Leak Testing an HVAC Line Set: Nitrogen and Soap Methods

Introduction The pressure gauge read zero. At 4:15 p.m. on a Friday, the rooftop air conditioning line set feeding a pre charged line set busy dental clinic quit moving refrigerant altogether. The tech on site found a tell-tale oil stain beneath pre charged line set size options the insulation near a 90-degree bend—classic result of thin-wall copper and sun-baked foam