AC Refrigerant Leak Repair in Las Vegas

The short answer

A refrigerant leak is repairable in most cases — but the repair is “find it, fix it, recharge it,” never just “add more freon.” Refrigerant circulates in a sealed loop and is not consumed; if your system is low, it leaked. Topping off without fixing the leak is money thrown away, and in Las Vegas heat a low system will destroy its compressor if you let it limp along.

Safe checks you can do yourself

• Look at the larger insulated copper line at the outdoor unit — ice on it in 110°F weather is a strong low-charge signal
• Check whether the system runs nonstop but the house never reaches setpoint by mid-afternoon
• Listen for hissing or bubbling at the outdoor unit or the indoor coil
• Replace the filter and make sure all supply vents are open — restricted airflow mimics low refrigerant and can freeze the coil too

That is where DIY stops. Refrigerant handling requires EPA 608 certification, and gauges on a live system can injure the untrained. From here it is a technician’s job.

Common causes and what the repair looks like

R-22 vs R-410A: why the refrigerant type decides everything

R-22 (“freon”) was phased out of production, and remaining supply is reclaimed — which is why it runs $90–$250 per pound. A typical residential system holds 5–10 pounds; recharging a leaky R-22 system can cost more than the system is worth, and it will leak again. R-410A, standard since roughly 2010, costs $50–$90 per pound and makes leak repair economically sensible in most cases. If your R-22 system needs a major recharge, ask the technician to price the repair and a replacement quote — then apply the $5,000 rule.

What the technician does on a leak call

1. Confirm low charge — pressures and superheat/subcooling readings, not guesswork
2. Locate the leak — electronic leak detector, UV dye, or nitrogen pressure test for hard cases
3. Quote the real repair — fix the leak point, not just the symptom; you approve the price first
4. Repair and pressure-test — braze, component replacement or valve work, verified under pressure
5. Evacuate and recharge — the system is vacuumed and charged to the manufacturer’s specified weight, then verified with temperature split

What it costs in Las Vegas

Ranges aggregated from HomeGuide, Angi and HomeAdvisor cost guides and Las Vegas–area contractor pricing pages, collected October 2026.

Exact price only after diagnosis — call +1 (725) 360-1290. Full list on the Las Vegas AC repair cost page.

Related problems

• AC running but not cooling
• AC blowing warm air
• Compressor repair
• AC repair cost guide

Frequently asked questions

Can an AC refrigerant leak be repaired?

Yes, in most cases. The repair is two jobs, not one: find and fix the leak (a braze repair on an accessible line, or a coil replacement if the leak is in the coil), then recharge the system to the correct weight of refrigerant. Simply “topping off” a leaking system without fixing the leak wastes refrigerant and money — the system will be low again in weeks or months.

Is it worth fixing a freon leak?

Usually yes on newer R-410A systems — leak repair plus recharge is far cheaper than replacement. On older R-22 systems the math changes: R-22 is phased out and costs $90–$250 per pound, and a system needing several pounds every summer is often better replaced. Run the $5,000 rule with real numbers before deciding.

Where is the most common place for an AC refrigerant leak?

The evaporator coil is the most common leak site — formicary corrosion from household air creates microscopic pinholes in the copper. After that: the condenser coil (vibration and stone strikes), service valve cores, and flare or braze joints on the line set. Electronic leak detectors and nitrogen pressure testing find the exact spot.

How do I know if my AC is low on refrigerant?

Signs: the system runs constantly but cools poorly, air from vents is barely cool, ice forms on the refrigerant lines or indoor coil even in extreme heat, you hear hissing or bubbling near the unit, or your power bill jumps without explanation. Refrigerant is not consumed like fuel — low charge always means a leak.

Is a refrigerant leak dangerous?

R-410A and R-22 are not flammable and not acutely toxic at the concentrations a home leak produces, but they displace oxygen in enclosed spaces and should not be handled without certification. The real danger of ignoring a leak is to your compressor: low refrigerant starves it of cooling and oil return, which destroys it over time.

How much does refrigerant leak repair cost in Las Vegas?

Leak detection typically runs $150–$500, the leak repair itself varies by location, and recharge is priced per pound ($50–$90 for R-410A, $90–$250 for R-22). Sourced ranges are on the cost page.