🏠 Location: Southlake, TX 76092
🔧 Issue: AC not cooling; system empty of refrigerant
Our homeowner felt warm air throughout the house. Gauges showed zero pressure—total refrigerant loss. Instead of guessing which part leaked and billing thousands, Greentech launched a systematic, money-saving investigation:
Standard Leak Detection:
1️⃣ Added trace refrigerant + dry nitrogen, pressurized to 350 psi.
2️⃣ Scanned evaporator, condenser coils and all accessible line set areas with electronic detector—no alarm.
Advanced Leak Detection:
3️⃣ Closed condenser service valves, isolated attic line set, pressurized to 350 psi again —pressure dropped, proving a hidden line-set leak.
4️⃣ Discussed recent roof replacement with owner; a nail puncture was the likely culprit.
🛠️ Solution
• Removed damaged copper line set and installed a new insulated, code-compliant run.
• Brazed joints under nitrogen purge, verified 350 psi hold, vacuumed to 500 microns under, and recharged with R-410A.
• With correct superheat/subcooling—system now delivers cool, balanced airflow.
🌟 Value Delivered
✓ Deep diagnostic cost only a few hundred dollars vs. trial-and-error part swaps.
✓ Transparent explanation built homeowner trust.
✓ New line set extends HVAC life.
📞 Need honest HVAC help? Greentech Engineering Heating & Air Conditioning keeps Southlake & the greater DFW area comfortable with expert diagnostics and fair pricing.
(469) 551-6806 | greentechdfw.com
