R-32 PTACs: What the Refrigerant Change Means for Your Property
If you've shopped for PTACs recently, you've probably seen "R-32" or "R-454B" in product names. That's because the industry has moved away from R-410A, the refrigerant used in most PTACs for the past 15+ years. Here's what changed and what it means for hotels, apartments and property managers.
Why the refrigerant changed
Under the federal AIM Act, the U.S. Environmental Protection Agency (EPA) set limits on the global warming potential (GWP) of refrigerants used in new air conditioning and heat pump equipment. For residential and light commercial systems, new equipment must use refrigerants with a GWP below 700. R-410A has a GWP of about 2,088, so manufacturers switched to lower-GWP alternatives.
| Refrigerant | Approx. GWP | Safety class | Where you'll see it |
|---|---|---|---|
| R-410A | 2,088 | A1 | Older and existing PTACs |
| R-32 | 675 | A2L | Most new Amana and Friedrich PTACs |
| R-454B | 466 | A2L | Some new GE Zoneline models |
What "A2L" means
R-32 and R-454B are classified as A2L refrigerants: low toxicity and mildly flammable. They are much harder to ignite than common flammable refrigerants, and equipment designed for them includes safety measures such as refrigerant leak detection or mitigation where required. For owners, day-to-day operation is the same. The main differences are for installers and service technicians, who need A2L-rated tools and training.
What it means for your property
Your existing R-410A units can keep running
The rules apply to new equipment. You don't need to replace working R-410A PTACs, and they can still be serviced. Over time, though, R-410A refrigerant may become more expensive as supply declines.
Replacements will usually be R-32 or R-454B
New PTACs from major brands now ship with lower-GWP refrigerants. They are designed to fit standard 42" wall sleeves, so a replacement chassis can often go into your existing sleeve. Always confirm sleeve compatibility, voltage and plug type for the specific model.
Don't mix refrigerants
A unit must only ever be charged with the refrigerant it was designed for. R-32 can't be added to an R-410A unit, or vice versa. Make sure your service contractor knows which units at your property use which refrigerant.
Efficiency often improves
Many new-generation PTACs pair the new refrigerants with better compressors, inverter technology and smarter controls. Replacing old electric-heat units with PTAC heat pumps can reduce heating costs significantly.
Planning ahead
- Keep a list of every unit's model number, age and refrigerant type.
- Budget for gradual replacement of the oldest and least efficient units first.
- Choose a service contractor trained and equipped for A2L refrigerants.
- When replacing several units, standardize on one model to simplify spare parts and service.
Upgrading to R-32 PTACs?
Tell us the models you have now. We'll match current R-32 and R-454B replacements and quote your project.
Request a Quote →Call (800) 574-4561
