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2. Comfort Systems USA - Wikipedia

   en.wikipedia.org/wiki/Comfort_Systems_USA

   Comfort Systems USA provides heating, ventilation and air conditioning (HVAC) installation, maintenance, repair and replacement services within the mechanical services industry. The company has 38 operating units in 72 cities and 86 locations throughout the United States .

3. Testing, adjusting, balancing - Wikipedia

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

   In heating, ventilation, and air conditioning (HVAC), testing, adjusting and balancing (TAB) are the three major steps used to achieve proper operation of heating, ventilation, and air conditioning systems. TAB usually refers to commercial building construction and the specialized contractors who employ personnel that perform this service.

4. Goodman Global - Wikipedia

   en.wikipedia.org/wiki/Goodman_Global

   Goodman Manufacturing was founded by HVAC dealer, Harold V. Goodman, in 1975 as a manufacturer of flexible air ducts and plastic blade registers. However, he turned his sights to fulfill a dream of manufacturing affordable HVAC equipment for households across the United States of America and beyond. [citation needed]

5. AAON - Wikipedia

   en.wikipedia.org/wiki/AAON

   AAON was founded in 1988 when Norman H. Asbjornson set out to create a commercial HVAC company that designed and manufactured semi-custom equipment that would excel in performance relative to the market. [1] Asbjornson purchased the heating and air-conditioning division of John Zink and created a new company called AAON. The name ensured the ...

6. AOL Mail

   mail.aol.com

   What if I have questions or need help with AOL Mail? You can find instant answers on our AOL Mail help page . Should you need additional assistance we have experts available around the clock at 800-730-2563.

7. Fan coil unit - Wikipedia

   en.wikipedia.org/wiki/Fan_coil_unit

   These motors are sometimes called DC motors, sometimes EC motors and occasionally DC/EC motors. DC stands for direct current and EC stands for electronically commutated.. DC motors allow the speed of the fans within a fan coil unit to be controlled by means of a 0-10 Volt input control signal to the motor/s, the transformers and speed switches associated with AC fan coils are not required.