Law360 Canada ( July 8, 2026, 9:46 AM EDT) -- Appeal by appellant from summary judgment dismissing its coverage claim under a standard form greenhouse insurance policy (Policy). The appellant’s greenhouse tomato crop was destroyed after a boiler malfunction emitted excessive carbon monoxide that was not detected by a malfunctioning monitor. The appellant claimed indemnity under the Policy for the loss of its tomato plants. The respondent denied coverage, relying on the machinery breakdown exception in the initial grant of coverage and the exclusions for exhaust gas, machinery breakdown, pollution, and lack of maintenance. The motion judge dismissed the appellant’s claim and granted boomerang summary judgment to the respondent. He concluded that the direct cause of the loss was excessive carbon monoxide, that carbon monoxide was exhaust gas within the meaning of the Policy, and that the exhaust gas exclusion barred coverage. In the alternative, he held that the boiler and monitor malfunctions were machinery breakdowns, which placed the loss outside the initial grant of coverage. The appellant argued that the motion judge failed to apply the proper causation analysis for a loss arising from a series of events and failed to interpret the standard form policy correctly, including the machinery breakdown exception and the exclusions....