By Dennis G. Crawford ( October 28, 2021, 12:52 PM EDT) -- Awareness is growing about a predatory business model which I call “The great Canadian HVAC scam.” This questionable business model targets vulnerable homeowners, such as the elderly or newcomers to Canada, with deceptive and high-pressure sales tactics. It has grown into an industry of significant size and appears to be largely immune to half-hearted attempts to regulate it....