Engineered to exceed strict European and international 220V–240V grid standards. Featuring R290 and R32 low-GWP closed loops, high-pressure bypass manifolds, and integrated micro-filtration.
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Explore SpecificationsAnalyzing thermodynamic efficiency, grid stability, legislative phase-outs of high-GWP refrigerants, and commercial sports recovery adoption.
Unlike residential 110V systems constrained by amperage limits (typically capped at 15A or ~1,650W total dissipation), the 220V–240V 50Hz/60Hz grid provides double the electrical potential. This allows compressors to operate with lower current draw, minimizing I²R copper resistance losses inside the windings, which reduces operating temperatures, extends compressor lifecycle, and yields rapid water pull-down speeds essential for boutique bathhouses and commercial fitness clubs.
Global environmental bodies are accelerating the phase-out of legacy HFCs with high global warming potential. HK Dongda has transitioned its entire ODM chiller architecture toward ultra-low GWP refrigerants such as R290 (Propane, GWP=3) and high-efficiency R32. These closed-loop systems fully conform to the European F-Gas Regulation (EU 2024/573), UL 60335-2-40 safety directives, and EPA AIM Act requirements, safeguarding overseas distributors from import embargos.
Traditional DIY plunges rely on hobbyist water chillers prone to thermal lockout when subjected to back-to-back users. Our commercial-tier ODM 220V chillers utilize industrial rotary compressors, high-surface-area hydrophilic aluminum condensers, and DC brushless inverter fans capable of uninterrupted operation across extreme ambient temperatures ranging from -10°C to 50°C without risk of coil freeze-up or head-pressure trip.
Our 220V ODM chiller ecosystem integrates medical-grade water sanitation, corrosion-proof titanium heat exchangers, and microprocessor-driven thermal expansion.
| Subsystem | Technical Specification | Material / Component Brand | Engineering Benefit |
|---|---|---|---|
| Refrigeration Circuit | Eco-Friendly R290 / R32 Micro-Channel Design | GMCC / Panasonic / Highly Rotary | High COP (Coefficient of Performance), rapid chilling to 2°C in <90 mins |
| Heat Exchanger | Shell-and-Tube or Coaxial Pure Titanium Coils | Grade 1 Industrial Titanium (TA1) | 100% immune to chlorine, bromine, ozone, and salt-water electrolysis corrosion |
| Water Filtration | Multi-Stage 20-Micron Pleated Sediment + Magnetic Core | Food-Grade Polypropylene & Neodymium | Captures organic particulate matter, protecting titanium heat exchange surfaces |
| Sanitization Core | UV-C Photolysis (254nm) + Low-Emission Corona Ozone | Quartz Glass Reactor, 12V Solid-State Ballast | Destroys 99.9% of waterborne bacteria, biofilm, and algae without chemical odor |
| Pump System | Integrated Self-Priming Magnetic Drive Pump | Ceramic Shaft, EPDM Seals (1000–1800 L/H) | Whisper-quiet acoustic profile (<48 dB), continuous 24/7 circulation durability |
| Logic Control | Dual-Core Microcontroller with PID Auto-Tuning | STMicroelectronics 32-bit MCU | ±0.5°C precise water temperature regulation, automated defrost & anti-freeze logic |
Explore how our versatile 0.3HP, 0.5HP, 1.0HP, and 1.5HP ODM chillers power diverse wellness ecosystems globally.
Professional athletic recovery programs require water temperatures sustained at 3°C to 5°C through constant rotations of 100kg+ athletes. Our 1.5HP dual-voltage systems with high-flow magnetic pumps cycle over 1,500 liters per hour, ensuring rapid thermal recovery between users without heat soak accumulation in the reservoir.
Pairing 220V chillers with Far Infrared Saunas and red-light photon therapy mats creates the ultimate contrast therapy suite. High-end Nordic and thermal spa operators leverage our ultra-silent, concealed plumbing connections, UV sterilization, and customized architectural casework to deliver hygienic immersion without mechanical noise.
For wellness startups and established retail brands scaling on Shopify or Amazon, we offer turnkey D2C packaging solutions. This includes 0.3HP to 0.5HP compact chillers matched with drop-stitch inflatable tubs or acrylic tubs, retail-ready unboxing packaging, custom branded smartphone apps, and full regional plug/voltage customization.
Our engineering laboratory provides complete regional compliance matching: CE (LVD/EMC) for the European Union, UKCA for Great Britain, SAA/RCM for Australia and New Zealand, and CB Scheme certifications across 50+ member nations.
Combining low-temperature plunge technology with deep far infrared hyperthermia creates comprehensive biological rejuvenation.
Alternating between 3°C cold water immersion and 65°C far-infrared sauna blanket sessions induces rapid rhythmic vessel contraction and expansion. This mechanical pumping action flushes accumulated metabolic waste, accelerates tissue oxygenation, and stimulates brown adipose tissue (BAT) thermogenesis.
