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  2. Air handler - Wikipedia

    en.wikipedia.org/wiki/Air_handler

    6 – Mixed (recirculated + outside) air duct A rooftop packaged unit or RTU. An air handler, or air handling unit (often abbreviated to AHU), is a device used to regulate and circulate air as part of a heating, ventilating, and air-conditioning system. [1]

  3. List of defunct department stores of the United States

    en.wikipedia.org/wiki/List_of_defunct_department...

    Timeline of former nameplates merging into Macy's. Many United States department store chains and local department stores, some with long and proud histories, went out of business or lost their identities between 1986 and 2006 as the result of a complex series of corporate mergers and acquisitions that involved Federated Department Stores and The May Department Stores Company with many stores ...

  4. Glossary of HVAC terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_HVAC_terms

    HVAC (heating, ventilation, and air conditioning) is a major sub discipline of mechanical engineering. The goal of HVAC design is to balance indoor environmental comfort with other factors such as installation cost, ease of maintenance, and energy efficiency. The discipline of HVAC includes a large number of specialized terms and acronyms, many ...

  5. List of defunct retailers of the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_defunct_retailers...

    Al's Auto Supply – Chain that operated in Washington, California, Idaho, Oregon, Nevada and Alaska; purchased by CSK Auto.Founded by Abe "Al" Wexler in Everett, Washington in the late 1950s; [1] [2] sold 15 store chain to Paccar in 1987; [3] Paccar sold chain (along with Grand Auto) in 1999 to CSK Auto which eventually rebranded stores as Schucks.

  6. Watsco - Wikipedia

    en.wikipedia.org/wiki/Watsco

    Watsco, Inc. is a distributor of air conditioning, heating and refrigeration equipment, and related parts and supplies (HVAC/R) in the United States. [2] Watsco was founded more than 60 years ago as a manufacturer of parts, components, and tools used in the HVAC/R industry.

  7. Heating, ventilation, and air conditioning - Wikipedia

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

    Warm air systems distribute the heated air through ductwork systems of supply and return air through metal or fiberglass ducts. Many systems use the same ducts to distribute air cooled by an evaporator coil for air conditioning. The air supply is normally filtered through air filters [dubious – discuss] to remove dust and pollen particles. [15]

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