Refrigerant Leak Detection in Lebanon, IN
Why we don't just "top off and go"
A lot of HVAC shops in central Indiana will pull up, gauge your system, see it's low, charge $250-$400 in refrigerant, and leave. Six months later you're calling again. Wash, rinse, repeat — they bill another $300, you're out $600/year on a problem that costs $295 to find permanently.
That's not a service. That's a recurring revenue model at your expense. And it's illegal under EPA Section 608 to knowingly add refrigerant to a leaking system without repairing it. We don't do that. If we find low refrigerant, we find the leak. If we can't find it that day, we deploy UV dye and come back. We write you a leak location report with photos. Then you decide repair vs replace with full information.
Our detection process
- Pressure verification — gauges on high and low side, compare against the unit's nameplate spec for the actual outdoor temperature. Confirms the system is undercharged (not just sluggish from a dirty coil or restricted airflow).
- Visual inspection — accessible line set, schrader valves, service ports, outdoor coil. Look for oil staining (refrigerant leaks leave compressor oil residue at the failure point).
- Electronic sniffer survey — calibrated halide leak detector (we use the Inficon TEK-Mate or similar pro-grade unit). Walk every accessible joint, every coil bend, every service port. Sensitivity to 0.1 oz/year leak rate.
- Bubble-soap confirmation on suspect joints — for visual proof and photo documentation.
- If no leak found on visual + sniffer: UV dye injection. We add fluorescent dye to the refrigerant, you run the system for 24-72 hours, we come back with a UV lamp and find the dye trail. Catches the trickiest leaks (evaporator coil micro-perforations, slow line set leaks).
- Written leak report — exact location, severity, repair options with costs.
Where leaks happen on Boone County AC systems
| Location | Frequency | Repair cost range |
|---|---|---|
| Schrader valve (service port) | ~25% | $185 (cap + valve core) |
| Brazed joints on the outdoor line set | ~20% | $395-$595 |
| Evaporator coil (indoor) | ~30% | $1,495-$2,495 (coil replacement) |
| Condenser coil (outdoor) | ~10% | $1,895-$2,895 |
| Compressor housing weld | ~5% | Compressor replacement, $1,895-$3,495 |
| Line set damage (rodent chew, lawn equipment) | ~10% | $395-$795 (re-pipe section) |
2026 reality: R-410A vs R-454B
Refrigerant phase-out matters for your leak repair decision. The HVAC industry transitioned from R-410A to R-454B and other low-GWP refrigerants starting January 2025. Equipment manufactured in 2025+ uses R-454B. Existing R-410A systems are not being banned, but R-410A is being phased down — prices have already roughly tripled from 2023 levels and supply will tighten further through 2030.
What that means for a leak repair on an R-410A system:
- System under 8 years old, leak is repairable: Fix it. R-410A still available, repair is cheaper than replacement.
- System 8-12 years old, expensive coil leak: Run the math both ways. R-410A recharge cost has risen significantly; sometimes replacement becomes the smarter play.
- System 12+ years old: Almost always replace. The R-410A pricing trajectory makes long-term operation of older units increasingly expensive.
See our R-410A vs R-454B explainer for the full picture.
EPA 608 certified — why it matters
Refrigerant handling is federally regulated. EPA Section 608 requires technicians to be certified to recover, recycle, or charge refrigerant. Owner Zach Woodall is EPA 608 certified, and we maintain proper recovery equipment on the truck. Practical implications:
- We recover refrigerant cleanly during repairs — never vent it to atmosphere (illegal and unprofessional)
- We maintain the records EPA requires for refrigerant transactions
- If you sell your home and an inspector asks about refrigerant work, we have the documentation
Same-day Boone County service
Lebanon, Zionsville, Whitestown, Thorntown, Advance, Jamestown — same-day for diagnostic. Carmel, Westfield, Brownsburg, Avon, Sheridan — usually same-day, occasionally next-business-day during peak season.
Frequently Asked Questions
How do I know if my AC has a refrigerant leak?
Warm air, frost on line set, longer cycles, hissing, higher bills, gradual decline.
Is it cheaper to just add refrigerant than find the leak?
Short-term yes, illegal under EPA 608 without repair, expensive over 2-3 years. Find and fix wins.
How much does refrigerant leak detection cost?
$295 flat-rate electronic detection. +$95 if UV dye trace needed.
What does it cost to fix the leak once it's found?
$185 (schrader) to $2,895 (coil). Depends entirely on location and refrigerant type.
Can I find a refrigerant leak myself with a soap-and-water test?
Sometimes for accessible braze joints. Most residential leaks are too small or inaccessible for DIY detection.