Alliance AC provides vertical SCAV, horizontal units, and Specialty A/C, packaged or split air conditioning, Air Handling Units (Chilled Water) and air and water source heat pumps.

B&B Air Conditioning provides facilities such as service, repair and install all of the best brands of heating, cooling, indoor air, and comfort systems in the market. They also provide HVAC services such as AC services, heating services, indoor air purification, comfort systems, water heaters, thermostats, commercial HVAC and much more.

Baltimore Aircoil Company (BAC) creates cutting-edge cooling equipment for the HVAC, Industrial, and Refrigeration marketplaces. It leverages the power of evaporative cooling by optimizing the balance of water and energy. BAC's product offerings include cooling towers, closed-circuit cooling towers, hybrid products, evaporative condensers, and ice thermal storage systems.

Skil – aire, division of Tithe Corp is a wholly-owned subsidiary of Baltimore, Maryland based Tithe Corporation, an environmental control and air conditioning products and services company that delivers integrated product technologies for cooling and enthalpy control solutions.

Stulz-ATS is a globally renowned manufacturer of environmental control equipment including a full line of energy-efficient precision air conditioners, ultrasonic humidifiers, and desiccant dehumidifiers. They also provide cooling solutions and services for mission critical applications through the design and manufacture of highly energy efficient temperature and humidity control equipment for commercial and industrial applications.