Collection: Castair

Castair Air Compressors: American-Made Power, Built to Last

If you're looking for an air compressor that doesn’t quit when the job gets tough, you're in the right place. Castair compressors are designed, engineered, and built in the U.S.A. with cast iron strength, oil-lubricated reliability, and performance that holds up year after year.

At Penry Air, we proudly carry the Castair lineup—tough, quiet-running machines trusted by contractors, mechanics, shop owners, and industrial operators across the country. Whether you're after a compact unit for your garage or a rotary screw system for high-demand operations, Castair has a solution that delivers.

Explore our full Castair collection and find the right system for your setup.

Why Castair?

Castair, Inc. has been family-owned and operated since 1991. And it shows in the details—slow-RPM pumps that last longer, real cast iron components (not just for show), and a strong commitment to quality over cutting corners.

What sets Castair apart?

• Slow RPM, Oil-Lubricated Pumps – Run quieter, last longer, and perform better under pressure.
  
  
• Cast Iron Construction – Built to withstand daily use in tough environments.
  
  
• Five Unique Series – Options for every user, from garage hobbyists to full-scale industrial facilities.
  
  
• Made in the USA – Engineered, assembled, and tested with pride.
  
  

When you buy a Castair unit, you’re not just getting a compressor—you’re investing in long-term performance with U.S.-based support.

Explore Castair’s Product Categories

Air Compressors (Contractor to Industrial)

No matter your setup, Castair has a compressor built for it. Their lineup covers five distinct series:

• Contractor Series – Compact and rugged, these are job-site ready with portable frames and plenty of power.
  
  
• Garage Series – Designed for home shops and personal use—quiet-running and reliable without overkill.
  
  
• Commercial Series – Mid-range units for shops, auto repair, and small businesses.
  
  
• Industrial Series – Heavy-duty machines for demanding environments and daily, extended operation.
  
  
• Rotary Screw Series – High-efficiency, continuous-duty systems for professional use where downtime is not an option.
  
  

These compressors come in both vertical and horizontal configurations, with tank sizes ranging from portable to powerhouse.

Major Components

Need to upgrade or replace a compressor pump, motor, or control system? Castair offers direct replacements and upgrades that match their OEM standards—no more guesswork or compatibility issues.

• Replacement Pumps (two-stage, cast iron)
  
  
• Electric Motors
  
  
• Flywheels, Belts, and Pulleys
  
  
• Unloaders and Pressure Switches
  
  

Air Drying Equipment

Moisture is the silent killer of air systems. Castair’s air dryers help you protect your tools and get cleaner, more consistent performance.

• Refrigerated Air Dryers
  
  
• Desiccant Dryers
  
  
• Moisture Separators
  
  
• Auto Drains & Manual Drain Kits
  
  

Perfect for shops running paint guns, CNCs, sanders, or any tool that hates wet air.

Accessories

Get the most out of your setup with Castair accessories:

• Air Filters
  
  
• Regulators & Gauges
  
  
• Vibration Isolators
  
  
• Mounting Brackets & Check Valves
  
  

These add-ons extend the life of your compressor and help tailor your system to your exact workflow.

Built for Builders, Pros & DIYers

Whether you're powering a lift in your shop, painting a car, or framing a house, Castair has a model that fits. Their machines are designed to perform under pressure and run cooler, quieter, and longer than the cheap stuff.

This collection is ideal for:

• Garage Owners & DIY Pros – Quiet, no-nonsense systems for weekend projects and hobby use.
  
  
• Contractors – Tough and portable units for job site demands.
  
  
• Auto Shops – Dependable performance for impact tools, lifts, and pneumatic equipment.
  
  
• Industrial Teams – Nonstop operation, large tanks, and rotary screw models for 24/7 performance.
  
  

Questions? We’ve Got You Covered.

With so many options, it’s easy to feel overwhelmed. That’s where we come in. At Penry Air, we don’t just stock the tools—we help you make sense of them.

Need to compare CFM ratings, figure out tank sizes, or confirm compatibility? Contact our team. We’ll break it down in plain English and help you get the best fit for your workflow.

Final Thoughts

If you’re tired of replacing cheap compressors or dealing with constant maintenance headaches, Castair is a breath of fresh air. Built tough, made local, and designed for long-term value—these machines are ready for whatever your workspace throws at them.