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2. 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]

3. Yelp - Wikipedia

   en.wikipedia.org/wiki/Yelp

   It has since become one of the leading sources of user-generated reviews and ratings for businesses. Yelp grew in usage and raised several rounds of funding in the following years. By 2010, it had $30 million in revenue, and the website had published about 4.5 million crowd-sourced reviews. From 2009 to 2012, Yelp expanded throughout Europe and ...

4. Testing, adjusting, balancing - Wikipedia

   en.wikipedia.org/wiki/Testing,_adjusting,_balancing

   Adjusting is the final setting of balancing devices such as dampers and valves, adjusting fan speeds and pump impeller sizes, in addition to automatic control devices such as thermostats and pressure controllers to achieve maximum specified system performance and efficiency during normal operation.

5. Bitter cold in forecast: December set for 'coldest start' in ...

   www.aol.com/bitter-cold-forecast-december-set...

   Through Dec. 9, the western half of the U.S. is forecast to have above normal or near normal temperatures, the agency says. The extended U.S. temperature forecast for Dec. 5-9.

6. Process duct work - Wikipedia

   en.wikipedia.org/wiki/Process_Duct_Work

   Process duct work conveys large volumes of hot, dusty air from processing equipment to mills, baghouses to other process equipment. Process duct work may be round or rectangular. Although round duct work costs more to fabricate than rectangular duct work, it requires fewer stiffeners and is favored in many applications over rectangular ductwork.

7. Serial killer’s daughter exposes chilling secret, turns him ...

   www.aol.com/serial-killer-daughter-exposes...

   One night in 1980, April Balascio’s father, Edward Wayne Edwards, woke up the household and told everyone to start packing. They were leaving their home in Watertown, Wisconsin, after living ...