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Castair

The Castair I71CUC2-S is a heavy-duty industrial series air compressor, designed by Castair, a family-owned Minnesota company since 1991, for superior performance in medium to large shop environments, including HVAC service trucks and mobile applications requiring reliable, high-pressure compressed air. Powered by a robust 7.5 HP, single-phase, 208-230V Baldor motor, this compressor delivers 24.8 CFM at 175 PSI, operating at a slow 585 RPM for quiet performance and extended durability. Its two-stage, full cast iron, oil-lubricated pump ensures long-lasting reliability, making it ideal for heavy-duty industrial air compressor tasks in HVAC installation, automotive repair, manufacturing, and mobile service operations. The 80-gallon vertical ASME-certified, powder-coated tank provides substantial air storage and is built for safety and corrosion resistance, perfect for powering high-demand pneumatic tools used in HVAC service, such as impact wrenches, refrigerant recovery systems, and pneumatic drills. Equipped with advanced intake noise silencers, including automotive-type filter/silencers with paper elements, the I71CUC2-S significantly reduces operational noise, ensuring a quieter workspace in service trucks or job sites while maintaining clean air intake for optimal efficiency. The V-twin cylinder design promotes 360-degree cooling for enhanced performance and longevity, supported by precision steel connecting rods, automotive-type rod insert bearings at the crankshaft, and needle bearings at the wrist pin for superior reliability. Key features include tapered roller bearings at both ends of the crankshaft for reduced friction, stainless disc and spring valves offering up to 10 times the lifespan of competitor reed valves for easy maintenance, and pistons with four rings for higher efficiency and minimal oil carry-over. The slow RPM and larger bore/stroke design result in cooler, quieter operation, extending pump life in rugged environments. Rigid metal belt guards, copper discharge, and unloader tubes improve durability and heat dissipation, while an easy-to-read oil sight glass simplifies maintenance. A centrifugal unloader ensures load-less startups, and four feet provide stability on service truck beds or shop floors. Measuring approximately 33" L x 24" W x 72" H and weighing around 595 lbs, the I71CUC2-S is designed for stationary or mobile industrial use, with mounted starters for easy operation. All Castair compressors are built to order, allowing customization for specific needs. For inquiries or to tailor features, contact Castair at 8894 47th St. NE, Spicer, MN 56288, or call 866-217-0063 to explore options for this ASME-certified industrial air compressor with noise reduction. heavy-duty industrial air compressor 7.5 HP Baldor, Castair I71CUC2-S 80-gallon vertical tank compressor, two-stage air compressor with intake noise silencer Minnesota, ASME-certified air compressor for HVAC service trucks, quiet operation industrial compressor 24.8 CFM 175 PSI, Baldor motor air compressor for HVAC installation, durable cast iron pump compressor for refrigerant recovery, Minnesota-manufactured air compressor for mobile automotive repair, high-performance two-stage compressor for pneumatic HVAC tools, industrial air compressor for manufacturing and service truck applications.

  • Cheaper than replacing an entire unit if the tank is still in working order
  • Castair or Brand X, this will easily mount on any existing tank with just a few quick bolts/holes and connections
  • Cube packages include mounted and wired magnetic motor starter. Standard pump outlet with 3/4″ NPT female threads for discharge connection
  • Easy to mount in service vans/trucks
  • Minimal floor space
  • Easy to service pump
  • Rigid steel frame construction
  • Self-tensioning electric motor base  
HP  Phase  Pump  R.P.M.  CFM @  0-PSI  CFM@  175 PSI  LxWxH  Dimension  Wt.  Lbs.  Unit Model 
5  1  767  22.0 17.5  27x22x41  405  I51CUC1-S 
5  1  420  22.0  17.5  31x24x41  505  I51CUC2-S 
7.5  1  895  32.4  24.8  27x24x41  440  I71CUC1-S 
7.5  1  585  35.0  28.1  31x24x41  540  I71CUC2-S 
10  1  758  45.0  35  31x24x41  570  I101CUC2-S 
5  3  767  22.0  17.5  27x22x41  405  I53CUC1-S 
5  3  420  22.0  17.5  31x24x41  505  I53CUC2-S 
7.5  3  895  32.4  24.8  27x22x41  440  I73CUC1-S 
7.5  3  585  35.0  28.1  31x24x41  540  I73CUC2-S 
10  3  758  45.0  35.0  31x24x41  570  I103CUC2-S 

Installation Items You May Need 

Vibration pads
Remote tanks
Check valves
JIC to NPT straights and elbows for pump discharge  
Rigid copper or stainless-steel flex lines available for pump discharge tube to tank
Pressure switch (required for operation)