TSSA boiler compliance in Ontario: which boilers are regulated, how inspection certificates work, who may service gas equipment, and where liability sits.

Late autumn at Front and Church. By the time the streets look like this, the heating season is already underway — and the service calendar is full. Every year it plays out the same way. The weather holds through most of September, nobody thinks about heat, and then the first real cold snap arrives in mid-October. Within 48 hours, every commercial HVAC contractor in the GTA is booked solid with no-heat calls — and the building that skipped its commercial HVAC fall maintenance

Toronto's tall buildings are also tall chimneys. The colder it gets, the harder stack effect pulls air in at street level — which is why negative pressure complaints start in October, not July. Every fall we get the same call. A tenant can't pull the front door open. Papers blow off a reception desk every time someone walks in. A restaurant's pilot light keeps going out. A property manager assumes the door closer needs adjusting, or that the gas appliance is faulty. Nine time