Air Conditioners

About These Items These single- or two-stage vacuum pumps are designed for professional and home applications in refrigeration, air conditioning, automotive, and resin processing. With power ratings from 1/5 HP to 1/2 HP, they offer free air displacements of 3.5 to 5 CFM and vacuum levels as low as 25 microns (2.5 Pa). Models include anti-reflux systems, thermal protection, heat sinks, and built-in fans for consistent performance, even during long shifts. Each model comes with a complete tool kit, which may include high-precision pressure gauges, high-PSI connection hoses, R410A and R134a adapters, oil, and even 2- or 5-gallon stainless steel vacuum chambers, ideal for wood stabilization, resin degassing, and oil extraction. The pumps are constructed of aluminum alloy and feature pure copper motors, making them sturdy, durable, and easy to transport thanks to their ergonomic handles. They are compatible with refrigerants such as R32, R410A, R134a, and R1234yf, covering a wide range of HVAC applications and beyond. Key Differences The TW-1.5K (R32) model stands out for its refrigeration versatility, with 4 CFM, rubber-wrapped gauges, a three-color hose, adapters, and a carrying bag, ideal for mobile technicians. The VP245 is a 5 CFM, 1/2 HP pump with two oil bottles, increased performance, and a maximum vacuum of 25 microns, perfect for demanding HVAC or laboratory applications. The ZK44.8CFM model, with 4.8 CFM, includes four high-pressure rubber hoses, dual gauges, and a carrying case, ideal for home and automotive refrigeration. For those who need to handle resins, epoxies, and silicone, the chambered models are ideal. The 2-gallon chamber model offers a compact solution, while the TW-1K with a 5-gallon chamber provides greater capacity and specialized accessories such as a silicone pad, vacuum gauge, and air filters. Both are focused on laboratory and creative applications. Specifications TW-1.5K (R32) Displacement: 4 CFM Maximum Vacuum: 40 microns Power: 180 W / 1/4 HP Connections: 1/4" SAE and 1/2" ACME Voltage: 120 V / 60 Hz Oil Capacity: 200 ml Weight: 8 kg VP245 Displacement: 5 CFM (142 L/min) Maximum Vacuum: 25 microns / 2.5 Pa Power: 375 W / 1/2 HP Connections: 1/4" SAE, 3/8" SAE, 1/2" ACME Voltage: 115 V / 60 Hz Oil Capacity: 330 ml Weight: 9.3 kg ZK44.8CFM Displacement: 4.8 CFM Maximum Vacuum: 5 Pa Power: 1/3 HP Voltage: 110 V / 60 Hz Connections: 1/4" and 3/8" Oil Capacity: 250 ml Speed: 1440 RPM Pump with 2-Gallon Chamber Displacement: 4 CFM Maximum Vacuum: 5 Pa Power: 1/3 HP Voltage: 110 V / 60 Hz Chamber: 2-Gallon Stainless Steel Oil Capacity: 200 ml TW-1K (with 5-Gallon Chamber) Displacement: 3.5 CFM Maximum Vacuum: 40 microns Power: 150 W / 1/5 HP Connection: 1/4" SAE Voltage: 120 V / 60 Hz Chamber: 5-Gallon Stainless Steel gallons Oil Capacity: 250 ml Weight: 11.54 kg Package Contents TW-1.5K (R32) 1 x Vacuum Pump 1 x Manifold Gauge Set 3 Colored Hoses 2 x R410A Adapters 1 x R134a Quick Coupler 1 x Bottle Opener 1 x Carrying Bag 1 x 250 ml Oil Bottle 1 x Manual VP245 1 x Vacuum Pump 1 x 330 ml Oil Bottle 1 x 230 ml Oil Bottle 1 x Manual ZK44.8CFM 1 x Vacuum Pump 4 x Rubber Hoses 2 x Manifold Gauges 1 x Carrying Case 2 Gallon Chamber Kit 1 x Vacuum Pump 1 x 2 Gallon Vacuum Chamber TW-1K (5 gal) 1 x Vacuum Pump 1 x 5 gal Vacuum Chamber 1 x Glass Lid Tempered 1 x Vacuum Gauge 1 x Connection Hose (1.5 m) 1 x Silicone Pad 1 x Oil Bottle (250 ml) 1 x Valve and Connector Set 1 x Air Filter 1 x User Manual