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  2. Heating, ventilation, and air conditioning - Wikipedia

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

    The three major functions of heating, ventilation, and air conditioning are interrelated, especially with the need to provide thermal comfort and acceptable indoor air quality within reasonable installation, operation, and maintenance costs. HVAC systems can be used in both domestic and commercial environments.

  3. Furnace (central heating) - Wikipedia

    en.wikipedia.org/wiki/Furnace_(central_heating)

    The fourth category of furnace is the high-efficiency condensing gas furnace. High efficiency condensing gas furnaces typically achieve between 90% and 98% AFUE. [3] A condensing gas furnace includes a sealed combustion area, combustion draft inducer and a secondary heat exchanger. The primary gain in efficiency for a condensing gas furnace, as ...

  4. Reliance Home Comfort - Wikipedia

    en.wikipedia.org/wiki/Reliance_Home_Comfort

    Reliance Home Comfort is a residential and commercial services company headquartered in Canada primarily focused on rental, sales and maintenance of water heaters, water purification, smart home and heating, ventilation, and air conditioning systems.

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  7. Forced-air gas - Wikipedia

    en.wikipedia.org/wiki/Forced-air_gas

    Older furnaces sometimes relied on gravity instead of a blower to circulate air. [1]Gas-fired forced-air furnaces have a burner in the furnace fueled by natural gas.A blower forces cold air through a heat exchanger and then through duct-work that distributes the hot air through the building. [2]

  8. TransCanada pipeline - Wikipedia

    en.wikipedia.org/wiki/TransCanada_pipeline

    The TransCanada pipeline right-of-way through Panmure Alvar, west of Ottawa. The completion of this project was a spectacular technological achievement. In the first three years of construction (1956–1958), workers installed 3,500 kilometres of pipe, stretching from the Alberta–Saskatchewan border to Toronto and Montreal.

  9. Municipal Property Assessment Corporation - Wikipedia

    en.wikipedia.org/wiki/Municipal_Property...

    MPAC, formerly known as OPAC (Ontario Property Assessment Corporation), was created on December 31, 1997, as a method to create accurate and equitable assessments across Ontario. MPAC came into existence with the MPAC Act , and it administers the Assessment Act , both part of Ontario provincial legislation .

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