An AC refrigerant recharge typically costs $200 to $800 for an R-410A or R-454B system, depending on how much refrigerant is needed and your local labor rates. Recharging an older R-22 system often costs $500 to $1,500 or more because R-22 is no longer produced in the U.S. The key point: your AC doesn’t use up refrigerant, so if it’s low, there’s a leak, and leak detection and repair add to the cost.
Last updated: October 2026. Prices are typical U.S. ranges and vary by region, contractor and refrigerant market prices.
Recharge cost by refrigerant type
| Refrigerant | Used in | Typical price per pound (installed) | Typical recharge cost |
|---|---|---|---|
| R-410A | Most systems from about 2010 to 2024 | $50 to $125 | $200 to $800 |
| R-454B or R-32 | New systems from 2025 | $60 to $150 | $250 to $900 |
| R-22 | Most systems installed before 2010 | $100 to $200+ | $500 to $1,500+ |
A typical residential system holds roughly 2 to 4 pounds of refrigerant per ton, but a recharge usually only replaces the amount that’s leaked out. Many contractors also charge a service call fee of $75 to $200.
R-410A prices are expected to rise over time as production is phased down. See our R-410A phase-out guide.
Leak detection and repair costs
| Service | Typical cost |
|---|---|
| Leak detection (electronic, bubble or dye test) | $150 to $500 |
| Repair an accessible leak (valve, fitting, line set) | $200 to $1,500 |
| Replace the evaporator coil | $1,000 to $3,000 |
| Replace the condenser coil | $1,000 to $3,000 |
Why “just topping it off” is a bad deal
If a technician adds refrigerant without finding the leak, it will leak out again, often within weeks or months. Meanwhile the system runs low, works harder, and risks compressor damage. Ask for:
- Leak detection and the location of the leak.
- A repair quote.
- The amount of refrigerant added (in pounds) on your invoice.
Signs your AC is low on refrigerant
- Air from the vents is cool but not cold.
- Ice on the copper lines or indoor coil. See AC evaporator coil frozen.
- Hissing or bubbling sounds.
- Longer run times and higher electric bills.
- Warm air. See why is my AC blowing warm air.
Can you recharge an AC yourself?
No. Under federal law, refrigerants used in central air conditioners can only be purchased and handled by technicians certified under EPA Section 608. DIY “recharge kits” sold for cars don’t apply to home systems.
Repair or replace?
On an older system, especially one using R-22, a significant leak repair plus recharge can approach the cost of a new system’s down payment. Use the $5,000 rule in our repair vs. replace guide, and compare with the central AC replacement cost.
Frequently asked questions
How often does an AC need to be recharged?
Never, if there’s no leak. Refrigerant circulates in a sealed loop.
How much refrigerant does a 3-ton AC hold?
Roughly 6 to 12 pounds, depending on the system and the length of the line set. A recharge only adds what’s missing.
Is it worth recharging an R-22 system?
Only for a small, repairable leak on a system you plan to keep briefly. For major leaks, replacement is usually the better investment.
Disclaimer: prices are estimates for general information and are not quotes.