--- product_id: 112458852 title: "55900 Refrigerant Leak Detector, Blue" brand: "mastercool" price: "AED 1222" currency: AED in_stock: true reviews_count: 6 category: "Mastercool" url: https://www.desertcart.ae/products/112458852-55900-refrigerant-leak-detector-blue store_origin: AE region: United Arab Emirates --- # Certified to SAE J2791, J2913 & EN 14624 standards Heated tin oxide sensor for ultra-fast detection 15.5” flexible probe with intelligent tip 55900 Refrigerant Leak Detector, Blue **Brand:** mastercool **Price:** AED 1222 **Availability:** ✅ In Stock ## Summary > ❄️ Stay cool, catch leaks first — because your AC deserves the best! ## Quick Answers - **What is this?** 55900 Refrigerant Leak Detector, Blue by mastercool - **How much does it cost?** AED 1222 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ae](https://www.desertcart.ae/products/112458852-55900-refrigerant-leak-detector-blue) ## Best For - mastercool enthusiasts ## Why This Product - Trusted mastercool brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Flex Your Reach:** 15.5-inch flexible probe navigates tight, hidden spaces effortlessly for thorough inspections - • **Smart Sensor Tech:** Heated tin oxide sensor with environment-sensing tip minimizes false alarms and maximizes accuracy - • **Certified Confidence:** Meets rigorous SAE and EN standards, ensuring professional-grade reliability every time - • **All-Inclusive Pro Kit:** Comes with leak test vial, replacement filters, batteries, and rugged blow molded case for on-the-go readiness - • **Pinpoint Precision, Zero Guesswork:** Detects leaks as small as 0.15 oz/year with lightning-fast response under 1 second ## Overview The Mastercool 55900 Refrigerant Leak Detector features a cutting-edge heated tin oxide sensor and a 15.5-inch flexible probe with an intelligent tip, enabling ultra-sensitive detection of refrigerant leaks down to 0.15 oz/year. Certified to SAE J2791, J2913, and EN 14624 standards, it offers fast response times under 1 second, multi-level LED diagnostics, and a user-friendly interface. Packaged with essential accessories and backed by U.S.-based support, this professional-grade tool is engineered for HVAC and automotive pros who demand precision and reliability. ## Description Overview The Mastercool 55900 Intellasense II is a compact, professional-grade leak detector designed to deliver reliable performance in real-world HVAC and automotive environments. Using an advanced heated tin oxide sensor, it detects refrigerant leaks down to 0.15 oz/year with exceptional speed and precision. Designed for R134a, R1234yf, and all common refrigerants, this tool is fully certified to SAE J2791, J2913, and EN 14624 standards. Key Features ✔️ ADVANCED SENSOR TECHNOLOGY – Heated tin oxide sensor detects refrigerants with high accuracy ✔️ PEAK FUNCTION – Highlights the highest leak detected for multi-leak environments ✔️ INTELLIGENT TIP DESIGN – Reduces false alarms by sensing and adjusting to the environment ✔️ MULTI-COLOR LED INDICATORS – Visual signal strength and diagnostic feedback in real-time ✔️ FLEXIBLE PROBE – 15.5" gooseneck reaches tight or hidden leak zones with ease ✔️ INTERTEK CERTIFIED – Complies with J2791 (R134a), J2913 (R1234yf), and EN 14624 standards Why Mastercool With over 35 years of innovation in A/C service equipment, Mastercool builds tools trusted by technicians worldwide. The 55900 combines accuracy, durability, and ease of use—offering dependable performance for serious leak detection needs. Technical Specifications - Sensor Type: Heated tin oxide - Sensor Life: 2000 hours - Sensitivity: High (0.15 oz/yr), Medium (0.25 oz/yr), Low (0.50 oz/yr) - Response Time: Less than 1 second - Probe: 15.5" flexible probe with intelligent tip - Display: 6-level LED indicator with diagnostics - Battery: 2 "C" alkaline batteries - Battery Life: 30 hours - Certifications: SAE J2791, J2913, EN 14624 - Includes: Detector, leak test vial, filters, 2 “C” batteries, blow molded case Review: Five Stars - Like the equipment and is very sensitive. Review: This little guy solved a very frustrating issue I was having with my '07 C6 Corvette. For 3 years straight I would have to deal with a VERY slow refrigerant leak that would leave me with no AC each Spring when I would fire it up the first time after the long winter indoors. I changed so many parts and added dye, of course, but still no joy. I finally broke down and bought this tool when a local shop scared me with a big fat bid for digging into the issue. It turned out that there was a pin-hole in the condenser that could not be viewed by line of site with or without little mirrors and an IR light. I