November 2, 2016


There are various types of HVAC systems and they are classified as commercial and residential.

Commercial HVAC systems are used in retail stores, hotels, office buildings, and other large buildings. Residential HVAC systems are used in homes and small businesses. Both types of systems perform the same function but there are some key differences between them.


Commercial HVAC systems are much larger than their residential counterparts due to the fact that they serve larger areas. They are also more complex in terms of thermostats and dampers. For these reasons, commercial systems require much more power to function.


Commercial HVAC systems are more complex as they have to take into account the types of rooms and to be adaptable accordingly. The temperature may vary depending on the number of rooms, the number of people occupying the building, and what it is used for. It is possible that some rooms such as server rooms may have to be maintained at specific temperatures.


Commercial HVAC systems are normally placed on the roof of a building, while residential systems are typically placed inside the home. The roof is considered the ideal location for commercial HVAC systems because a large system produces noise that causes disruption. The internal space of a building can be put to better use by placing the HVAC system on the roof. This also allows for easy maintenance and prevents damage to the system.


The drainage system of an HVAC system is also larger. Residential HVAC systems are small and serve smaller spaces, so the system drains into a pan outside the home. Multiple pipes and pans are required for a commercial system.


Commercial HVAC systems are typically manufactured as a modular and packaged system. All system components are housed together and can be modified and moved as required. A modular system allows for easy expansion and transportation. Generally, the condenser, condenser fan, blower, drainage system are housed together.

On the other hand, a residential HVAC system is manufactured as a split and standalone system, with components placed inside and outside the home. A residential HVAC system cannot be reduced or expanded.

St. Louis HVAC Company

Are you looking to invest in a new HVAC system? Is your HVAC system working below its top capacity? Talk to our St. Louis HVAC technician. Call Scott-Lee Heating Company at (314) 200-0788.