Hydrogen Refueling
Hydrogen Refueling · FCEV
Precision pre-cooling for hydrogen refueling.
Mydax is a leading provider of high-capacity, low-temperature chillers specifically designed for hydrogen refueling stations. Our CryoDax H2 Chiller Systems deliver unmatched cooling power below −40°C, ensuring efficient hydrogen pre-cooling for FCEV (Fuel Cell Electric Vehicle) refueling applications. With decades of experience in precision temperature control, Mydax is trusted for SAE J2601-compliant hydrogen fueling solutions — helping stations optimize refueling speed, safety, and efficiency.
Trusted by hydrogen infrastructure leaders
Why hydrogen pre-cooling matters
Fast, safe refueling starts with the chiller.
Hydrogen refueling stations must rapidly and efficiently transfer hydrogen into vehicle fuel tanks without overheating. Mydax CryoDax H2 Chillers help achieve:
Consistent hydrogen temperature control for optimal refueling
Reduced wait time between refuels with large reservoir buffer modules
Precise Syltherm Heat Transfer Fluid cooling for reliable pre-cooling performance
Compact, high-efficiency heat exchanger solutions
What sets Mydax apart
Industry first · Since 1986
Patented proportional refrigeration — engineered for hydrogen.
Mydax was the first chiller manufacturer to offer proportional refrigeration control — the technology behind the stability and efficiency that fast, safe hydrogen refueling demands.
The problem with conventional chillers
Most wear and breakdowns in chiller operation are caused by On/Off temperature cycling of the refrigeration circuit’s plumbing and components — the cycling that shortens service life and risks inconsistent pre-cooling.
The Mydax solution
Our proportional design smoothly adjusts refrigerant flow along the compressor’s power curve based on the cooling required, diverting excess capacity to a bypass heat exchanger. The result: tighter temperature stability, less thermal stress, and dependable performance through back-to-back refuels.
Built for hydrogen infrastructure
✓Ultra-low cooling below −40°C for hydrogen pre-cooling
✓Designed for SAE J2601 H70-T40 compliance (700 bar fueling)
✓High-capacity cooling — largest available for H2 pre-cooling
✓Reservoir & pump modules reduce cooldown between refuels
✓Microchannel diffusion-bonded stainless steel heat exchangers
✓Precise Syltherm HTF cooling for reliable performance
Featured system
CryoDax H2 — the ultimate hydrogen refueling chiller.
CryoDax H2 low-temperature liquid chiller system and hydrogen precooler MCHE micro-channel diffusion-bonded stainless steel heat exchanger — an excellent choice for SAE J2601 H70-T40 H2 FCEV automotive refueling precooler applications.
Ultra-low temperature coolingCapable of reaching temperatures below −40°C
High-capacity cooling performanceLargest available cooling power for hydrogen pre-cooling
SAE J2601 H70-T40 complianceIdeal for 700 bar hydrogen fueling
Reservoir & pump modulesReduces cooldown time for fast, efficient refueling
Microchannel heat exchanger technologyCompact, stainless steel bonded design for high-pressure hydrogen applications
Hydrogen precooler heat exchanger
Compact & powerful.
Mydax also provides specialized Hydrogen Pre-Cooler Heat Exchangers designed to work seamlessly with our CryoDax H2 chillers. These stainless steel, microchannel diffusion-bonded heat exchangers offer:
- Extremely low-temperature operation
- High-pressure resistance for hydrogen fueling applications
- Compact, efficient, and durable design
These heat exchangers ensure stable hydrogen cooling before dispensing, improving the performance and longevity of refueling station infrastructure.
Mydax stainless steel diffusion-bonded microchannel heat exchanger hydrogen pre-coolers
Hydrogen refueling standard system specifications
CryoDax H2 models.
| Model | Temperature Range | BTU/hr | kW | Tons | Stability | Heating Capacity |
|---|---|---|---|---|---|---|
| CryoDax 16H2-250 | −60 to +35°C | Varies | Varies | Varies | ±1.0°C | 3,000 W |
| CryoDax 30H2 | −60 to +35°C | Varies | Varies | Varies | ±1.0°C | 3,000 W |
| CryoDax 120H2 | −60 to +35°C | Varies | Varies | Varies | ±1.0°C | 3,000 W |
Industry-leading performance
Powering next-generation hydrogen infrastructure.
Mydax CryoDax H2 chiller systems are used worldwide to support next-generation hydrogen fueling stations. Our technology helps accelerate the transition to clean energy transportation by providing reliable and efficient pre-cooling solutions for FCEV fueling.
CryoDax H2 refueling data
Detailed performance data & charts.
Mydax chilling solutions
Built for the most demanding thermal challenges.
Custom Temperature Control Solutions
At Mydax, we specialize in custom-engineered recirculating liquid chillers designed for precision temperature control across industries like pharmaceuticals, aerospace, semiconductor manufacturing, and chemical processing. Whether you need ultra-low temperature chilling, multi-loop control, or high-heat stability, our engineered-to-order systems ensure peak performance and efficiency.
Advanced Refrigeration Technology
Our patented proportional refrigeration control sets us apart, delivering unmatched temperature stability and energy efficiency. With air-cooled and water-cooled options, multi-zone configurations, and advanced PLC-based control systems, our chillers provide precise, reliable, and scalable solutions for critical applications.
Industry-Leading Process Chillers
From aerospace and defense to hydrogen FCEV refueling and semiconductor applications, our process chillers are designed for demanding environments. Each unit is built with rugged construction, leak-free pumps, and advanced monitoring systems, ensuring maximum uptime and reliability.
Engineered, Manufactured & Serviced in the USA
Designed, built, and tested in-house, Mydax chillers undergo rigorous quality control to meet the highest industry standards. With a commitment to innovation, durability, and customer support, we deliver turnkey temperature control solutions for the most complex thermal management challenges.
Planning a hydrogen refueling station?
Tell us your station requirements — flow, pressure, throughput, and ambient conditions — and our engineers will match you to the right CryoDax H2 system.