slipped this sneaky little sniffer-wand up in there and it started beeping like crazy. Bam! I installed the new condenser the next day and it has been hold perfectly with ice cold air at 45 degrees. My corvette is now colder than my wife... but in a good way :) I recommend this tool to anyone who wants to get to the leak quickly. It will pay for itself the first time you use it and if your friend's AC has an issue you might get to be someone's hero. Giddy-up. ## Features - ✔️ HEATED TIN OXIDE SENSOR – Detects all refrigerants (CFCs, HCFCs, HFCs, and blends) with high sensitivity and fast response time - ✔️ CERTIFIED PERFORMANCE – Complies with SAE J2791 (R134a), J2913 (R1234yf), and EN 14624 standards - ✔️ SUPER SENSITIVE MODE – Enables enhanced detection of small leaks, including R1234yf and R407C - ✔️ INTELLIGENT PROBE DESIGN – 15.5” flexible probe with environment-sensing tip minimizes false alarms - ✔️ PEAK HOLD FUNCTION – Locks the highest leak signal while continuing to scan for additional leaks - ✔️ USER-FRIENDLY INTERFACE – Volume/mute control, three sensitivity levels, and LED indicators for signal strength, sensor status, and diagnostics - ✔️ INCLUDES ACCESSORIES – Comes in a blow molded case with leak test vial, replacement filters, and 2 “C” batteries - ✔️ U.S. BASED CUSTOMER SUPPORT – Reliable service from Mastercool’s New Jersey headquarters ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00RVZ6WXQ | | Alarm | Visual | | Brand | Mastercool | | Colour | Blue | | Customer Reviews | 4.0 4.0 out of 5 stars (49) | | 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 | | Manufacturer | Mastercool | | Manufacturer Warranty Description | 1 year. | | Model Number | 55900 | | Number of Items | 1 | | Part Number | 55900 | | Power source | Battery Powered | | Product Style | Intellasense II – Heated Tin Oxide Sensor | | UPC | 700376559002 | | Unit Count | 1.0 count | ## Product Details - **Alarm:** Visual - **Brand:** Mastercool - **Colour:** Blue - **Global Trade Identification Number:** 00700376559002 - **Item weight:** 1 Pounds - **Number of items:** 1 - **Power source:** Battery Powered - **Product dimensions:** 76.2D x 20.3W x 15.2H centimetres - **Style:** Intellasense II – Heated Tin Oxide Sensor - **Unit count:** 1.0 count ## Images ![55900 Refrigerant Leak Detector, Blue - Image 1](https://m.media-amazon.com/images/I/51LbVxWwkeL.jpg) ![55900 Refrigerant Leak Detector, Blue - Image 2](https://m.media-amazon.com/images/I/81LD108VG9L.jpg) ![55900 Refrigerant Leak Detector, Blue - Image 3](https://m.media-amazon.com/images/I/81YR+vbpPzL.jpg) ![55900 Refrigerant Leak Detector, Blue - Image 4](https://m.media-amazon.com/images/I/71fWLwPIjlL.jpg) ![55900 Refrigerant Leak Detector, Blue - Image 5](https://m.media-amazon.com/images/I/81mzbLXK4vL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Five Stars *by P***E on 9 November 2017* Like the equipment and is very sensitive. ### ⭐⭐⭐⭐⭐ Review *by P***R on 13 November 2025* This little guy solved a very frustrating issue I was having with my '07 C6 Corvette. For 3 years straight I would have to deal with a VERY slow refrigerant leak that would leave me with no AC each Spring when I would fire it up the first time after the long winter indoors. I changed so many parts and added dye, of course, but still no joy. I finally broke down and bought this tool when a local shop scared me with a big fat bid for digging into the issue. It turned out that there was a pin-hole in the condenser that could not be viewed by line of site with or without little mirrors and an IR light. I slipped this sneaky little sniffer-wand up in there and it started beeping like crazy. Bam! I installed the new condenser the next day and it has been hold perfectly with ice cold air at 45 degrees. My corvette is now colder than my wife... but in a good way :) I recommend this tool to anyone who wants to get to the leak quickly. It will pay for itself the first time you use it and if your friend's AC has an issue you might get to be someone's hero. Giddy-up. ### ⭐⭐⭐ Review *by A***R on 15 August 2025* solid tool 3 stars for now have to use it more to make sure the quality is there will update ## Frequently Bought Together - Mastercool Refrigerant Leak Detector with Metal Oxide Gas Sensor, IntellaSense II, 55900, Blue - Mastercool 53123-YF Refillable R1234yf Oil/Dye Injector --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ae/products/112458852-55900-refrigerant-leak-detector-blue](https://www.desertcart.ae/products/112458852-55900-refrigerant-leak-detector-blue) --- *Product available on Desertcart United Arab Emirates* *Store origin: AE* *Last updated: 2026-06-19*