Robinair 15500 VacuMaster Economy Vacuum Pump – 2-Stage, 5 CFM, 35 Micron, 115V

Overview

The Robinair 15500 VacuMaster Economy Vacuum Pump is built for reliable HVAC-R service. With a robust 2-stage rotary vane design, it delivers steady vacuum performance, fast evacuation, and dependable moisture removal on air conditioning and refrigeration systems. The 1/3 HP, 115V/60 Hz motor is thermally protected for steady operation, while the unit’s 7.5 ounce oil reservoir supports extended work sessions. Its compact aluminum housing, finned for heat dissipation, helps keep the pump cooler and ready for the next job.

Key design and reliability features

• Two-stage rotary vane design provides strong vacuum capability with quiet operation and moisture removal.
• Wide compatibility supports various refrigerants and oils used in HVAC-R service.
• Internal filtration intake screen and exhaust filter protect the pumping chamber from debris and oil vapor.
• Ergonomic handling with a no-hassle, cool-to-the-touch grip for easy transport.
• Compact and lightweight aluminum housing keeps weight low for transport to jobsites.
• Solid performance specs 5 CFM free air displacement and a factory rating to 35 microns; 1/2 HP equivalent motor rating.
• Convenient hardware includes 1/4" MFL and 3/8" ACME inlet fittings, adapter, sight glass, oil fill port, and a bottom oil drain valve for quick changes.
• Exhaust management exhaust is directed through the handle to keep the technician's work area clear.

On-the-job practicality

Designed specifically for A/C and refrigeration service, the VacuMaster 15500 balances power with portability. The finned surfaces accelerate heat dissipation, helping to maintain consistent performance during longer evacuations. With oil included at setup and a clearly visible oil sight glass, operators can monitor levels and perform fast, clean oil changes when needed.

Maintenance and care

• Oil recommendations Robinair notes that optimal results come from Premium High Vacuum Pump Oil, available separately in multiple container sizes.
• Oil changes are advised after each use to sustain performance and service life.
• Included and ready oil is supplied with the pump, supporting immediate operation out of the box.

Whether you’re refreshing a stubborn vacuum on a rooftop unit or evacuating a packaged system in a shop bay, the Robinair 15500 VacuMaster Economy Vacuum Pump aims to offer consistent performance, practical maintenance, and a design that’s mindful of field conditions. Robinair, part of the Bosch Automotive Service Solutions family, is recognized for tools that support HVAC-R professionals across residential and commercial work, as well as related industries.