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  2. Heating, ventilation, and air conditioning - Wikipedia

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

    Air handling unit, used for heating, cooling, and filtering the air. Air cleaning and filtration removes particles, contaminants, vapors and gases from the air. The filtered and cleaned air then is used in heating, ventilation, and air conditioning. Air cleaning and filtration should be taken in account when protecting our building environments ...

  3. Duct (flow) - Wikipedia

    en.wikipedia.org/wiki/Duct_(flow)

    Ducts for air pollution control in a 17000 standard cubic feet per minute regenerative thermal oxidizer (RTO). A round galvanized steel duct connecting to a typical diffuser Fire-resistance rated mechanical shaft with HVAC sheet metal ducting and copper piping, as well as "HOW" (Head-Of-Wall) joint between top of concrete block wall and underside of concrete slab, firestopped with ceramic ...

  4. Air conditioning - Wikipedia

    en.wikipedia.org/wiki/Air_conditioning

    The efficiency of air conditioners is often rated by the seasonal energy efficiency ratio (SEER), which is defined by the Air Conditioning, Heating and Refrigeration Institute in its 2008 standard AHRI 210/240, Performance Rating of Unitary Air-Conditioning and Air-Source Heat Pump Equipment. [61]

  5. List of cleaning companies - Wikipedia

    en.wikipedia.org/wiki/List_of_cleaning_companies

    Molly Maid – an internationally franchised domestic cleaning company. [6] [7] New Britain Dry Cleaning Corporation – a New Britain, Connecticut-based company founded in 1912. [8] ServiceMaster Clean – a franchisor selling commercial and residential cleaning franchisees in the United States, Canada, and 10 other countries.

  6. Home improvement - Wikipedia

    en.wikipedia.org/wiki/Home_improvement

    Home or residential renovation is an almost $300 billion industry in the United States, [5] and a $48 billion industry in Canada. [6] [full citation needed] The average cost per project is $3,000 in the United States and $11,000–15,000 in Canada. Professional home improvement is ancient and goes back to the beginning of recorded civilization.

  7. 20 Ways to Lower Your Electric Bill This Winter

    www.aol.com/finance/20-ways-lower-electric-bill...

    The upcoming winter season is expected to be “wet and cold for most locations,” according to the 2024 Farmer’s Almanac. That means now is a good time to figure out how to lower heating costs ...

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