






🚀 Detect leaks like a pro—fast, precise, unstoppable.
The Mastercool 55900 Refrigerant Leak Detector features a heated tin oxide sensor that detects all common refrigerants with exceptional sensitivity down to 0.15 oz/year. Certified to SAE J2791, J2913, and EN 14624 standards, it offers a 15.5-inch flexible probe with an intelligent tip to reduce false alarms and reach tight spaces. Equipped with multi-level LED indicators, peak hold function, and a user-friendly interface, it comes complete with essential accessories and backed by U.S.-based customer support, making it the go-to tool for HVAC and automotive professionals demanding accuracy and reliability.






| ASIN | B00RVZ6WXQ |
| Alarm | Visual |
| Best Sellers Rank | 1,016,441 in Automotive ( See Top 100 in Automotive ) 71,227 in Car Tools & Equipment |
| Brand | Mastercool |
| Colour | Blue |
| Customer Reviews | 3.9 out of 5 stars 49 Reviews |
| Global Trade Identification Number | 00700376559002 |
| Included Components | leak detector, molded case, 2C batteries, test vial replacement filters |
| Item Dimensions D x W x H | 76.2D x 20.3W x 15.2H centimetres |
| Item Type Name | Refrigerant leak detector |
| Item Weight | 1 Pounds |
| Item weight | 1 Pounds |
| Manufacturer | Mastercool |
| Manufacturer Warranty Description | 1 year. |
| Model Number | 55900 |
| Power source | Battery Powered |
| Product Style | Intellasense II – Heated Tin Oxide Sensor |
| Product dimensions | 76.2D x 20.3W x 15.2H centimetres |
| Style | Intellasense II – Heated Tin Oxide Sensor |
| UPC | 700376559002 |
| Unit Count | 1.0 count |
P**E
Five Stars
Like the equipment and is very sensitive.
Trustpilot
3 weeks ago
1 week ago