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In business since 1992, Discca Environmental Services Inc. is a full-service mechanical, electrical, heating, ventilating and air conditioning (HVAC) contractor serving the commercial, institutional as well as industrial market. Based at Greensboro, N.C., the company's offerings include power distribution, lighting systems, pneumatic controls as well as facility management. Additionally, it provides emergency repairs, maintenance contracts, refrigeration and welding/piping. Discca Environmental Services Inc. also focuses on centrifugal/reciprocating/gas electric/heat pump/refrigeration as well as blood bank related systems.

Air Quality Heating & Cooling in Greensboro, NC is a leading provider of HVAC services, offering reliable and energy-efficient solutions for residential and commercial properties. With a focus on clean air and environmental sustainability, the company is dedicated to improving indoor comfort while reducing its impact on the planet. Generated from the website

Established in 1977, Systems Contractors Inc. is a provider of engineering, fabrication and installation services for industrial heating, ventilation and air conditioning (HVAC) equipment. Based in Greensboro, N.C., the company offers a complete range of engineering consultation and design services using computer aided design (CAD) along with fabrication services, including metal shearing, forming, rolling and plasma cutting using carbon, stainless steel or aluminum. Systems Contractors Inc. also provides after sales maintenance services post installation. It caters to clients across the United States.