About

About Blenheim Heating & Cooling Software

Engineered for the Canadian Climate

Founded and headquartered in Thunder Bay, Ontario, Blenheim was born out of the necessity for precision in one of North America’s most demanding climates. We aren't just software developers; we are advocates for the Canadian HVAC industry. We understand that a "standard" calculation that works in California won't keep a home comfortable when it’s -30°C on the shores of Lake Superior.

Our Mission: Precision Without Complexity

For too long, HVAC contractors have been forced to choose between overpriced, overly-complicated engineering software or inaccurate "rules of thumb." Blenheim was built to bridge that gap. We provide automated compliance tools that are fast enough for a sales call but precise enough for a building permit.

Why Thunder Bay?

Our location defines our standards. Operating out of Northern Ontario, we have a front-row seat to the challenges of extreme temperature swings and high-performance building envelopes. Our software is stress-tested against the realities of the National Building Code of Canada and the specific requirements of municipalities from coast to coast.

The Blenheim Standard

• Compliance First: Every algorithm is tuned to CSA F280-12 guidelines.

• Contractor Focused: We build tools that fit into a technician's workflow, not an academic's spreadsheet.

• Innovation Driven: From cloud-based project management to real-time sensible and latent load analysis, we are constantly evolving to meet the needs of the modern mechanical designer.