Ingersoll Rand UP6 5-15C Series vs. R4-11 Series: Choosing the Right Rotary Screw Air Compressor

The Ingersoll Rand UP6 5-15C series and R4-11i series are very common rotary screw air compressors from Ingersoll Rand. Please use this guide to help determine which series is best for your facility. Have additional questions? Please give us a call.

Selecting the right rotary screw air compressor is one of the most important equipment decisions for any facility. Whether you're a manufacturer, a mechanic, or part of a processing plant, the efficiency and reliability of your compressed air system has a direct impact on your uptime, production costs, and overall operational flow. Ingersoll Rand is known for delivering dependable compressor systems, and their UP6 and R-Series lines are two of the most trusted options in the 5 to 15 horsepower range.

Despite both falling into a similar power class, the UP6 and R-Series serve different needs. The UP6 line is a favorite among small-to-mid sized operations looking for simplicity, solid performance, and ease of maintenance — all at a competitive price point. It’s built to offer reliable compressed air with minimal fuss and service-friendly design.

On the other hand, the R-Series (R4–R11) is designed with industrial users in mind who demand more from their system: more flow, more control, and more diagnostic visibility. With advanced features like the XE-50 controller, higher pressure capabilities, and improved CFM-per-HP output, the R-Series is built for environments where precision, data insight, and performance edge matter.

Whether you're replacing an aging unit or scaling up your operation, this comparison will help you weigh the benefits of each series and choose the one that best fits your workflow, budget, and long-term goals.

Feature Comparison

UP6 Series Overview (UP6 5-15C)

The UP6-5 through UP6-15 are built for dependable performance at a more competitive price point. These compressors are ideal for facilities that require strong CFM performance, straightforward maintenance, and compact installation options.

• HP Range: 5 – 15 HP
• Max PSI: 150
• CFM Range: 18.5 – 55
• Mounting Options: Baseplate or Mounted on an 80 or 120-gallon tank
• Drive Type: Belt-driven
• Control Panel: Basic electro-pneumatic
• Ease of Service: Designed with accessibility in mind for quick routine maintenance

R-Series Overview (R4-11)

The R-Series is a more robust industrial platform, designed with improved energy efficiency and better air delivery per horsepower. It’s a fit for operations demanding higher uptime, advanced controls, and future-ready monitoring.

• HP Range: 5 – 15 HP
• Max PSI: Up to 200psi depending on model
• CFM Range: 17-56.1
• Mounting Options: Baseplate or mounted on an 80 or 120-gallon tank
• Drive Type: Belt-driven
• Cooling: Air cooled with dedicated cooling fan
• Control Panel: XE-50 microprocessor controller
• Ease of Service: Designed with accessibility in mind for quick routine maintenance. Some other components require a bit more time to change out (thermal valve and MPCV)

Spotlight: XE-50 Controller on the R-Series

One of the R-Series’ biggest differentiators is the integrated XE-50M controller. This unit transforms how users interact with the compressor, offering advanced diagnostics, status monitoring, and maintenance alerts — all through a user-friendly display.

XE-50 Controller Features:

• 2.1” Monochrome LCD Display with tabbed folders for easy navigation
• Real-time system diagnostics and maintenance alerts
• Push-button controls: Start, Stop, Reset, Enter
• Multiple screen views: Access to compressor performance data, alarms, service intervals, and more
• Designed for operators who want more visibility into system health and runtime
• This controller can help reduce downtime, extend equipment life, and ensure proactive maintenance planning.

Specification Comparison Chart

Final Thoughts

Both rotary screw air compressors are excellent performers, but your choice will come down to what matters most to your operation:

• If you need solid performance at a great price, the UP6 is your go-to.
• If you're looking for better flow efficiency, future-ready controls, and deeper system insight, the R-Series stands out.

Need help choosing the right air compressor for your application? Contact us via phone or email and we would be happy to assist.