316 Stainless Steel Micro Liquid Chiller | Compact BLDC Cooling System

Stainless Steel Coil Liquid Chiller
316 Stainless Steel Coil Liquid Chiller – Compact Corrosion-Resistant Micro Cooling System
RIGID’s Stainless Steel Coil Liquid Chiller is one of the world’s most compact and advanced micro refrigeration cooling systems, engineered for high performance in space-constrained applications. Built with a 316 stainless steel coil heat exchanger, it delivers outstanding corrosion resistance, durability, and fluid compatibility, even in harsh or sensitive environments.
Powered by a high-efficiency DC BLDC mini compressor (12V / 24V / 48V) and supporting R134a or R290 refrigerants, this compact unit provides a reliable cooling capacity of 100W to 550W, all within a lightweight design of approximately 3 kg. Its fully integrated structure combines a condenser, stainless steel evaporator, filter drier, and intelligent driver board into a single plug-and-play cooling module.
Designed for OEM integration, the system enables precise temperature control through variable compressor speed, ensuring energy-efficient and stable cooling performance. Its closed-loop stainless steel design makes it ideal for applications requiring high hygiene standards and long service life.
Typical applications include medical devices, laboratory instruments, laser systems, hydroponics, brewing, cold therapy, and industrial cooling.
With flexible customization options and advanced engineering, RIGID’s stainless steel micro liquid chiller is more than a cooling unit—it’s a compact, reliable, and high-performance thermal management solution for next-generation equipment.
Compact. Reliable. Powerful.
The Stainless Coil Liquid Chiller is a fully integrated circulatory cooling subsystem.
Weight: 3 kg (6.6 lbs)
Refrigerant: R134a / R290
Voltage: 12V / 24V / 48V DC
Cooling Capacity: 100W~550W
Dimension: 275 × 175 × 138 mm
Compressor: BLDC mini mompressor
Evaporator: Material 316 St. St. coil
Cooling type: Closed-loop liquid chiller
Drive board: Sinewave PCB with speed 2500~6000RPM.
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Product Models
Product Model: DV1910E-S
Capacity: 450W (1,535Btu)
Voltage: DC 12V
Capacity: 130W (LBP)
Compressor: QX1901VDL
Refrigerant: R134a or R290
Net Weight: 3.0kgs (6.6lbs)
Working Amps: 1~8A, (Max 10A)
Size: 200x230x148mm (7.87x9.05x5.8 inch)
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Product Model: DV1920E-S
Capacity: 450W (1,535Btu)
Voltage: DC 24V
Capacity: 130W (LBP)
Compressor: QX1902VDL
Refrigerant: R134a or R290
Net Weight: 3.0kgs (6.6lbs)
Working Amps: 1~7A, (Max 8.5A)
Size: 200x230x148mm (7.87x9.05x5.8 inch)
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Product Model: DV1930E-S
Capacity: 450W (1,535Btu)
Voltage: DC 48V
Capacity: 130W (LBP)
Compressor: QX1903VDL
Refrigerant: R134a or R290
Net Weight: 3.0kgs (6.6lbs)
Working Amps: 1~4A, (Max 7.5A)
Size: 200x230x148mm (7.87x9.05x5.8 inch)
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Product Model: DV3220E-S
Capacity: 550W (1,876Btu)
Voltage: DC 24V
Capacity: 200W (LBP)
Compressor: QX3202VDL
Refrigerant: R134a or R290
Net Weight: 5.0kgs (11.02lbs)
Working Amps: 1~4A, (Max 7.5A)
Size: 275x175x138 mm (10.83x6.9x5.4 inch)
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Designed for Harsh and Sensitive Environments
The key advantage of this model is its 316 stainless steel evaporator, which provides excellent:
Corrosion resistance (ideal for aggressive liquids or environments)
Chemical compatibility (suitable for medical, laboratory, and industrial fluids)
High hygiene standards (perfect for clean and sensitive applications)
Extended service life in demanding operating conditions
This makes the Stainless Steel Coil Liquid Chiller the preferred choice for applications where durability and fluid compatibility are critical.
Optimized for OEM Integration
Like all RIGID cooling modules, this system is designed as a plug-and-integrate liquid cooling subsystem for OEM customers.
The BLDC compressor driver board allows users to control compressor speed via their main control system, enabling:
Precise temperature control
Energy-efficient operation
Flexible performance adjustment
This modular approach simplifies integration into custom equipment, industrial systems, and specialized machinery.
Key Features
Supports R134a and R290 Refrigerants.
Low Noise and Energy-Efficient Operation.
Intelligent Driver Board for variable speed control.
Compact and Integrated Design for easy integrated installation.
316 Stainless Steel Coil Evaporator for superior corrosion resistance.
High-Efficiency Mini BLDC Compressor for reliable cooling performance.
OEM-Ready Cooling Module for seamless system integration.
Cooling-fluid Loop Chiller

