A 46 kW (157,000 BTU/h) heater, as might exist in a tankless heater, would take about 15 minutes to do this. At $1 per therm , the cost of the gas would be about 40 cents. In comparison, a typical 230 L (60 US gal) tank electric water heater has a 4.5 kW (15,000 BTU/h) heating element, which at 100% efficient results in a heating time of about ...

5. Solar water heating - Wikipedia

   en.wikipedia.org/wiki/Solar_water_heating

   Pool covering systems, whether solid sheets or floating disks, act as insulation and reduce heat loss. Much heat loss occurs through evaporation, and using a cover slows evaporation. STCs for nonpotable pool water use are often made of plastic. Pool water is mildly corrosive due to chlorine. Water is circulated through the panels using the ...

6. Swimming pool reactor - Wikipedia

   en.wikipedia.org/wiki/Swimming_pool_reactor

   A swimming pool reactor, [1] also called an open pool reactor, is a type of nuclear reactor that has a core (consisting of the fuel elements and the control rods) immersed in an open pool usually of water. [2] The water acts as neutron moderator, cooling agent and radiation shield. The layer of water directly above the reactor core shields the ...