ComStar Leak Bubbles Yellow - 1 Quart Gas Leak Detector Spray for Micro Leaks

The Professional Standard for Leak Detection

Meet ComStar Leak Bubbles Yellow, a ready-to-use 1-quart spray designed to reveal even the tiniest leaks with vivid yellow bubbles. This professional-grade solution helps HVAC technicians, DIY enthusiasts, and homeowners locate the precise source of leaks in gas and air systems. The visual feedback makes it easier to assess the situation and plan your next steps without guesswork.

Crafted for reliability, the formula stays liquid in a wide range of temperatures, so you can test outdoor propane tanks or indoor air handlers without worrying about premature evaporation or freezing. The bottle ships ready to use—no mixing, no dilution—so you can apply it directly to pipes, fittings, reels, or hoses and begin observing results right away.

Why Leak Bubbles Yellow Stands Out

• INSTANT VISUAL LEAK DETECTION: Yellow bubbles visibly mark the leak source, aiding quick pinpointing in HVAC, propane lines, and gas fittings.
• ALL-WEATHER & NON-FREEZING: Specially formulated to resist freezing, it performs reliably in cold environments and outdoor settings.
• MULTI-GAS COMPATIBILITY: Safely detects leaks in Natural Gas, Propane, Nitrogen, Air, CO2, and refrigeration gases.
• SAFE & NON-CORROSIVE FORMULA: Non-toxic and non-corrosive, designed to protect metal and plastic piping while testing.
• VERSATILE FIXTURE TESTING: Useful for HVAC/R systems, home gas lines, BBQ grills, outdoor faucets, and automotive tires.

Real-World Use Cases

Whether you’re verifying a home gas line, inspecting an HVAC coil circuit, or checking the propane setup on a BBQ grill, this spray provides visible feedback that you can act on. The high-viscosity solution clings to surfaces long enough for a reliable bubble formation, helping you identify leak paths in tight corners or along long sections of piping.

• HVAC/R: test evaporator coils, condenser lines, and refrigerant pathways for micro-leaks without disassembly.
• Home Safety: inspect natural gas or propane lines to stoves, heaters, and water heaters.
• Outdoor Living: check BBQ grills, fire pits, and RV propane connections before use.
• Automotive: locate leaks in tires and air suspension systems, especially around valve stems and seals.

Quality You Can Trust

Made in the USA and designed for professionals and informed homeowners, Leak Bubbles Yellow is ready to use straight from the box. Its non-diluting, non-corrosive formula supports a broad range of materials, including PVC/CPVC, copper, brass, and steel, enabling safer testing across equipment and installations. While it offers strong indications of leaks, always follow safety guidelines and use appropriate PPE as part of your testing routine.