Spring in the GTA is short. One week you're managing heating complaints, the next you're fielding calls about a rooftop unit that won't cool. For commercial property managers, the April–May window is the most critical time of year to ensure your HVAC systems are ready — and this year, there's an added layer of urgency. With R-410A refrigerant now officially in its phase-down under Canada's amended regulations, the 2026 cooling season is the first where property managers may e

The refrigerant in your commercial rooftop units and split systems has changed three times in 30 years — and the third transition is happening right now.

As of January 1, 2026, Canada banned new equipment using R-410A refrigerant. If your building's rooftop units or split systems still run on it, your repair bills are about to climb — and fast. Here's exactly what that means for your portfolio. Bottom line up front: Your existing R-410A systems are not illegal and don't need to be replaced immediately. But refrigerant to service them is becoming scarcer and more expensive every month. If your units are 10+ years old, waiting