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  2. North American Board of Certified Energy Practitioners

    en.wikipedia.org/wiki/North_American_Board_of...

    The North American Board of Certified Energy Practitioners (NABCEP) is a nonprofit professional certification and accreditation organization that offers both individual and company accreditation programs for photovoltaic system installers, solar heat installers, technical sales, and other renewable energy professionals throughout North America. [1]

  3. Heating, ventilation, and air conditioning - Wikipedia

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

    For example, a conventional heat pump system used to heat a building in Montana's −57 °C (−70 °F) low temperature or cool a building in the highest temperature ever recorded in the US—57 °C (134 °F) in Death Valley, California, in 1913 would require a large amount of energy due to the extreme difference between inside and outside air ...

  4. Air source heat pump - Wikipedia

    en.wikipedia.org/wiki/Air_source_heat_pump

    An air source heat pump (ASHP) is a heat pump that can absorb heat from air outside a building and release it inside; it uses the same vapor-compression refrigeration process and much the same equipment as an air conditioner, but in the opposite direction. ASHPs are the most common type of heat pump and, usually being smaller, tend to be used ...

  5. Testing, adjusting, balancing - Wikipedia

    en.wikipedia.org/wiki/Testing,_adjusting,_balancing

    Adjusting is the final setting of balancing devices such as dampers and valves, adjusting fan speeds and pump impeller sizes, in addition to automatic control devices such as thermostats and pressure controllers to achieve maximum specified system performance and efficiency during normal operation.

  6. Central heating - Wikipedia

    en.wikipedia.org/wiki/Central_heating

    An air source heat pump can be used to air condition the building during hot weather, and to warm the building using heat extracted from outdoor air in cold weather. Air-source heat pumps are generally uneconomic for outdoor temperatures much below freezing. In colder climates, geothermal heat pumps can be used to extract heat from the ground ...

  7. List of construction trades - Wikipedia

    en.wikipedia.org/wiki/List_of_construction_trades

    They also install gas lines and gas piping to a variety of appliances in homes and different types of businesses. Sign display worker. Steel fixer ("ironworker" USA, also "rodbuster" USA/Australia), a tradesperson who positions and secures reinforcing bars and mesh used to reinforce concrete on construction projects.

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