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2. Rheem Manufacturing Company - Wikipedia

   en.wikipedia.org/wiki/Rheem_Manufacturing_Company

   In 2009, Rheem and Ruud were the first to sell a Hybrid Heat Pump Water Heater, which was more than twice as efficient as similar electric water heaters. [20] Also in the same year, Rheem and Ruud central air conditioners were reported to have the fewest percentage of units requiring repair among all major HVAC brands according to Consumer Reports.

3. Heating, ventilation, and air conditioning - Wikipedia

   en.wikipedia.org/wiki/Heating,_ventilation,_and...

   Electrical heaters are often used as backup or supplemental heat for heat pump systems. The heat pump gained popularity in the 1950s in Japan and the United States. [14] Heat pumps can extract heat from various sources, such as environmental air, exhaust air from a building, or from the ground. Heat pumps transfer heat from outside the ...

4. Heat pump - Wikipedia

   en.wikipedia.org/wiki/Heat_pump

   A heat pump is a device that consumes energy (usually electricity) to transfer heat from a cold heat sink to a hot heat sink. Specifically, the heat pump transfers thermal energy using a refrigeration cycle , cooling the cool space and warming the warm space. [ 1 ]

5. Call for rules to accredit all heat pump installers to boost ...

   www.aol.com/call-rules-accredit-heat-pump...

   Heat pump installers should have to gain mandatory accreditation to ensure quality and boost consumer confidence in the new tech, industry experts have urged. ...

6. Wikipedia : Peer review/Air source heat pump/archive1

   en.wikipedia.org/.../Air_source_heat_pump/archive1

   This peer review discussion is closed. I've listed this article for peer review because I am thinking of nominating it for good article. People thinking of buying one may like to read an unbiased introduction and background info before talking to salespeople.

7. Husband Who 'Leapt' onto Polar Bear to Protect Wife from ...

   www.aol.com/husband-leapt-onto-polar-bear...

   A man has been seriously injured after trying to prevent a polar bear from attacking his wife in northern Ontario, Canada. On Tuesday, Dec. 3, before 5 a.m. local time, an adult male and an adult ...