His study focused on the cost-effectiveness and productivity of "comfort control" systems regulating heating, ventilation and air conditioning.

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The ship generates and distributes its own power, provides and maintains sanitation, heating, ventilation and air conditioning systems, and makes several hundred thousand gallons of water every day from sea water.

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Rupert said the same chlorine dioxide treatment will be used on the building's heating, ventilation and air conditioning system (HVAC), where spores had been found after the letter was opened in Daschle's office.

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Comfort Systems offers installation, maintenance, repair and replacement services for heating, ventilation, and air conditioning (HVAC) systems in the mechanical services industry.

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Additionally, the growing construction industry in Asia-Pacific, particularly China, has driven growth in heating, ventilation and air-conditioning, and real estate service businesses of Johnson Controls.

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However, the most important aspect of this expansion is that it will allow Johnson Controls to address the growing demand for energy-efficient HVAC (heating, ventilation, and air conditioning) products from the building market in China.

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In his brilliant 1991 design for Frankfurt's Commerzbank, the tallest office building in Europe, he brought off the seemingly impossible feat of building a supertower that could use natural ventilation (as against fuel-gobbling air conditioning) during 60% of the year.

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