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The RD300 is a heated diode refrigerant leak detector that pinpoints chlorofluorocarbon (CFC), hydrochlorofluorocarbon (HCFC), and hydrofluorocarbon (HFC) refrigerant leaks with three levels of sensitivity to leaks as small as 0.25 ounces per year (7 grams per year). 

The 20-V MAX Brushless High Torque Impact Wrenches are available in ½-inch (DCF899) hog ring or detent pin anvils; ¾-inch (DCF898) hog ring with retention pin hole anvil; or 7/16-inch (DCF897) quick-release chuck, specifically designed for utility applications. 

The PRO C-100 Combustion Analyzer is ideally suited for determining the percentage of oxygen that is expelled during combustion. 

We asked our contractor advisory panel to weigh in on their most useful and effective tools used in the field. Here’s what they had to say.

There’s no doubt the connectivity of mobile devices has made our personal lives more convenient, but now they’re also helping make technicians more efficient, thanks to tool manufacturers developing wireless-enabled devices and test and measurement apps for download.

While some contractors are willing to equip technicians with the necessary tools, others require workers to purchase their own, which can be yet another burden for someone just starting out in the field.

Flood Buzz™ Pro-02 is a water leak alarm that was created specifically for use in condensate pans. The alarm is designed to allow moisture to collect in the pan up to a depth of 1⁄8-inch. 

The BLACKMAX Manifold Series is designed for ruggedness and accuracy in a compact, high-strength, waterproof, nylon housing for the most demanding conditions. 

Viper Wet Rag is a reusable heat-blocking putty for protecting heat-sensitive components from damage during soldering, brazing, or welding. 

The DPI-8 hand-held 3-D scanner simplifies the process of collecting as-built data that is required to effectively manage building projects.