Refrigerant Leak Detection Equipment for HVAC & Refrigeration

Electronic leak detectors, UV dye kits, leak detection sprays, and nitrogen testing equipment for air conditioning and refrigeration systems. Mastercool and Spectroline in stock, covering all common refrigerants including R410A, R32, R22, R134a, R1234yf, and CO2. Same-day dispatch from UK stock.

Electronic Leak Detectors

The fastest method for locating refrigerant leaks on site. The Mastercool Black Series Infrared Leak Detector provides highly sensitive detection across all common refrigerants with minimal false alarms. The Mastercool IntellaSense II covers R134a and R1234yf for automotive and next-generation AC systems. The Mastercool CO2 Infrared Leak Detector is a specialist tool for R744 commercial refrigeration systems. Electronic detectors are the trade standard for routine service and commissioning checks.

UV Dye Kits & Fluorescent Detection

UV dye kits provide visual confirmation of leak location — particularly effective for identifying multiple leaks simultaneously and verifying repairs in complex or hard-to-reach systems. Mastercool rechargeable UV leak locator kits in 110V and 220V versions. R1234yf-compatible UV dye injectors for next-generation refrigerant systems. Spectroline Glo-Stick UV fluorescent dye capsules for field injection.

Leak Detection Sprays & Fluids

Bubble-forming leak detection sprays for quick visual checks on joints, flare connections, and service valves. Suitable for use on pressurised systems during nitrogen pressure testing and after refrigerant charging. Non-corrosive formulations safe for use on copper, brass, and aluminium refrigerant components.

Nitrogen Pressure Testing

The Mastercool 53042-YF R1234yf Nitrogen Leak Testing Adapter with 80mm gauge for pressure testing next-generation systems. Nitrogen pressure testing is carried out on all new installations before evacuation and refrigerant charging — confirming system integrity at all joints, fittings, and connections. Nitrogen regulators and hose sets are stocked under Refrigeration Accessories.

When to Use Each Method

Electronic detectors suit fast scanning during routine service and commissioning. UV dye is best for identifying multiple leaks and verifying repairs. Leak spray provides a quick visual check on specific joints. Nitrogen pressure testing is mandatory on all new installations before evacuation. Use vacuum pumps and manifold gauges alongside leak detection for a complete commissioning workflow.

Trade accounts available — call 0161 775 1190 for volume pricing on leak detection equipment.

Leak Detection Guides for HVAC Engineers

• Nitrogen Pressure Testing for HVAC Systems — OFN test pressures, standing test procedure, and leak location
• F-Gas Compliance Checklist for AC Engineers — mandatory leak check schedules and record keeping
• VRF/VRV System Commissioning Guide — post-charge leak check requirements for multi-unit systems
• Common HVAC Commissioning Mistakes — leak detection and pressure testing errors to avoid