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EM SERIES MEASURE CRITICAL HVACR PARAMETERS TO MAXIMIZE PRODUCTIVITY AND PERFORMANCE Measuring, analysing and solving environmental problems is par...

EM SERIES MEASURE CRITICAL HVACR PARAMETERS TO MAXIMIZE PRODUCTIVITY AND PERFORMANCE Measuring, analyzing and solving environmental problems is par...

LUBRICATING OIL ZOOM SPOUT MO98 • All purpose lubricating oil • Flexible spout extends and retracts to any in-between length • Viscosity: 92-99 at ...

TIMER DELAYS TD69 & TD73 • 1/4" male quick connect terminals • Adjustable time delay on make 6 seconds to 8 minutes (TD69) • Adjustable time de...

UNIVERSAL POWER START RELAY URSC20 • No additional wires required • Prevents low voltage starting problems • Provides a boost for hard start & ...

UNIVERSAL POTENTIAL RELAY SUPR • Electronic potential relay (EPR) technology • Instant restart • Motor power rating up to 5 hp • Normally closed 30...

SPP SUPER BOOST SERIES A.C. HARD STARTS SPP5 & SPP6 • Reliable • Field proven • UL recognized PTC style hard start kits • Economic • Easy 2-wir...

RELAY OVERLOAD COMBO RO22, RO42, RO62, RO82 • Can be used with & without start capacitor motors • Locked rotor protection eliminates start wind...

SOLID STATE RELAY ICG220 (220V RELAY) • Can be used with & without start capacitor • Fastest cool down time of any solid state relays • ICG ser...

THERMOSTAT GUARDS BTG-K • Clear plastic thermostat guard • Hi-impact plastic • Mounting hardware • Vertical or horizontal mounting BTG-RK • Clear p...

BULLET PIERCING VALVES BPV21 & BPV31 • 500 PSI Maximum pressure • Corrosion resistant • Hex key wrench included • Non-positional mounting, no a...

The NEW Mastercool’s high-precision charging scale is specifically designed to measure small cans of refrigerant accurately for charging systems th...

DIGITAL VACCUM GAUGES • Response Time: 250 mSec • Operating Temperature: 32 to 120ºF (0 to 45ºC) • Connection Fitting: 1/4” flare female adapter • ...

4-WAY MANIFOLD • Full 3/8 bore through the block increases flow considerably, faster charging and recovery • Ball valve rotates 90º between two Tef...

REPLACEMENT BLACK HOSE SAE • (GRADE 5 HOSE) with a selection of Standard and Nylon Barrier for high pressure applications • Knurled brass nuts make...

Manifolds & Gauges is the pinnacle of professional quality. Crafted with unparalleled precision and using only the finest materials, our collec...

Introducing the 91553-EE Set, the pinnacle of protection for your 3 1/8" gauges. With a blend of design and functionality, our gauge protectors ens...

CLEANING AIRCON FLUSH SOLVENT Effectively removes debris and sludge from A/C components Solvent-based Leaves no residue O-Ring safe Non-Flammable ...

FLUSH AIRCON SYSTEM FLUSH KIT • Includes flush gun, hose, canister and canister adapter • Designed to work with any lightweight flushing agent whic...

STRAIGHT ADAPTERS • Convert 1/4 to 5/16 SAE (1/2-20 UNF) swivel female nut with depressor

Experience superior control and safety with Mastercool's meticulously designed Control Valves. Crafted for optimum functionality, these valves are ...

A good quality vacuum pump is an integral tool for complete A/C service. Mastercool vacuum pumps are durable and time tested. They stand up to the ...

PENCIL REAMER • Designed to remove inner burrs easily• Full metal grip• Includes one spare tungsten blade for long use Looking for high-quality HVA...

FLARE EXPAND KIT • (7 HEAD KIT) Complete Hydraulic Flaring and Expanding Kit • Consists of Expander Heads 3/8, 1/2, 5/8, 3/4, 7/8, 1 and 1 1/8” • H...