About Us
Precision temperature control, engineered to last, since 1986.
From the Sierra Foothills of Northern California, Mydax has spent nearly four decades solving the temperature-control problems other manufacturers can’t — with standard systems, configurable options, and fully custom engineering trusted by the most demanding industries in the world.
Mission, vision & values
Our Mission
Positioning ourselves as the premier provider of reliable low-temperature, customized chilling solutions for enterprise needs.
Our Vision
To be the globally recognized leader in innovative low-temperature chilling solutions, setting new standards for customization and reliability. We envision a future where our technology powers sustainable advancements across industries — enhancing productivity and efficiency worldwide.
Our Values
Guided by adaptability, sustainability, reliability, integrity, exceptional customer service, and a dedicated team, we move into the future with strength and unlimited growth potential.
The chiller manufacturer for demanding temperature problems.
Mydax designs and manufactures temperature-controlled recirculating liquid chiller systems — air-cooled and water-cooled refrigerated chillers, outdoor-rated systems, and non-refrigerated recirculating liquid-to-liquid and liquid-to-air heat exchangers. Nearly all systems are available with heating capabilities and particulate and/or deionizing filtration when applicable, and every system offers patented proportional temperature control using an embedded microprocessor.
Located in the Sierra foothills of Northern California, Mydax combines deep expertise across electronics, refrigeration, and advanced materials to build only the highest-quality temperature control systems available. Since 1986, Mydax has been known as the chiller manufacturer that delivers innovative solutions for the most demanding temperature-control challenges.
Patented proportional refrigeration control
Mydax was the first chiller manufacturer to offer proportional refrigeration control — and it remains the heart of what makes a Mydax chiller last.
The problem with conventional chillers
Most of the wear and breakdowns associated with chiller operation are caused by temperature cycling of the refrigeration circuit’s plumbing and components. This cycling — long associated with conventional chillers — is what shortens their service life.
The Mydax solution
Our proportional refrigeration design smoothly adjusts refrigerant flow along the compressor’s power curve, based on the cooling required. When elevated cooling power is needed, refrigerant is regulated for maximum flow to the evaporator. When less cooling is needed, flow is reduced and the excess is diverted to the bypass heat exchanger — easing thermal stress on components and eliminating the cycling wear that limits conventional chillers.
Ruggedly built. Thoroughly tested. Every unit.
We strive for the quality our customers have come to depend upon. Components are chosen from only the most reliable manufacturers, and each chiller is carefully constructed by knowledgeable builders, then thoroughly inspected and tested to ensure it meets design specifications.
Welded steel frames
Steel tube frames are completely welded, eliminating the weaknesses found in typical bolted-together sheet-metal designs.
Brazed copper joints
All permanent copper fittings in the refrigeration circuit are brazed for extra strength — eliminating leak-prone flare fittings and low-temperature solder joints.
Insulated circuits
Recirculating fluid plumbing and much of the refrigeration circuit is insulated to minimize cooling-capacity losses and prevent unpredictable operation from drafts or fluctuating ambient conditions.
Safety devices & alarms
All Mydax chillers are equipped with a wide variety of safety devices and status alarms to protect your process and the system itself.
Mydax OEM chillers in production
Proven against your real-world conditions.
All Mydax systems are thoroughly tested under conditions customized to each unit’s design specifications. Final performance testing includes prolonged temperature cycling against active external heat loads — simulating the customer’s intended application before the system ever leaves our facility.
Test results are provided to the customer along with a custom-written user’s manual at the time of shipment, so you know exactly how your system performed against your requirements.
Find the right chiller for your temperature.
“Low temperature” means something different to every industry — a hydrogen station thinks −40°C, a biotech freezer thinks −80°C, a supermarket thinks −20°C. Tell us your industry and setpoint, and we’ll match you to the right Mydax system.