Approved by the Texas Workforce Commission
Classes Start January 14, 2020

Understanding the Differences Between Residential and Commercial HVAC

The basic idea behind all HVAC systems is the same.  Cooldown buildings, absorb moisture during the evaporation phase and lower humidity, providing a pleasant environment for those inside the space. However, this doesn’t mean that these 2 systems are the same.Residential and commercial HVAC have different requirements, from energy and space to repair. Click To Tweet

Residential vs. Commercial HVAC

While residential and commercial HVAC systems have similar technology, there are significant differences between the two. This includes the amount of power they require to operate, size, location, complexity, and drainage. These key differences also mean that technicians must receive different training for commercial and residential HVAC repair and maintenance.


  • Residential HVAC systems split, with the blower, evaporator, and condensation drainage unit inside the home and the compressor, condenser and condenser fan unit located just outside the home.
  • Commercial units are housed together (package units) on the facility’s rooftop or in a large cabinet. This allows technicians to work on them without disrupting those inside the building, and it keeps the system safe from vandalism or other damage.


  • Residential units generally only require one condensation pan that drains to the outside, with windows to alleviate exhaust.
  • Commercial HVAC systems are very complex. They heat and cool a much larger area, so require a more elaborate draining system.

The Same Goal

Residential and commercial HVAC systems are not the same, but both function to reach the same goal, which is to provide a comfortable space. Whether it’s for yourself, your family, customers or clients, it’s important to schedule HVAC service calls with a technician capable of fixing your unique system.

Contact Us to learn more about finding a qualified residential or commercial HVAC technician. Interested in becoming a certified HVAC technician? We offer flexible classes, financing options and hands-on experience that’s proven to get you hired after graduation.