Cold shock triggers an acute sympathetic spike followed by profound parasympathetic tone upon rewarming. Bundling our 220V ice chillers with FIR sauna blankets and PEMF crystal therapy mats provides wellness facilities with complete holistic recovery protocols validated by modern neuroscience.
Sourcing both thermal extremes from a single Hong Kong supply chain partner consolidates container volume, standardizes electronic controller UI across product categories, harmonizes compliance dossiers, and eliminates multi-vendor warranty finger-pointing.
Broaden your brand lineup with multi-frequency FIR sauna blankets, modular steam boxes, and integrated cold plunge tub systems.
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Explore SpecificationsFrom preliminary CFD heat dissipation simulations to serialized assembly line production, our engineers manage every milestone.
We analyze your target tub capacity (liters), desired pull-down timeline (e.g., from 25°C to 3°C in 2 hours), ambient operating envelope, and local voltage infrastructure. Our engineering team calculates exact compressor BTU output and evaporator sizing to prevent under-cooling.
Our industrial design group models custom outer sheet-metal enclosures, handle configurations, caster assemblies, and personalized LED touch displays. We supply 3D CAD step files and photo-realistic renders for client sign-off within 7 business days.
Functional prototypes undergo exhaustive climate-chamber trials: continuous 72-hour burn-in tests, high-humidity salt-spray corrosion tests for coastal placement, IPX4 ingress evaluations, and acoustic decibel profiling under full compressor load.
We flash proprietary controller firmware tailored to your brand identity. Options include customized startup splash screens, customized Wi-Fi/Bluetooth pairing protocols, and encrypted multi-tenant APIs for centralized commercial gym fleet management.
Every unit leaving our Guangzhou factory undergoes serialized barcode tracking, vacuum helium mass-spectrometer leak checks, electrical dielectric withstand (Hi-Pot) verification, and documented hydrodynamic flow rate calibration.
We provide comprehensive warranty fulfillment, air-shipped replacement core modules (pumps, PCBs, sensors), and localized English video documentation to empower your regional service technicians with zero operational downtime.
Clear, engineering-backed answers addressing voltage variations, refrigerant choices, pull-down thermodynamics, and MOQ terms.
Standard 110V household circuits are restricted to around 15–20 amps, capping total power delivery around 1.6 to 2.2 kW. When cooling large bodies of water (400L+) in high ambient temperatures, 110V systems struggle with extended runtimes and heat buildup. A 220V–240V system halves operating current for equivalent wattage, substantially reducing thermal stress on compressor windings, supporting larger horsepower motors (1.0HP to 1.5HP), and enabling ultra-fast temperature pull-down without tripping branch breakers.
Both R290 and R32 represent modern, eco-conscious alternatives to phased-out HCFC/HFC gases like R22 or R410A. R290 (propane) is a natural hydrocarbon with an ultra-low GWP of 3 and zero ODP (Ozone Depletion Potential), exempt from F-gas quotas in Europe. R32 offers superior volumetric capacity, ideal for high-capacity 1.5HP systems where compact design is essential. Both refrigerants fully comply with European F-Gas regulations, the US EPA AIM Act, and the Kigali Amendment.
Unlike copper or 304 stainless steel, which experience pitting and stress cracking in the presence of salt, chlorine, or ozone, Grade 1 Titanium spontaneously generates an impervious, passive titanium dioxide (TiO2) surface layer when exposed to oxygen. This inert film provides total immunity against galvanic oxidation, saltwater electrolysis, and high-concentration ozone sanitizer injections, guaranteeing a 10+ year heat exchanger operational lifespan.
Our units utilize a dual-stage non-chemical sanitation loop. First, a high-intensity 254nm UV-C photolysis reactor breaks down micro-organism cellular DNA as water passes through a quartz sleeve. Second, a micro-venturi injector blends corona-discharge ozone (O3), a potent oxidizer that eradicates oils, human sweat, and bacteria. Unused ozone naturally reverts to pure oxygen within minutes, keeping the plunge water crystal-clear without harsh chemical odors or eye irritation.
Pull-down speed is governed by water volume, ambient temperature, tub insulation R-value, and chiller horsepower. For a typical 400-liter tub with an insulated thermal cover in 25°C ambient air, a 0.5HP chiller lowers water to 3°C in approximately 3.5 to 4.5 hours. Our commercial-grade 1.5HP chiller achieves this in under 90 minutes. Once target temperature is reached, smart PID cycling maintains thermal equilibrium with minimal energy consumption.
For standard white-label orders with custom laser-engraved logos and retail cartons, our MOQ begins at just 10–20 units. For fully customized sheet metal enclosures, custom tooling colors, bespoke molded fittings, or private-label IoT app interfaces, the typical engineering pilot batch is 50 units. Initial prototypes ship in 14–21 days, while standard 40HQ container volumes are manufactured in 30–35 days.
