Commercial HVAC (Heating, Ventilation, and Air Conditioning) refers to the systems and services designed to provide heating, cooling, and ventilation solutions for commercial or non-residential buildings such as offices, retail stores, hospitals, hotels, and industrial facilities. Commercial HVAC systems are typically larger and more complex than residential systems due to the larger spaces they need to condition and the higher occupancy rates.

Residential HVAC (Heating, Ventilation, and Air Conditioning) refers to the systems and services designed to provide heating, cooling, and ventilation solutions for homes and residential buildings. Residential HVAC systems are typically smaller and less complex compared to commercial systems, as they are designed to cater to the needs of individual households.