Frequently Asked Questions HVAC Contractors Are Asking Us About A2L and SEER
When will A2L refrigerants become mandatory in Canada?
A2L refrigerants are not yet mandatory in Canada, but changes are on the horizon. Manufacturers are already introducing A2L-based equipment to the market, and updated safety codes, such as CSA B52:23, are being adopted provincially over time. Contractors should stay in close contact with local authorities and suppliers to track effective dates and installation requirements as the transition progresses.
Can I still sell SEER-rated units?
Only if they were manufactured before 2023 and are installed under approved exceptions, most regions are phasing this out.
What tools do I need for A2L systems?
You’ll need A2L-compatible leak detectors, recovery machines, charging tools, and updated PPE.
Are inverter systems required for SEER2 compliance?
Not technically, but they’re becoming the default way to meet the new efficiency targets, especially in variable climates.
What should I tell homeowners about these changes?
Focus on comfort, energy savings, and long-term performance. Frame it as a chance to upgrade, not a forced change.
Bottom line: Don’t fall behind
There’s no pause button on these changes. SEER2 and A2L are here. Inverter systems are already in customer homes. Contractors who get ahead now will have the edge: better installs, fewer callbacks, and smoother inspections.
- Check regional SEER2 rules before quoting jobs
- Lead with inverter-driven equipment where possible
- Get your A2L training and tools lined up this fall
