R-410A Is Being Phased Out. Here’s What Every GTA Commercial Property Manager Needs to Know Right Now.
If your commercial building runs rooftop units, split systems, or any air-cooled HVAC equipment installed in the last 20 years, there’s a high probability it runs on R-410A refrigerant. And as of January 1, 2026, the production and import of new R-410A equipment is banned in Canada.
This is not a future concern. It is happening now — and the financial and operational consequences for GTA building owners and property managers who aren’t prepared are significant.
This guide covers exactly what the R-410A phase-out means for your portfolio, what your compliance obligations are, how repair costs are changing, and what practical steps to take before the cost of inaction compounds.
What Is the R-410A Phase-Out and Why Is It Happening?
R-410A has been the dominant refrigerant in commercial and residential HVAC systems across North America since it replaced R-22 (Freon) in the late 1990s. It works well — but it has one serious problem: an extremely high Global Warming Potential (GWP) of 2,088. That means one pound of leaked R-410A is climatically equivalent to releasing over 2,000 pounds of carbon dioxide into the atmosphere.
Under Canada’s HFC (hydrofluorocarbon) phase-down regulations, aligned with the Kigali Amendment to the Montreal Protocol and enforced through the federal Ozone-depleting Substances and Halocarbon Alternatives Regulations (ODSHAR), Canada has committed to an 85% reduction in HFC consumption over the coming decade. The first major milestone: a ban on new R-410A equipment production and imports effective January 1, 2026.
The phase-out follows a stepped timeline:
• 2025: First reduction phase — new imports of high-GWP refrigerants begin to be restricted
• January 1, 2026: Ban on new equipment using R-410A. New commercial HVAC installations must use refrigerants with a GWP below 700
• 2026–2036: Continued reductions in R-410A supply availability, rising service costs
• Post-2036: Only low-GWP refrigerants permitted in any new systems
Does This Mean I Have to Replace My HVAC Systems Immediately?
No — and this is an important distinction to understand. Existing R-410A systems are not illegal. You are not required to replace functioning equipment immediately. R-410A refrigerant remains available for servicing existing units from existing stockpiles and reclaimed supply.
What has changed is the economics and the compliance landscape around those systems:
• Repair costs are rising fast. As R-410A production quotas drop, supply tightens and prices spike. What cost $8–12 per pound in 2023 has risen to $25–45 per pound in some markets. For a commercial rooftop unit requiring a recharge, that cost increase is substantial.
• You cannot retrofit. R-410A systems cannot be converted to use new refrigerants like R-454B or R-32. The equipment was not designed or safety-certified for A2L refrigerants. If a unit fails beyond economical repair, replacement is the only path forward.
• New leak detection requirements apply now. Any commercial system holding 10 kg or more of refrigerant is now required to have automatic leak detection (ALD) under the 2026 ODSHAR regulations. For most GTA commercial buildings running multiple rooftop units, this is an immediate compliance obligation.
What Replaces R-410A? Understanding A2L Refrigerants
New commercial HVAC equipment is transitioning to A2L refrigerants — a classification meaning low toxicity, mildly flammable. The two most common replacements entering the GTA market are:
• R-454B (Puron Advance / Opteon XL41): A blend of R-32 and R-1234yf with a GWP of 466 — 78% lower than R-410A. Selected by major manufacturers including Carrier for commercial rooftop units. Performance is comparable to R-410A.
• R-32: A single-component refrigerant with a GWP of 675. Already widely used in newer equipment and increasingly common in GTA commercial installations.
The “mildly flammable” classification of A2L refrigerants sounds alarming but is well-understood in the industry. These are not high-risk materials when handled correctly — however, they do require technicians to hold specific A2L handling certification and use updated safety equipment. Not all GTA HVAC contractors have completed this training. Before signing any new installation contract, confirm your contractor is A2L certified.
The Real Financial Impact for GTA Commercial Buildings
Property managers need to think about this transition in two distinct financial buckets:
1. Rising Repair Costs on Existing R-410A Systems
Every time an R-410A system leaks and needs a recharge, you are paying an increasingly large refrigerant premium. As supply continues to tighten through 2026–2036, these costs will compound. For a building spending $50,000 annually on HVAC service, a significant portion of that budget will shift toward refrigerant costs alone — without improving equipment performance or reliability.
A unit that repeatedly needs refrigerant top-ups is a unit with a leak. In 2026, that leak is significantly more expensive to address than it was two years ago, and will only become more so.
2. Capital Planning for Equipment Replacement
The refrigerant transition compresses the useful life of older R-410A equipment. A rooftop unit you planned to run until 2030 may become uneconomical to service by 2027 as R-410A costs rise. Your HVAC capital plan needs to account for this now.
New A2L equipment carries a 10–15% price premium over equivalent R-410A units, but that cost is partially offset by higher energy efficiency — SEER2 ratings of 18–22 are now common in mid-range commercial equipment, compared to 13–16 SEER on older R-410A units. The efficiency gains alone can justify accelerated replacement for aging systems.
