RIGID Stainless Steel Coil Chillers are compact DC vapor-compression liquid cooling systems designed for applications requiring a 316 stainless-steel refrigerant-to-liquid heat exchanger.

The S-Series combines a variable-speed BLDC miniature compressor, condenser, electronic controller and stainless-steel coil evaporator in a compact refrigeration module.

Available DC power options include:

• 12V DC
• 24V DC
• 48V DC

Typical cooling capacity is approximately 100–450W, depending on model and refrigeration operating condition.

The stainless-steel fluid path makes the S-Series particularly suitable for applications where fluid compatibility, corrosion resistance, cleanliness or material selection is more important than simply achieving the smallest possible heat exchanger.

RIGID’s chiller is the world’s smallest closed-loop liquid cooling system featuring a durable stainless steel coil and a miniature DC compressor. It combines lightweight design, high performance, and customizable options for OEM integration.

The 316 stainless steel coil provides excellent thermal conductivity and corrosion resistance, making it suitable for high-pressure or chemical environments such as anodizing baths and industrial cooling systems.

Cooling capacity changes with refrigeration operating conditions.

For example, the same compressor may deliver different capacities when the chiller operates at:

• +20°C coolant temperature
• +5°C coolant temperature
• 0°C coolant temperature
• High ambient temperature
• Different compressor speeds

Lower evaporating temperatures and higher condensing temperatures generally create a more demanding refrigeration condition. Therefore, statements such as “450W cooling” should always be tied to defined test conditions.

For engineering selection, RIGID evaluates:

Required heat removal + coolant temperature + maximum ambient temperature + flow rate + compressor operating point

rather than nominal compressor wattage alone.

The Stainless Steel Coil Liquid Chiller offers a cooling capacity from 100W to 550W, making it ideal for small-scale medical, laboratory, or electronic cooling applications.

It uses environmentally friendly R134a or R290 refrigerant, ensuring efficient cooling performance while meeting global environmental standards.

Yes. The 316 stainless steel heat exchanger allows the unit to withstand corrosive solutions such as sulfuric acid anodizing baths (up to 15%), making it more durable than standard water chillers.

Typical applications include medical devices, laboratory cooling, hydroponics, brewing, cold therapy systems, aquariums, lasers, and industrial process control.

Typical applications include:

• Medical equipment
• Laboratory instruments
• Analytical equipment
• Laser cooling
• Aesthetic devices
• Electronics cooling
• Scientific instruments
• Specialty process-fluid cooling
• OEM thermal management

For accurate chiller selection, start with:

Heat load + coolant + inlet temperature + required outlet temperature + flow rate + maximum ambient temperature + DC voltage.

It measures only 275×175×138 mm and weighs just 3 kg (6.6 lbs) — the perfect solution for tight spaces and mobile devices requiring efficient cooling.

Absolutely. RIGID specializes in custom OEM and ODM cooling modules, offering tailored designs, voltage options, and performance configurations to fit your unique application.

The closed-loop system prevents fluid contamination, ensures consistent thermal performance, and reduces maintenance - ideal for long-term, precision cooling applications.

Compact. Reliable. Powerful.

RIGID’s Stainless Steel Coil Liquid Chiller is a compact, closed-loop micro refrigeration system designed to deliver high performance in the smallest footprint. Engineered with 316 stainless steel coil tubing, this miniature chiller is built for demanding environments requiring durability, corrosion resistance, and precision temperature control.

The Stainless Steel Coil Micro Chiller is used across industries that demand precise temperature control and long-lasting performance:

Applications:

• Medical & Laboratory Equipment
• Cold Therapy & Physiotherapy Devices
• Aquariums & Hydroponics Systems
• Brewing & Fermentation Control
• Laser & Electronics Cooling
• Anodizing Baths & Industrial Process Cooling
• Laboratory and analytical instruments
• Pharmaceutical processing systems
• Laser and optical cooling systems
• Food and beverage equipment
• Industrial liquid cooling applications
• Chemical and corrosive environments

Yes. The chiller includes a DC compressor drive board that connects easily with your system’s control board, allowing variable speed control for optimized cooling efficiency.

It can cool water, glycol mixtures, alcohol-based solutions, or other compatible liquids, depending on your application’s needs.

Yes. Its BLDC inverter compressor ensures high energy efficiency and low power consumption, making it suitable for battery-powered or portable systems.

Definitely. Many medical and lab instruments use RIGID’s micro chillers for sample preservation, laser cooling, thermal therapy, and precise temperature management.

The unit is constructed with 316 stainless steel, micro-channel aluminum condenser, and durable copper tubing, ensuring longevity and corrosion resistance.

With proper installation and maintenance, RIGID’s stainless coil liquid chiller can last over 50,000 operating hours, thanks to its robust design and efficient DC compressor.

Yes. Its lightweight design and DC power compatibility make it ideal for mobile cooling systems, vehicle installations, or off-grid equipment.

You can purchase directly from https://www.rigidhvac.com/online-order or contact quinn@rigidhvac.com for inquiries, OEM designs, and technical support.

RIGID miniature liquid chillers use variable-speed BLDC compressor technology.

Variable-speed operation can allow the refrigeration system to adjust capacity according to changing thermal load.

Potential benefits include:

• Cooling-capacity modulation
• Reduced ON/OFF cycling
• Faster pull-down when higher capacity is required
• Partial-load operation
• More flexible temperature control
• Battery-energy management

The compressor controller must be matched to the specific compressor model and approved operating-speed range.

Built Around Your Thermal, Fluid & Mechanical Requirements.

A standard S-Series module may not fit every OEM application. RIGID can evaluate customized compact liquid-cooling systems according to:

• Cooling capacity
• 12V / 24V / 48V DC power
• Coolant type
• Fluid-contact material
• Target temperature
• Flow rate
• Heat exchanger
• Compressor
• Refrigerant
• Mechanical dimensions
• Liquid fittings
• Refrigerant piping
• Controller interface
• Temperature sensors
• Fan configuration

A typical development process is:

Requirements → Thermal Evaluation → Component Selection → Prototype → Performance Testing → Validation → Production