06/02/2026
Many HVAC systems are still being sized using outdated assumptions.
As building envelopes improve, insulation improves, air leakage decreases, and windows perform better, the cooling load of the building often drops significantly. Yet many projects continue to install equipment larger than what is actually required.
Oversized equipment creates real problems:
• Short cycling
• Poor humidity control
• Reduced latent heat removal
• Wet coils and incomplete coil ring out
• Higher energy consumption
• Increased maintenance and equipment wear
• Inconsistent occupant comfort
When equipment is properly sized, systems run longer cycles, remove more moisture, maintain more stable temperatures, and provide better indoor environmental quality.
Commissioning is not just verifying that equipment turns on. It is verifying that systems are selected, controlled, and operated to deliver the intended performance.
At Prasino Engineering, we help owners verify that HVAC systems are performing as designed, providing the comfort, humidity control, and energy efficiency that modern high performance buildings require.
