AC Refrigerant: When You Need a Recharge
Refrigerant is the lifeblood of your air conditioner. If your system is low on refrigerant, it is not because it was "used up" — it means there is a leak. Understanding how refrigerant works helps you make better maintenance decisions.
Signs of Low Refrigerant
- Air from vents feels warm or not as cold as usual
- The system runs constantly without reaching the set temperature
- Ice buildup on the refrigerant lines or evaporator coil
- Hissing or bubbling sounds near the indoor unit
- Higher electricity bills with no change in usage
Common Refrigerant Types
| Type | Status | Found In |
|---|---|---|
| R-22 (Freon) | Phased out (2020) | Pre-2010 systems |
| R-410A (Puron) | Current standard | Most systems 2010-2024 |
| R-32 | Next generation | Newer high-efficiency units |
| R-454B | Emerging (2025+) | Latest low-GWP systems |
Can You Recharge It Yourself?
No. Under EPA regulations (Section 608), handling refrigerants requires certification. More importantly, simply adding refrigerant without fixing the leak is a temporary solution — the system will lose charge again. A professional will leak-test the system, repair the leak, evacuate moisture, and recharge to manufacturer specifications.
Cost of a Refrigerant Recharge
A typical recharge costs $150-$400 including labor. If the leak requires significant repair (like replacing a coil), costs can reach $500-$1,500. R-22 is much more expensive ($50-$80/lb) since it is no longer manufactured. If your system uses R-22, consider upgrading to a new unit rather than recharging.