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2. Central vacuum cleaner - Wikipedia

   en.wikipedia.org/wiki/Central_vacuum_cleaner

   In the United States, the average central vacuum system has an installed cost of around $1,000. [ 12 ] [ 10 ] This initial expense must be weighed against the long-term benefits of a central vacuum, including the typical longer service life of the equipment, and negligible consumables cost if a filterless system is chosen.

3. Vacuum sewer - Wikipedia

   en.wikipedia.org/wiki/Vacuum_sewer

   The system has only one central vacuum station serving 40 km of sewer line. The vacuum station is considered to be the biggest vacuum station in the world. [1] [non-primary source needed] The eco-city of Masdar, U.A.E., uses a vacuum sewer system as well to separate grey from black water.

4. Heating, ventilation, and air conditioning - Wikipedia

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

   Central, "all-air" air-conditioning systems (or package systems) with a combined outdoor condenser/evaporator unit are often installed in North American residences, offices, and public buildings, but are difficult to retrofit (install in a building that was not designed to receive it) because of the bulky air ducts required. [32] (Minisplit ...

5. Is Central Air Worth the Cost? Plus, What You Can Do Instead

   www.aol.com/finance/central-air-worth-cost-plus...

   Health. Home & Garden

6. List of vacuum cleaners - Wikipedia

   en.wikipedia.org/wiki/List_of_vacuum_cleaners

   An early electric vacuum cleaner by the Electric Suction Sweeper Company, circa 1908, predecessor of the Hoover vacuum cleaner (1922).. This is a list of vacuum cleaners and robot vacuum cleaner manufacturers.

7. AOL Mail

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   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!