Refrigerant Phasedown: How NYC Buildings Should Prepare
The EPA's phasedown of high-GWP refrigerants is already reshaping commercial HVAC across New York City. Here's what facility managers need to know—and do—before costs surge and options disappear.
What's Happening with Refrigerants?
In line with the global movement to reduce greenhouse gas emissions, the EPA's phasedown of high-GWP refrigerants like R-410A is officially underway. Enacted through the American Innovation and Manufacturing (AIM) Act, the mandate restricts the production and import of hydrofluorocarbons (HFCs) — with progressively tighter limits through 2036 and beyond.
For commercial buildings throughout New York City, this change is not a distant deadline. It's reshaping how HVAC systems are designed, installed, and serviced right now. Buildings that haven't begun assessing their exposure are already behind.
already active
R-454B at 466
switching to R-454B
Why This Is Important for Your NYC Building
The phasedown is not just an environmental initiative — it's a regulatory and financial shift with direct operational impact on every commercial property in Brooklyn, Manhattan, Queens, the Bronx, and Staten Island.
As production limits tighten, the supply of R-410A will shrink while demand from aging systems remains high. The result: refrigerant prices are already rising, and service calls for legacy equipment will become increasingly expensive — and eventually impossible to fulfill at any price.
- Fines for using non-compliant refrigerants in retrofit or new equipment are significant
- R-410A scarcity will make routine service calls cost-prohibitive within a few years
- Equipment manufacturers are already discontinuing R-410A product lines for 2025 and beyond
- Older systems using phased-out refrigerants contribute to higher LL97 carbon emission penalties
- Buildings left unaddressed face emergency replacement at surge pricing
What Are the New Refrigerant Alternatives?
Emerging lower-GWP refrigerants are already being integrated into new HVAC equipment shipped to NYC commercial facilities. The transition isn't hypothetical — it's on the showroom floor today.
| Refrigerant | GWP | Status | Common Application | Retrofit Compatible? |
|---|---|---|---|---|
| R-410A | 2,088 | Being phased out | Most existing commercial split systems, RTUs | N/A — legacy |
| R-454B | 466 | Primary replacement | New commercial rooftop units, large split systems | No — new equipment required |
| R-32 | 675 | Widely available | Smaller commercial splits, VRF systems | No — new equipment required |
| R-290 | 3 | Niche/emerging | Small commercial standalone units | No — specialized equipment |
While these alternatives significantly reduce carbon footprint and comply with upcoming LL97 and EPA regulations, retrofit compatibility is limited. In most cases, a full system upgrade will be necessary — which is exactly why early planning matters so much for NYC facility managers operating on capital improvement timelines.
Is Your Building Using a Phased-Out Refrigerant?
A Denair refrigerant audit identifies every system at risk — before an emergency forces your hand. Brooklyn, Manhattan, Queens, the Bronx, and Staten Island.
How Should NYC Facility Managers Prepare?
The window to act strategically — rather than reactively — is narrowing. Here are the three concrete steps every NYC building manager should be taking right now.
Review Your Existing Systems
Identify every unit still using phased-out refrigerants — including rooftop units, split systems, computer room cooling, and any legacy packaged equipment. This audit becomes the foundation of your replacement roadmap and capital planning.
Plan Early Replacements
Don't wait for a system failure during peak season when compliant equipment is backordered and service crews are overwhelmed. Buildings with planned replacement schedules — aligned to budget cycles and building occupancy — avoid the surge pricing that reactive replacements guarantee.
Partner with Certified HVAC Experts
Transitioning to new refrigerants involves proper handling certifications, system redesign, pressure testing, and compliance documentation. NYC buildings need HVAC partners with factory certifications — not contractors who handle residential calls between commercial jobs.
Denair HVAC: Your Refrigerant Transition Partner
At Denair HVAC, we've been guiding NYC commercial facility managers through complex HVAC transitions since 2006. Our factory-certified technicians and engineering team bring the depth that refrigerant phasedown compliance demands — across all five boroughs.
We guide building owners, engineers, and facility managers through the complete refrigerant transition process:
Our commitment is simple: optimize your building's HVAC performance while ensuring full regulatory compliance — before the phasedown creates an emergency rather than an opportunity.
Frequently Asked Questions
NYC facility managers ask us these questions constantly. Here are the answers your building needs.
What refrigerants are being phased out in NYC buildings?
The EPA's phasedown primarily targets R-410A and other high-GWP HFC refrigerants under the AIM Act. These are the most common refrigerants found in commercial split systems, rooftop units, and chillers currently operating across NYC. Production and import limits took effect in 2025, with progressively tighter restrictions through 2036.
What are the best low-GWP refrigerant alternatives for NYC commercial buildings?
The leading alternatives include R-454B (GWP of 466, primary replacement for large commercial rooftop equipment), R-32 (GWP of 675, common in VRF and split systems), and R-290 propane (GWP of 3, for smaller standalone commercial units). R-454B is currently the most widely deployed replacement for large commercial HVAC installations in NYC.
Can my existing NYC building's HVAC system be retrofitted to new refrigerants?
In most cases, no. New lower-GWP refrigerants are not backward-compatible with equipment designed for R-410A — seals, lubricants, compressor tolerances, and pressure ratings differ significantly. A certified HVAC engineer should assess each unit, but the majority of buildings will require full system replacement rather than a simple refrigerant swap.
How does the refrigerant phasedown affect LL97 compliance for NYC buildings?
The phasedown and LL97 are separate but complementary pressures. LL97 penalizes buildings based on carbon emissions intensity — and older HVAC systems using phased-out refrigerants are typically less efficient, driving higher carbon output. Upgrading to compliant, lower-GWP systems often simultaneously improves your LL97 position and reduces operational costs.
When should NYC facility managers start planning for the refrigerant transition?
Now. R-410A production limits are active for 2025, and prices are already rising as supply tightens. Buildings that wait for an emergency breakdown will face limited equipment availability, surging refrigerant costs, and constrained technician bandwidth. A proactive refrigerant audit and replacement plan — implemented before peak failure season — is the most cost-effective approach by a significant margin.
Don't Let Refrigerant Regulations Catch Your Building Unprepared
Contact Denair HVAC to discuss a strategic refrigerant transition plan tailored to your NYC facility — before limited supply and surge pricing make the decision for you.
