Professional HVAC Design & CSA F280-12 Compliance Software

Blenheim Heating & Cooling provides the most trusted HVAC Compliance Software in Canada, allowing HVAC contactors and designers to avoid the massive headache caused by the CSA F280-12. This software enables you to optimize your workflow with Canada's leading automated platform for residential HVAC load calculations and mechanical design. 

Automated CSA F280-12 Load Calculations

Eliminate the complexity of manual heat loss and heat gain assessments. Our software provides instant CSA F280-12 compliant calculations based on the National Building Code of Canada. Simply input your building envelope data—R-values, window U-factors, and air leakage—and let our engine handle the thermal analysis.

Permit-Ready Municipal Reports

Get your building permits approved faster. Blenheim generates standardized HVAC compliance reports accepted by municipalities across Ontario and Canada. Stop the back-and-forth with building officials; provide them with professional, data-backed documentation the first time.

Precision Duct Sizing & Room-by-Room Airflow

Ensure homeowner comfort with accurate mechanical room-by-room design. Our tool calculates specific CFM requirements for every space, providing instant duct sizing recommendations (4" to 10" round) to prevent airflow imbalances and noisy systems.

Sensible & Latent Cooling Load Analysis

Design high-performance cooling systems with detailed sensible and latent heat gain breakdowns. By separating moisture removal from temperature reduction, our software helps you select the perfect A/C or Heat Pump capacity for the humid Canadian summer.

Secure Cloud Project Management

Access your HVAC design projects anywhere, from the job site to the office. Our cloud-based storage allows you to save project data, upload existing files, and manage multiple residential properties from any device with no software installation required.