Since 2003, AboveAir Technologies has manufactured specialized HVAC equipment for commercial and industrial applications, with a particular focus on precision cooling for mission-critical computer rooms. Based in Frederick, Maryland, the company operates a 150,000-square-foot manufacturing facility and has deployed thousands of tons of equipment across North America. Its equipment is Intertek (ETL) listed to the UL 1995 standard for use in the United States and Canada, and is sold through an exclusive network of independent HVAC manufacturer’s representatives.
Intertek ETL Listed
UL 1995 Test Standard Conformance
Compliance program
AHRI Member
ETL
Quality certification
Skil-aireFor 50 years, Skil-aire has manufactured precision cooling and environmental-control systems for facilities where temperature stability and uptime are critical, from datacenters and trading floors to medical and defense sites. A TitheCorp company based in Baltimore, it builds systems in-house and supports projects with a nationwide team of more than 400 engineers and technicians. Its Guardian systems can hold temperature within ±0.5°F for demanding 24/7 environments, including landmark installations such as San Francisco’s 181 Fremont.BALTIMORE, MD
Northern Air Systems LLCFor nearly three decades, Rochester-based Northern Air Systems has manufactured custom HVAC systems for mission-critical settings, from aviation ground support to mobile medical units and hazardous industrial environments. Its Tru-Temp™ systems are built for continuous operation in temperatures ranging from -40°F to 131°F, with thousands operating worldwide. Northern Air designs, builds, and tests its equipment in-house and holds ISO 9001:2015 certification.ROCHESTER, NY
Kelly HVAC, IncSince 1994, Kelly HVAC has been owned and led by Chris Kelly, whose more than 30 years of mechanical experience shape this Upper Marlboro contractor’s work for commercial and local government customers. The company is known for handling specialized HVAC applications such as clean rooms, computer-room systems and ice rinks across Maryland, Virginia and Washington, D.C.UPPER MARLBORO, MD
Fresh Air ConceptsFamily-owned and operated since 2003, Fresh Air Concepts provides residential and commercial HVAC, electrical, and mechanical services from its Linthicum, Maryland base across the Baltimore–Washington region. The company combines HVAC expertise with in-house automated sheet-metal fabrication and is a Mitsubishi Diamond Commercial Contractor, supporting customized systems from home installations to complex commercial facilities. Fresh Air Concepts is also a nine-time Carrier President’s Award winner.LINTHICUM HEIGHTS, MD