AC refrigerant leak cost usually runs $200 to $1,500 for the repair, plus $100 to $300 to find the leak and about $200 to $500 or more to recharge the system. The refrigerant matters most: older R-22 systems cost far more to refill, so a leak in one is often a reason to replace the AC.
Prices checked on November 4, 2026. Sources disagree on per-pound prices, so we show each one. Only a certified technician should handle refrigerant.
AC refrigerant leak cost at a glance
| Service | Typical cost |
|---|---|
| Service call or diagnostic fee | $75–$200 (HomeGuide) |
| Leak detection | $100–$300 (Angi); $100–$330 (HomeGuide) |
| Leak repair | $200–$1,500 (HomeGuide) |
| Recharge, national average | $300 (Angi; most pay $200–$500) |
| Full R-22 recharge with leak repair | $800–$3,000+ (HomeGuide) |
However, a refrigerant leak isn’t just a refill job. Angi notes that you’ll only need more refrigerant if your AC has a leak, and HomeGuide says a reputable technician will find and fix the leak before adding expensive R-22. Otherwise, you’ll pay to recharge it again.
AC refrigerant leak cost by refrigerant type
| Refrigerant | Typical systems | Price per pound |
|---|---|---|
| R-22 | ACs built before 2010 | $50–$80 (Angi); $90–$150 installed (HomeGuide) |
| R-410A | ACs built 2010 to 2025 | $12–$25 (Angi recharge guide); $40–$75 (Angi R-410A guide) |
| R-454B | ACs built in 2025 or later | About $80 (Angi) |
The total AC refrigerant leak cost also depends on the system’s size. According to Angi, most ACs hold 2 to 4 pounds per ton, so a 3-ton system holds roughly 6 to 12 pounds. For example, Angi’s R-410A guide puts a full 3-ton recharge at $480 to $800, including labor.
Signs of an AC refrigerant leak
- Warm air from the vents while the AC runs.
- Also, ice on the indoor coil or the refrigerant lines.
- In addition, a hissing sound from the unit or the lines.
- Finally, liquid pooling near the indoor unit.
Trane lists hissing, pooling liquid and a frozen indoor coil as signs of a leak, and it says to call for service right away. Angi also tells homeowners to note warm air, ice buildup or hissing to share with the technician. Moreover, if you see ice, Carrier says to shut the system off to protect the compressor. For other causes, see our AC not cooling guide.
Why AC refrigerant leak cost is higher with R-22
The EPA ended production and import of R-22 in the United States on January 1, 2020. Even so, you may keep using an existing R-22 system, and technicians can service it with recovered, reclaimed or previously produced refrigerant, according to the EPA and Carrier.
However, supply keeps shrinking. As a result, Carrier warns that the cost to fix a leak may eventually exceed the value of the unit. Similarly, HomeGuide suggests replacement when an R-22 system is 15 years or older, needs major repairs or has had several leaks.
Repair or replace: is the AC refrigerant leak cost worth it?
- Repair it if the system is newer and uses R-410A. For instance, This Old House suggests repairing ACs under 10 years old when the repair is under $1,000.
- Replace it if it uses R-22 and needs a large recharge, as Carrier and HomeGuide suggest.
- Use the 50% rule: HomeGuide says that if a repair costs more than 50% of a new system, replacement is the smarter investment.
- Check the coil: a leak in the evaporator coil may mean replacing the coil, which HomeGuide puts at $1,000 to $4,500.
For example, a $1,200 R-22 leak repair and recharge on a 16-year-old AC is a strong case for replacing it. On the other hand, a $400 leak repair on a 6-year-old R-410A system is usually worth doing. See our guides to AC coil replacement cost, AC replacement cost and the R-410A phase-out.
Why you shouldn’t recharge it yourself
Under Section 608 of the Clean Air Act, it’s illegal for anyone servicing or repairing an AC to intentionally vent refrigerant, the EPA says. In addition, HomeGuide warns that refrigerant is toxic and can cause severe illness or death if mishandled. Therefore, hire a licensed HVAC technician, and ask them to recover any refrigerant they remove.
Related guides: If the repair is expensive, run the numbers in our repair or replace calculator.
AC refrigerant leak cost: FAQ
How much does it cost to find a refrigerant leak?
Generally, leak detection costs $100 to $300, according to Angi, or up to $330, according to HomeGuide.
Is it worth fixing a refrigerant leak in an old AC?
Often not if it uses R-22. Carrier says replacing the entire unit is usually more cost-effective than retrofitting an R-22 system. For a newer R-410A system, however, a repair often makes sense.
Can a refrigerant leak be dangerous?
It can be. HomeGuide warns that refrigerant is toxic if mishandled, so leave it to a technician.
How long does an AC recharge last?
Once the leak is fixed, the refrigerant shouldn’t need topping up. Angi notes that you only need more refrigerant when there’s a leak.
Sources and review
Sources: Angi, AC recharge cost (2026); Angi, R-410A cost per pound (2026 data); HomeGuide, fair price for R-22 refrigerant (2025); HomeGuide, AC repair cost; EPA, residential air conditioning and the phaseout of HCFC-22 (August 2018); Carrier, R-22 refrigerant (October 8, 2026); Trane, troubleshooting tips (refrigerant leak signs) (modified July 17, 2025); This Old House, AC compressor cost (updated August 31, 2026). All checked on November 4, 2026.
Written by: HVAC Switch. Last updated: November 4, 2026. Read our editorial policy to learn how we research prices, or contact us if you spot an error.