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Dryer, Filter, and Drain in One Compact Package
Kaeser High Temperature Refrigerated Dryers (HTRD) are specifically designed for use with 5-25 hp piston compressors, although they will work well with any similar sized compressor producing high discharge temperatures. The HTRD contains an aftercooler, refrigeration unit, filtered separator and drain to remove moisture and contaminants to a level suitable for most shop tools. This greatly increases tool life, reducing maintenance and downtime, for paint spraying applications we strongly recommend also using a KOR model coalescing filter.
Easy to Install
The HTRD dryer features a compact design that requires little floor space and allows for convenient installation. Staggered inlet/outlet connections make piping easy. Simply make pipe connections and plug in the electrical cord to a 120 V or 230 V depending on model, 1 phase outlet and the unit is ready for operation.
Easy to Use and Maintain
The dryer operates continuously without adjustments. Replacing the filter sleeve is simple and cleaning the refrigeration condenser filter and inlet strainer is easy to accomplish.

All dryers are CSA certified, CFC free, and use environmentally friendly R407c refrigerant.
Five-year warranty on heat exchanger.
Two-year warranty on refrigeration system.
PI - High Temperature Refrigerated Dryer
Dimensional Drawing
Unit of Measure
Items PI - High Temperature Refrigerated Dryer
HTRD 20
High Temperature Refrigerated Dryer
PI - High Temperature Refrigerated Dryer
HTRD 25
High Temperature Refrigerated Dryer
PI - High Temperature Refrigerated Dryer
HTRD 35
High Temperature Refrigerated Dryer
PI - High Temperature Refrigerated Dryer
HTRD 50
High Temperature Refrigerated Dryer
PI - High Temperature Refrigerated Dryer
HTRD 75
High Temperature Refrigerated Dryer
Manufacturer N/A Kaeser
Product Family N/A Compressed Air Dryers
Series N/A Hgih Temperature
Flow Rate at 175 psig N/A 23 scfm N/A 29 scfm N/A 41 scfm N/A 58 scfm N/A 87 scfm
Flow Rate at 150 psig N/A 22 scfm N/A 27 scfm N/A 38 scfm N/A 54 scfm N/A 81 scfm
Flow Rate at 125 psig N/A 20 scfm N/A 25 scfm N/A 35 scfm N/A 50 scfm N/A 70 scfm
Flow Rate at 100 psig N/A 18 scfm N/A 23 scfm N/A 32 scfm N/A 45 scfm N/A 68 scfm
Connection Size (Inlet/Outlet) N/A 1/2 in. N/A 1/2 in. N/A 1/2 in. N/A 3/4 in. N/A 3/4 in.
Dimensions (W x D x H) N/A 10 1/8 x 12 7/8 x 28 1/4 in. N/A 10 1/8 x 12 7/8 x 28 1/4 in. N/A 10 1/8 x 12 7/8 x 28 1/4 in. N/A 16 7/8 x 16 7/8 x 36 3/4 in. N/A 16 7/8 x 16 7/8 x 36 3/4 in.
Width N/A 10 1/8 in. N/A 10 1/8 in. N/A 10 1/8 in. N/A 16 7/8 in. N/A 16 7/8 in.
Depth N/A 12 7/8 in. N/A 12 7/8 in. N/A 12 7/8 in. N/A 16 7/8 in. N/A 16 7/8 in.
Height N/A 28 1/4 in. N/A 28 1/4 in. N/A 28 1/4 in. N/A 36 3/4 in. N/A 36 3/4 in.
Max. Working Pressure N/A 175 psig
Ambient Temperature N/A 35 to 110 ºF
Max. Inlet Temperature N/A 180 ºF
Weight N/A 79 lbs N/A 80 lbs N/A 81 lbs N/A 150 lbs N/A 155 lbs
Standard Features N/A
  • Built to handle high inlet temperatures to180°F
  • Stainless steel, plate-type heat exchangers are compact, durable, and efficient
  • Integral filter helps remove moisture, hydrocarbons and solid particles
  • Condensate drain automatically discharges liquid from dryer without air loss
  • Automatic refrigeration temperature control system maintains precise chilled air temperature
  • Hermetic refrigeration compressor requires no maintenance or adjustments
  • Cool air exiting from the evaporator is reheated to save energy and prevent pipe sweating