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  2. Comfort Systems USA - Wikipedia

    en.wikipedia.org/wiki/Comfort_Systems_USA

    Comfort Systems USA provides heating, ventilation and air conditioning (HVAC) installation, maintenance, repair and replacement services within the mechanical services industry. The company has 38 operating units in 72 cities and 86 locations throughout the United States .

  3. Central heating - Wikipedia

    en.wikipedia.org/wiki/Central_heating

    A central heating system provides warmth to a number of spaces within a building from one main source of heat. It is a component of heating, ventilation, and air conditioning (short: HVAC) systems, which can both cool and warm interior spaces. A central heating system has a furnace that converts fuel or electricity to heat.

  4. Furnace (central heating) - Wikipedia

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

    These furnaces were still big and bulky compared to modern furnaces, and had heavy-steel exteriors with bolt-on removable panels. Energy efficiency would range anywhere from just over 50% to upward of 65% AFUE. This style furnace still used large, masonry or brick chimneys for flues and was eventually designed to accommodate air-conditioning ...

  5. It Happened in Crawford County: Ron Chatfield's career ... - AOL

    www.aol.com/happened-crawford-county-ron-chat...

    Ron crawled under the trailer, laying in cold mud to repair them. The home was heated by a small fuel oil furnace barely adequate to heat the space on cold days. They usually ran out of fuel oil ...

  6. Heating, ventilation, and air conditioning - Wikipedia

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

    Heating, ventilation, and air conditioning (HVAC) is the use of various technologies to control the temperature, humidity, and purity of the air in an enclosed space. Its goal is to provide thermal comfort and acceptable indoor air quality .

  7. Cleveland, Columbus and Cincinnati Railroad - Wikipedia

    en.wikipedia.org/wiki/Cleveland,_Columbus_and...

    The locomotive repair shops were located at the south end of Columbus Road on the Columbus Peninsula. [100] [101] The line traveled south through the flats, and ascended the heights by following the valley of Walworth Run. [77] On September 13, 1849, [102] the railroad leased from the city of Cleveland land on the shore of Lake Erie. [103]

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