Compact water chiller: mini compressor, condenser, evaporator; Temperature cools from -25℃ to 20℃.
Mini refrigeration Expertise

Empowers core cooling, offering endusers unparalleled adaptability for their devices.
OEM Refrigeration Solutions

Ideal for laser, battery, laboratory, medical devices, electronics, ensuring reliability, and temp stability.
Small Thermal Solutions

Compact size, minimal weight and industrial-class reliability for various of cooling applications.
Typical Applications
316 Stainless Steel Micro Liquid Chiller | Compact BLDC Cooling System
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
Online Store
Stainless St. Coil Chiller DV3220E-S (24V)
$490.00
Product: Compact Refrigeration Unit
Compressor: QX3202VDL
Voltage: DC 24V
Capacity: 200W (LBP)
Refrigerant: R134A
Size: 275x175x138 mm
Weight: 3kgs (6.6lbs)

Applications:
Miniature water cycle refrigeration; Portable Cooling System.
Quantity
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Stainless St. Coil Chiller DV1910E-S (12V)
$420.00
Product: Compact Refrigeration Unit
Compressor: QX1901VDL
Voltage: DC 12V
Capacity: 130W (LBP)
Refrigerant: R134A
Size: 25x15x17 cm (9.8X6.3X5.3 inch)
Weight: 2.3kgs (5.1lbs)

Applications:
Miniature water cycle refrigeration; Portable Cooling System.
Quantity
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Stainless St. Coil Chiller DV1920E-S (24V)
$430.00
Product: Compact Refrigeration Unit
Compressor: QX1902VDL
Voltage: DC 24V
Capacity: 130W (LBP)
Refrigerant: R134A
Size: 25x15x17 cm (9.8X6.3X5.3 inch)
Weight: 2.3kgs (5.1lbs)

Applications:
Miniature water cycle refrigeration; Portable Cooling System.
Quantity
Coming soon
Stainless St. Coil Chiller DV1930E-S (48V)
$440.00
Product: Compact Refrigeration Unit
Compressor: QX1903VDL
Voltage: DC 48V
Capacity: 130W (LBP)
Refrigerant: R134A
Size: 25x15x17 cm (9.8X6.3X5.3 inch)
Weight: 2.3kgs (5.1lbs)

Applications:
Miniature water cycle refrigeration; Portable Cooling System.
Quantity
Coming soon
Stainless Steel Coil Liquid Chiller – Compact, Corrosion-Resistant Micro Cooling System
At RIGID, we specialize in miniature compressors, micro refrigeration systems, and compact liquid cooling solutions. Our engineering team works closely with global OEM partners to deliver customized cooling systems tailored to specific application requirements.
We support both OEM and ODM projects, ensuring flexibility in design, performance, and integration.
Our Advantages:
OEM & ODM support for custom cooling designs
Proven reliability and energy efficiency
Minimal footprint, maximum performance
Strong R&D team and in-house manufacturing
Custom Design
Standard Products and Custom Solutions
Established in 2010, RIGID is the manufacturer who's behind many popular brands in the US. RIGID's vision is to set the benchmark standard for the micro cooling industry. We are a China manufacturer and supplier of compact cooling systems, working in close cooperation with the leading United States and European manufacturers of Air-conditioning & Refrigeration.

In addition to offering standard products including Micro DC Aircon (ruggedized air conditioner modules for compact and confined space cooling), Liquid Chiller Modules (battery-driven compact refrigeration systems that our customers integrate into their applications), and DC Condensing Units (world's small direct cooling units used by customers in small freezer, medical, laser, and electronics cooling). RIGID also custom design or modify refrigeration systems for most customers' specific applications.