Available Incentives for GTA Building Owners
The good news: the transition to A2L equipment aligns with Ontario’s energy efficiency incentive programs, and significant rebate dollars are available to offset capital costs:
• Save on Energy (Enbridge Gas): Enhanced incentives currently available for commercial buildings replacing aging HVAC equipment with high-efficiency A2L systems
• Canada Greener Buildings Grant: Federal funding available for qualifying commercial energy efficiency retrofits
• Municipal programs: Select GTA municipalities offer supplementary incentives for commercial building upgrades — eligibility varies by location
Accessing these programs requires proper documentation of the retrofit scope and equipment specifications. Working with an experienced GTA commercial HVAC contractor who understands incentive program requirements is essential to maximizing available funding.
5 Actions GTA Property Managers Should Take Now
1. Conduct a full refrigerant audit of your portfolio.
Identify which units run on R-410A, how old they are, their refrigerant charge weight (critical for the 10 kg ALD compliance threshold), and their maintenance history. You cannot make informed capital decisions without this baseline.
2. Flag all units over 10 kg of refrigerant charge.
These systems require automatic leak detection under the 2026 ODSHAR regulations immediately. Confirm compliance status with your HVAC contractor and schedule ALD installation if not already in place.
3. Revise your HVAC capital plan through 2028.
Adjust replacement timelines for aging R-410A equipment. A unit planned for 2029–2030 replacement may need to move to 2026–2027 as service costs rise. Build the 10–15% A2L equipment premium into your capex projections.
4. Verify your HVAC contractor is A2L certified.
A2L refrigerant handling requires specific certification. Before any new equipment installation or service involving A2L refrigerants, confirm your contractor holds the applicable training. This protects your building, your tenants, and your liability.
5. Explore incentive programs before you need them.
Don’t wait for an emergency replacement to think about rebates. Proactive equipment planning allows you to structure projects to maximize incentive eligibility — reactive emergency replacements rarely qualify.
How Kontrol Buildings Supports the R-410A Transition
Kontrol Buildings has been helping GTA commercial, industrial, and multi-residential property managers navigate HVAC transitions for over 15 years. Our Local 787 United Association certified technicians are fully trained and certified for A2L refrigerant handling and installation across all major commercial equipment platforms.
We provide:
• Refrigerant audits across your GTA portfolio — identifying which systems are at risk and what your compliance obligations are
• Honest replacement vs. maintenance assessments with no pressure to upsell
• Full HVAC retrofit and design-build for A2L-compliant system replacements
• Incentive program navigation — helping you access Save on Energy, Canada Greener Buildings, and applicable municipal programs
• Automatic leak detection installation for systems above the 10 kg ODSHAR threshold
• Transparent pricing with no hidden truck charges, fuel surcharges, or surprise fees
Trusted by Dream REIT, BGO, BGIS, Avison Young, JLL, and Kinvest across 400+ properties in Toronto, Mississauga, Vaughan, Brampton, Markham, Richmond Hill, Oakville, Scarborough, Etobicoke, North York, and Burlington.
Frequently Asked Questions
Do I have to replace my R-410A systems right now?
No. Existing R-410A systems are not illegal and do not need immediate replacement. However, servicing costs are rising as supply tightens, and new compliance requirements apply to systems over 10 kg of refrigerant charge. Plan proactively rather than reactively.
Can I retrofit my existing R-410A rooftop unit to use a new refrigerant?
No. R-410A systems cannot be converted to use A2L refrigerants like R-454B or R-32. The equipment was not designed or safety-certified for these refrigerants. Replacement is the only option when a unit reaches end of economical life.
What is the 10 kg threshold and does it apply to my building?
Any commercial HVAC system holding 10 kg or more of refrigerant now requires automatic leak detection under Canada’s 2026 ODSHAR regulations. Most GTA commercial rooftop units exceed this threshold. Contact Kontrol Buildings for a compliance audit.
How do I know if my HVAC contractor is A2L certified?
Ask directly before signing any installation contract. A2L refrigerant handling requires specific training and certification. Kontrol Buildings technicians are fully certified for A2L handling and installation across all major commercial platforms.
Are there rebates available for replacing R-410A equipment in Ontario?
Yes. Enbridge Gas Save on Energy programs and Canada Greener Buildings grants can significantly offset retrofit capital costs for qualifying GTA commercial buildings. Kontrol Buildings helps clients identify and access applicable incentive programs as part of every project scope.
Book a Free Refrigerant Audit for Your GTA Portfolio
Not sure where your buildings stand on R-410A compliance? Kontrol Buildings offers a free, no-obligation site inspection — a senior technician reviews your mechanical systems, identifies compliance gaps, and gives you an honest assessment of your options.
Call 1-833-4KONTROL (1-833-456-6876).
Or book online at kontrolbuildings.ca/contact
Tags: R-410A phase-out, commercial HVAC Toronto, HVAC refrigerant Canada 2026, A2L refrigerant GTA, HVAC retrofit Toronto, commercial HVAC compliance Ontario, GTA property managers, ODSHAR regulations, R-454B commercial HVAC
Category: Commercial HVAC Insights
Author: Kontrol Buildings — GTA Commercial HVAC Experts