Cryotel® Cryocoolers

Sunpower’s CryoTel cryocoolers are the result of over 30 years of technical leadership, innovation and evolution in free-piston Stirling technology.  Our cryocoolers are cost effective, low in vibration, and extremely efficient.  In fact, you will not find a more efficient cryocooler on the market.  Since they require no maintenance, our customers can expect many years of high-performance, trouble-free cooling.

With Sunpower’s reputation for exceptional performance and reliability, the CryoTel family of cryocoolers is increasingly used in the medical, instrumentation, aerospace, research and development, security, astronomy, telecommunications, and pharmaceutical markets.  In addition, Sunpower’s cryocoolers integrate with and support technologies such as high temperature superconductivity,  mass spectrometry, optics, NMR, detectors, gas liquefaction, low noise amplifiers, and more.

Our customers benefit from the unsurpassed reliability, efficiency, and power density of our superior cryocooler technology.

Click on any product for more information.

Split Series Integral Series






Nominal Lift @77k
(23°C reject)
1.5 W 2.1 W 5 W 11 W 16 W
Nominal Cooler Input Power 30 W 43 W 80 W 160 W 240 W
Cooler Mass 1.2 kg 1.3 kg 2.1 kg 3.1 kg 3.1kg
Overall Length Cold Head:
128 mm
Wave Generator:
116 mm
Cold Head:
128 mm
Wave Generator:
116 mm
242.8 mm 260.0 mm 275.5 mm
Outside Diameter Cold Head:
39 mm
Wave Generator:
55 mm
Cold Head:
39 mm
Wave Generator:
55 mm
73.0 mm 83 mm 83 mm
MTTF 120,000 hrs Goal 120,000 hrs Goal 200,000 hrs 200,000 hrs 200,000 hrs
Temperature Stability +/- 0.1K +/- 0.1K +/- 0.1K +/- 0.1K +/- 0.1K
Power Supply DC 24 V DC 24 V DC 24 V DC 24 V DC 48V
AVC Capable no  no yes yes yes
Orientation Any Any Any Any Any
Cryotel Measured Preformance 15-graph 25-graph mt-graph ct-graph gt-graph
Datasheet Click for datasheet Click for datasheet Click for datasheet Click for datasheet Click for datasheet

Data is subject to change without notice.

The most efficient cryocoolers on the market

The graph below is a comparison of the efficiencies of the all of the known commercially available cryocoolers with 1 – 20 watts lift, expressed as a percentage of Carnot efficiency, verse the heat lift the cryocooler provides at 77 Kelvin expressed in watts.  From this data it is clear the CryoTel line of cryocoolers are the most efficient cryocoolers on the market.

Cryocooler Efficiency Plot no legend

A version of the above efficiency graph with all coolers listed by name can be downloaded directly here after logging in:

For cryocooler pricing information or additional technical data please email us directly at

Patent Information

Please go here for information regarding the CryoTel® patents.


The CryoTel® carries a 24-month full replacement warranty, exclusive of failure due to misuse. Sunpower develops other warranty arrangements for specific customers.

Warranty Information (PDF)

User Manuals

Generation 1 controller (purchased before May 2012)

Generation 2 controller (purchased after May 2012)