If you're like most shop air compressor owners, you need a reliable source of clean, dry air that you don't have to think about on a daily basis. You have enough to do without designing and installing a new compressed air system. That's why KAESER offers the AIRTOWER - a more affordable but rugged shop compressor for any light industrial application including woodworking, machine shops, metal fabrication, and all sorts of vehicle maintenance and repair. The AIRTOWER is a quality alternative to piston and light duty rotary screw compressors.

AIRTOWERS are completely assembled and their compact design saves you precious floor space. They arrive ready for installation, saving you a lot of time and expense.

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AIRTOWER 3C Model 3 Horsepower (hp) Nominal Motor Output Standard Version Rotary Screw Air Compressor
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AIRTOWER 4C Model 4 Horsepower (hp) Nominal Motor Output Standard Version Rotary Screw Air Compressor
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AIRTOWER 5C Model 5 Horsepower (hp) Nominal Motor Output Standard Version Rotary Screw Air Compressor
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AIRTOWER 7.5C Model 7.5 Horsepower (hp) Nominal Motor Output Standard Version Rotary Screw Air Compressor

AIRTOWER 7.5C Model 7.5 Horsepower (hp) Nominal Motor Output Standard Version Rotary Screw Air Compressor
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Description N/A If you're like most shop air compressor owners, you need a reliable source of clean, dry air that you don't have to think about on a daily basis. You have enough to do without designing and installing a new compressed air system. That's why KAESER offers the AIRTOWER - a more affordable but rugged shop compressor for any light industrial application including woodworking, machine shops, metal fabrication, and all sorts of vehicle maintenance and repair. The AIRTOWER is a quality alternative to piston and light duty rotary screw compressors.

AIRTOWERS are completely assembled and their compact design saves you precious floor space. They arrive ready for installation, saving you a lot of time and expense.
Brands N/A Kaeser Compressors
Model N/A Airtower 3C N/A Airtower 4C N/A Airtower 5C N/A Airtower 7.5C
Working Pressure N/A 125 psi160 psi N/A 125 psi160 psi217 psi N/A 125 psi160 psi217 psi N/A 125 psi160 psi217 psi
Complete System Flow Rate at 125 Pound Per Square Inch (psi) Working Pressure N/A 12 acfm N/A 16 acfm N/A 21 acfm N/A 28 acfm
Complete System Flow Rate at 160 Pound Per Square Inch (psi) Working Pressure N/A 9 acfm N/A 13 acfm N/A 17 acfm N/A 24 acfm
Complete System Flow Rate at 217 Pound Per Square Inch (psi) Working Pressure N/A N/A 9 acfm N/A 13 acfm N/A 19 acfm
Maximum Positive Pressure at 125 Pound Per Square Inch (psi) Working Pressure N/A 125 psi
Maximum Positive Pressure at 160 Pound Per Square Inch (psi) Working Pressure N/A 160 psi
Maximum Positive Pressure at 217 Pound Per Square Inch (psi) Working Pressure N/A N/A 217 psi N/A 217 psi N/A 217 psi
Nominal Motor Output N/A 3 hp N/A 4 hp N/A 5 hp N/A 7.5 hp
Receiver Volume N/A 56.8 gal
Width N/A 24 in
Depth N/A 39 in
Height N/A 58 in
Compressed Air Connection Thread Size N/A 3/4 in
Compressed Air Connection Thread Type N/A National Pipe Thread (NPT)
Sound Pressure Level N/A 69 dBA N/A 70 dBA N/A 70 dBA N/A 70 dBA
Weight N/A 628 lb N/A 628 lb N/A 639 lb N/A 661 lb
Advantages N/A
  • Ready to run - Install an AIRTOWER in no time at all. Simply connect to the power supply and compressed air distribution network and that's it-you're ready to go!
  • Protection from corrosion damage - Thanks to the integrated refrigerated dryer, the AIRTOWER package delivers a reliable supply of dry air that protects your tools and equipment from corrosion damage.
  • Simple maintenance - All maintenance and service points are easily accessible after removing the lightweight roto-molded polyethylene enclosure. The electronic condensate drain can be inspected via an opening on the cover.
Complete Unit N/A
  • Ready-to-run
  • Fully automatic
  • Super sound-proofed
  • Vibration-dampened
  • Double-skinned roto-molded polyethylene enclosure
  • Easy access to all service points
Airend N/A Sigma Profile rotors use approximately 10 to 20 percent less energy than conventional rotors of the same flow capacity.
Belt Drive N/A
  • Maintenance-free elastic belt
  • No re-tensioning
Fluid and Air Flow N/A
  • Honeycomb dry air filter
  • Inlet with check valve
  • Pneumatic venting valve
  • Cooling fluid tank with separately installed separator cartridge
  • Safety relief valve
  • Minimum pressure / check valve
  • Micro-filter in the cooling fluid circuit
Cooling N/A
  • Air-cooled
  • Aluminum cooler for cooling fluid with separate fan motor
  • Second fan on drive motor shaft
  • Automatic warm-up control (only active at very low loads)
Refrigerated Dryer Information N/A
  • CFC-free R-513A refrigerant
  • Control cabinet to IP 54
  • Overcurrent trip
  • Control transformer
Electric Motor N/A
  • Premium efficiency motor (IE3)
  • IP 54
  • Insulation class F for greater power reserve
Electrical Components N/A
  • Control cabinet to IP 54
  • Automatic wye-delta starter (above 4 hp)
  • Overload relay
  • Control transformer
Receiver N/A
  • Internally coated
  • Electronically controlled, zero-loss compressed air condensate drain
Sigma Control 2 N/A
  • "Traffic-light" LED indicators for at-a-glance operational control
  • Easy to read display
  • 30 selectable languages
  • Soft-touch keys with icons
  • Fully automatic monitoring and control
  • Dual, Quadro, Vario, and Continuous control included as standard
  • Interfaces: Ethernet
  • Additional optional communications modules for: Profibus DP, Modbus, Profinet, and DeviceNet, EtherNet/IP
  • SD card slot for data-logging and updates
  • RFID reader
  • Web server
Refrigerated Dryer N/A CT 4 N/A CT 4 N/A CT 8 N/A CT 8
Power Consumption N/A 0.3 N/A 0.3 N/A 0.5 N/A 0.5
Pressure Dew Point N/A 37 ºF
Refrigerant N/A R-513A
Global Warming Potential N/A 631
Refrigerant Volume N/A 0.38 lb N/A 0.38 lb N/A 0.44 lb N/A 0.44 lb
Refrigerant Mass as CO2 Equivalent N/A 0.1 t
Hermetic Refrigeration Circuit N/A Yes