F280 Heat Load Calculations

F280-12 is the CSA standard on how to properly size HVAC equipment. Best practices in HVAC design start with code-compliant F280-12 load calculations as the foundation on which all other HVAC decisions are dependent. It takes into account various factors such as climate, building envelope, occupancy, ventilation, and internal loads to determine the heating and cooling requirements of each space.

Oversized HVAC equipment is emerging as one of the more serious issues in residential construction. By using F280, you can avoid oversizing or undersizing your mechanical systems — which can cost more to install, lead to higher energy bills, poor indoor air quality, and discomfort for the occupants.

At Egnite, we use F280 compliance software called Wrightsoft. This software allows us to input the design parameters of the house to calculate the heat loss and heat gain for each room. Wrightsoft also helps us select the appropriate equipment size and type, as well as design the duct layout and airflow distribution — a reliable and accurate tool that complies with the CSA F280 standard and ensures optimal comfort and efficiency for our customers.

Who Is This For?

Why It Matters

• Prevents costly oversizing or undersizing of mechanical systems
• Improves indoor air quality and occupant comfort
• Reduces long-term energy bills
• Supports BC Energy Step Code compliance
• Provides a defensible, code-compliant foundation for all HVAC decisions