Ai SST -20°C To 99°C 7L Compact Recirculating Chiller


Ai C20 series recirculating chillers are the true thermostatic control laboratory chiller, this closed laboratory chiller is ideal for applications such as cooling rotary evaporators, analytical instrumentation, laser etching, ICP, vacuum systems, plasma etching and jacketed reactors. This system can also be used as a replacement to tap water cooling in laboratory applications.

Ai C20 are compressor-based recirculating chillers that offer outstanding performance and high reliability as well as quiet operation and ease-of-use. Powerful force/suction pump provides constant flow rates, while 2nd generation controller gives you the ideal solution when you need precise temperature control or cooling below ambient temperature.


C20 recirculating chiller features

  • ETL tested to UL and CSA standards
  • All stainless steel finish
  • Powerful 2,000 watts heater
  • Adjustable pumping speed up to 20 liters per minute
  • 2nd generation 7" TFT touch screen controller
  • No dry ice or liquid nitrogen needed
  • ANSI standard all stainless steel reservoir
  • All steel construction for durability
  • Eco-friendly R404A refrigerant
  • Small footprint saves valuable lab space
  • Cost saving as the water consumption is completely eliminated
  • Connection tubing included
  • Recommended for 2L rotary evaporators and 2L-10L distillation systems


Attention! Do NOT use Ai Chill-50 heat transfer fluid with this unit.


 Model  C20-7sst
 Temperature range  -20°C to +99°C (No load)
 Electrical requirements
 110V 60Hz or 220V 60Hz 1-Phase 2,500 watts
 Compressor  Make: SECOP (formerly known as Danfoss), Germany
Number of compressor: one
Refrigerant: R404A (190g)
Cooling capacity:
420W at 20°C
410W at 10°C
390W at 0°C
350W at -10°C
300W at -20°C
 Heating capacity  2,000 watts
 Recirculating pump  Pumping speed: 20 liters per minute, adjustable
Maximum head: 16 feet or 5 meters
Maximum pressure:  6.5 psi
 Dimensions: 8 x 10 x 5.5″ (WxDxH)
Material: Type 304 stainless steel, polished

 Capacity: 7.3 liters or 1.9 gallons
Chilling fluid connection: 3/8″ hose barb x 2
Chilling fluid drain port: 3/8″ hose barb with on/off valve
 Temperature controller  Type: Digital microprocessor PID controlled
Display: 7″ TFT touch screen
Display unit: Degree Celsius °C
Temperature step: 0.1°C
Temperature accuracy: +/- 2°C
Temperature range: -20°C to 99°C
 Recommended coolant
 For 50°F/10°C or higher:
Distilled water
Between 50°F/10°C and -4°F/-20°C:
50% ethylene glycol + 50% distilled water
 Working environment  -15°C/5°F to 25°C/77°F, at <66% humidity
 Built-in swivel casters  No
 Unit/shipping dimensions
 12 x 15.5 x 26″ / 15 x 20 x 30″ (WxDxH)
 Unit/shipping weight  68 Lbs / 100 Lbs
 Safety  Compressor over-temp protection
Compressor power surge delay protection
Short circuit and ground protection
Over-current protection
Over-temperature protection
Upper/lower temperature alarm protection
Compressor delay start protection
 Recommended for
 Ai 2L, 5L or 10L short path distillation systems
Ai 2L SolventVap rotary evaporators
 Warranty  One year
 Compliance  UL 61010-1 :2012 Ed.3+R:29Apr2016
CSA C22.2#61010-1 :2012 Ed.3

Standard Package


 Part description  Quantity
Part image
 Ai C20-7 -20°C 7L recirculating chiller 1 pc
 3/8″ insulated chilling fluid tubing
5 ft x 2
 1/2″ NPT to 3/8″ hose barb drain port adapter 1 pc
 User’s manual 1 pc