OMT 4 CFM AC Vacuum Pump and Gauge Set for R454B R1234yf

The OrionMotorTech 4 CFM AC Vacuum Pump Kit is a comprehensive service package designed for maintaining both automotive and indoor cooling systems. It provides DIY mechanics and HVAC technicians with the tools necessary to evacuate lines and check for leaks, accommodating modern refrigerants including R454B, R1234yf, R32, and R410a.

At the center of the setup is a 1/3 horsepower vacuum pump powered by an all-copper motor that produces 4 CFM of airflow. For safety when working around mildly flammable A2L refrigerants, the pump features an ignition-proof switch to maintain sparkless operation. Heat management is handled by a built-in cooling fan, along with an automatic safety feature that turns the motor off if it reaches 266°F, restarting only after it cools down.

Day-to-day maintenance is straightforward thanks to several practical features. A clear sight glass allows you to check oil clarity and levels at a glance, while the bottom drain valve makes fluid changes quick. OrionMotorTech includes 0.26 quarts of vacuum oil in the box, alongside a 3-way manifold gauge, three hoses, a leak detector, an R1234yf can tap, quick couplers, and adapters for R454B and R410A systems.

As for trade-offs, the thermal protection mechanism will halt work entirely if the unit reaches 266°F until the pump drops back to a safe operating temperature. Additionally, the included 0.26 quart oil supply is tailored for initial setup, so frequent operators will eventually need to source extra fluid for ongoing maintenance.

Verdict: This all-in-one set is an excellent choice for anyone servicing newer automotive and residential air conditioning systems that use A2L refrigerants. With its ignition-proof design, included gauges, and full assortment of adapters, it delivers everything required for standard AC evacuation in one organized package.

• Motor Power: 1/3 hp
• Motor Material: All-copper
• Airflow: 4 CFM
• Thermal Shutoff: 266°F
• Included Oil Volume: 0.26 qt
• Refrigerant Compatibility: R454B, R1234yf, R32, R410a

A great fit if you:

• Service vehicles using newer R1234yf or R454B refrigerants and need a sparkless pump.
• Want a complete starter package containing gauges, hoses, adapters, and a leak detector.
• Work on both indoor residential and automotive HVAC units.
• Value built-in thermal protection to prevent motor damage.

Consider something else if you:

• Require a pump that runs continuously in high heat without thermal pauses.
• Already own manifold gauges and only need a bare vacuum pump.

Which refrigerants can this vacuum pump kit handle?
The kit is compatible with several common refrigerants, including R454B, R1234yf, R32, and R410a.

What happens if the vacuum pump overheats?
The built-in overheat protection automatically shuts the motor off if it reaches 266°F, then restarts it once the unit has cooled down.

What accessories come in the package?
The kit includes the 1/3hp pump, a 3-way manifold gauge, three hoses, a leak detector, an R1234yf can tap, quick couplers, adapters for R454B and R410A, 0.26 quarts of oil, and a storage case and bag.