HVAC Refrigerants: R-22 vs R-410A and Beyond

Refrigerant is essential for AC operation, but types have changed due to environmental regulations. Here is what you need to know.

What Is Refrigerant?

Refrigerant is the chemical that cycles through your AC system, absorbing and releasing heat to provide cooling.

R-22 (Freon)

Status - Production banned in US as of 2020 - No longer manufactured or imported - Only reclaimed/recycled available

Why Phased Out - Depletes ozone layer - Environmental regulations - International agreements

Impact on Homeowners - Existing R-22 systems can still operate - Repairs becoming expensive (scarce refrigerant) - Leaks are costly to repair - Consider replacement if major repair needed

R-410A (Puron)

Current Standard - Does not deplete ozone - More efficient than R-22 - Higher operating pressures - Used in most systems since mid-2000s

Characteristics - Cannot be used in R-22 systems - Requires compatible components - Generally reliable

Future Status - Will eventually be phased down - High global warming potential - Newer alternatives emerging

Newer Refrigerants

R-32 - Lower global warming potential - Used in some new equipment - More efficient than R-410A

R-454B - Next generation option - Very low global warming potential - Beginning to appear in new equipment

Practical Implications

If You Have R-22 System - Budget for eventual replacement - Expensive to repair leaks - May make sense to replace vs. repair

If Buying New Equipment - Will use R-410A or newer - Check for future-proof options - Consider refrigerant availability long-term

Refrigerant Leaks - System loses cooling capacity - Never normal to add refrigerant frequently - Leaks should be repaired, not just recharged

Bay Area Notes

Our moderate climate means:

• AC systems may last longer (less use)
• R-22 systems might still work well
• Replace based on repair costs vs. age
• Consider heat pump for new installations