Let our engineering team develop the perfect cooling solution for you!

Micro DC Aircon
Ultra Compact & Light Weight
Plate Liquid Chiller
Frame and Plate Evaporator
Coaxial Liquid Chiller
St. St. Coaxial Evaporator
St. St. liquid Chiller
Stainless St. Coil Evaporator
Copper Liquid Chiller
Copper Steel Coil Evaporator
DC Condensing Unit
Ultra Small Direct Cooling
Contact Us
We have our own R&D department and manufacturing facilities. Thereby, we control the complete process from the first idea to the delivery of finished cooling products to customers. If you don’t see what you are looking for in our product lineup, do not hesitate to talk to us about your system.
Apart from standard cooling systems, RIGID also provides custom solutions. We have developed solutions for medical devices, life science, laboratory, electronics, laser, Lithium battery, and electric vehicle customers.
We can design a miniature cooling system to meet the requirements of your application. To learn more, go to our Design & OEM page. Or, please contact us for a free evaluation of your application quinn@rigidhvac.com.
FAQ
The Stailess Steel Coil Chiller in your application serves an important purpose – it helps keep your component cool. If you have questions about compact thermal management, we have the answers. Check out some of the most frequently asked questions (FAQ) about chiller systems below to learn more.
1. What is a Stainless Steel Coil Liquid Chiller?
A Stainless Steel Coil Liquid Chiller is a compact cooling system that uses a 316 stainless steel coil heat exchanger to cool liquids efficiently. It’s ideal for applications requiring corrosion resistance, compact design, and precise temperature control.
2. What makes RIGID’s Stainless Steel Chiller unique?
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.
3. How does the stainless steel coil help cooling performance?
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.
4. What voltage options are available?
RIGID’s stainless steel coil chiller supports 12V, 24V, and 48V DC power inputs, ensuring flexible integration into various mobile, off-grid, or equipment-based systems.
5. What is the cooling capacity of this mini chiller?
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.
6. What refrigerant does the RIGID micro chiller use?
It uses environmentally friendly R134a or R290 refrigerant, ensuring efficient cooling performance while meeting global environmental standards.
7. Can this chiller handle corrosive liquids or harsh environments?
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.
8. What applications use RIGID’s stainless coil micro chiller?
Typical applications include medical devices, laboratory cooling, hydroponics, brewing, cold therapy systems, aquariums, lasers, and industrial process control.
9. How compact is the Stainless Steel Coil Chiller?
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.
10. Can RIGID customize the micro chiller for OEM projects?
Absolutely. RIGID specializes in custom OEM and ODM cooling modules, offering tailored designs, voltage options, and performance configurations to fit your unique application.
11. How does the closed-loop design benefit my system?
The closed-loop system prevents fluid contamination, ensures consistent thermal performance, and reduces maintenance - ideal for long-term, precision cooling applications.
12. Is it suitable for continuous operation?
Yes. RIGID’s stainless chiller is engineered for 24/7 continuous operation, delivering stable and reliable cooling in demanding environments.
13. Can I control compressor speed and cooling output?
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.
14. What fluids can be cooled with the stainless steel chiller?
It can cool water, glycol mixtures, alcohol-based solutions, or other compatible liquids, depending on your application’s needs.
15. Is this micro chiller energy efficient?
Yes. Its BLDC inverter compressor ensures high energy efficiency and low power consumption, making it suitable for battery-powered or portable systems.
16. Can the unit be used for medical or laboratory cooling?
Definitely. Many medical and lab instruments use RIGID’s micro chillers for sample preservation, laser cooling, thermal therapy, and precise temperature management.
17. What materials are used in the chiller construction?
The unit is constructed with 316 stainless steel, micro-channel aluminum condenser, and durable copper tubing, ensuring longevity and corrosion resistance.
18. How long does the chiller last?
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.
19. Can the chiller be used in portable or mobile systems?
Yes. Its lightweight design and DC power compatibility make it ideal for mobile cooling systems, vehicle installations, or off-grid equipment.
20. How can I order or request a custom design?
You can purchase directly from https://www.rigidhvac.com/online-order or contact quinn@rigidhvac.com for inquiries, OEM designs, and technical support.