Hey There! Jake Here!
Let’s be real—permits can feel like a pain. Paperwork, inspections, timelines… ugh. But with PTACs using A2L refrigerants like R-32, that little permit can mean the difference between a compliant install and a liability nightmare.
Whether you're upgrading from an old R-410A model or doing a fresh install, the rules have changed. So I’m laying out what the 2025 codes say, when you legally need a permit, and how to stay clear of violations that’ll slow down your job.
Why Permits Exist in the First Place 🏗️
Permits aren’t just about government overreach. They exist to ensure that:
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Units are installed to manufacturer and safety standards
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Refrigerant handling follows EPA Section 608 protocols
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Fire hazards, electrical loads, and ventilation are properly addressed
With R-32 being mildly flammable (A2L classification), jurisdictions are taking a closer look. That means new install standards, placement limits, and ventilation rules under the 2024 International Mechanical Code (IMC).
So, while some minor repairs don’t need permits, a full PTAC unit swap often does—especially when R-32 is involved.
When You Need a Permit (and When You Don’t) 📋
Here’s a quick breakdown:
Permit Usually Required:
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Installing a new R-32 PTAC unit (wall cut or sleeve retrofit)
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Swapping out an R-410A or R-22 unit with an R-32 system
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Running new electrical circuits or upgrading breakers
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Adding ventilation or structural fire dampers
Permit Usually Not Required:
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Cleaning coils or replacing filters
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Changing thermostats (if wiring isn’t altered)
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Swapping identical units in commercial buildings (check local amendments)
Always check with your local authority having jurisdiction (AHJ), which may follow the International Residential Code (IRC) or IMC with amendments.
Pro tip? Some cities like New York, Chicago, and San Francisco have additional permit layers for anything involving refrigerants. Check their online portals before scheduling your crew.
Special Codes for A2L Refrigerants like R-32 🔥🧯
Now that R-32 is the new go-to in PTACs, the building codes have had to catch up. The ASHRAE 15.2 Standard covers refrigerant safety, and A2Ls like R-32 must follow specific volume limits, leak detection requirements, and spacing rules.
For example:
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Installations above certain refrigerant charge thresholds require ventilation or detection
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Units must not be placed in confined spaces without clear airflow
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Fire-rated sleeves or barriers are required in many multi-family buildings
If you’re not referencing the 2024 updates to ASHRAE 15.2 or the IMC, you’re probably installing blind.
Also note: some municipalities have adopted the UL 60335-2-40 4th Edition standards, which directly affect how PTACs using R-32 can be installed in hotel rooms, apartments, and assisted living facilities.
Licensing & Technician Requirements 🔧
In most states, if you’re handling R-32, you need:
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EPA 608 Certification (Type I or Universal)
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State HVAC or Mechanical License (varies)
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Local business license with refrigerant-handling endorsement
According to the EPA Section 608 Requirements, it’s illegal to service or install systems containing R-32 without proper credentials. Plus, mishandling can cost you thousands in fines.
Some states (like California and Washington) are moving toward refrigerant tracking logs and installation reporting. Don’t get caught off guard.
What Happens If You Skip the Permit? 😬
Sure, you might get away with it… until something goes wrong. Here's what skipping a permit can lead to:
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Voided manufacturer warranties
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Code enforcement violations and stop-work orders
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Fines of $500–$5,000 depending on jurisdiction
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Delays in occupancy permits (hotels, multi-family)
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Liability if a fire or refrigerant leak occurs
Even worse, a failed inspection after the fact might force you to uninstall and redo the job. That’s labor and material down the drain.
Jake’s Final Advice 📌
R-32 PTACs are efficient, powerful, and eco-friendlier—but they come with new rules. If you’re upgrading, get familiar with the codes before cutting into walls.
Always call your local permitting office before starting an install. Some cities even offer permit applications online—super handy.
And if you’re still shopping for the best R-32 PTAC units that meet the new UL and ASHRAE standards, check out this lineup from The Furnace Outlet. They’re built for modern compliance and come pre-tested for quality.
Need to train yourself or team on safety with R-32 PTAC systems? Check out How to Train Your Team on R-32 PTAC Safety—Without the Snoozefest.
As always, play it smart, stay above board, and don’t let the permit police wreck your day.
- Jake
