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Mr. Steam CU Series Commercial Steam Shower Generator Package

Mr. Steam CU Series Commercial Steam Shower Generator Package

Introducing the Mr. Steam CU Series, a premier commercial steam bath generator, meticulously engineered for the rigorous demands of high-traffic commercial steam showers.

This robust and powerful steam generator is ideal for large-scale facilities, efficiently serving one or two spacious steam rooms from a minimum of 201 cubic feet up to 4500 cubic feet.

Crafted with resilience and durability in mind, the CU Series boasts a stainless-steel outer casing that resists corrosion and wear. At its core lies a National Board recognized pressure vessel, insulated and paired with a formidable stainless-steel heating element that can withstand anywhere between 9-108 kW. Before leaving the factory, each unit undergoes thorough wiring checks and pre-testing, ensuring flawless functionality upon delivery.

Ideal for health clubs, day spas, and luxury hotels, the Mr. Steam CU Series is a trusted name in commercial wellness, delivering consistent and reliable steam experiences day after day. This high-efficiency steam room boiler meets all UL, ASME, and CSA standards, a testament to its safety and superior quality.

Understanding the importance of maintenance in commercial settings, the CU Series features an Automatic Blowdown System, simplifying upkeep by automatically purging sediment buildup daily. To further enhance its performance and prolong its lifespan, we recommend coupling it with an effective water treatment system.

The CU Series is equipped with the Digital 1 control package, complete with intuitive controls, dual steam solenoids, and a pair of AromaSteam heads, creating an immersive and aromatic steam experience. Facility operators will appreciate the built-in pressure gauge and sight glass for at-a-glance monitoring, while the auxiliary manual reset and low-water cutoff features add an extra layer of operational safety.

Available in diverse three-phase power configurations (208V, 240V, and 480V), the CU Series offers flexibility to suit a variety of electrical setups. Proudly designed, engineered, and assembled in the USA, the Mr. Steam CU Series represents the pinnacle of American craftsmanship in commercial steam bath technology.

Choose the Mr. Steam CU Series for your facility depending on your power needs (9-108 kW) and experience the ultimate in performance, reliability, and luxury steam bathing. Its perfectly tailored for the most demanding commercial environments.




Mr. Steam CU Series Club Generator:

  • Visual Monitoring System: Includes a sight glass for operational observation.
  • Optimized Drainage: Equipped with a full 1" drain port.
  • Stainless Steel Jacket: Enhances durability and corrosion resistance.
  • Space-Saving Design: Compact and vertical for easy integration.
  • Reliable Components: Utilizes durable electronic parts.
  • Certified Pressure Vessel: Features a National Board registered vessel.
  • Energy-Efficient Insulation: High-quality fibrous glass insulation maximizes energy performance.
  • Robust Heating Elements: Stainless steel elements with ASME grade flanges for extended lifespan.
  • Precise Steam Control: Steam-rated operating and high limit pressure controls for efficient steam on demand.
  • Easy Installation: Designed for straightforward setup and maintenance access.
  • Safety Standards Compliant: Meets ASME requirements and UL/CSA testing standards.

Refer the Comparison Chart under 'Specifications' to see which generator package best suits your requirements

Digital 1 Control:

  • Accurate Temperature Regulation: Includes a sensor for steam room temperature control.
  • Quick-Response Thermistor: Advanced, low-mass thermistor with sensor guard for tight temperature tolerances.
  • Efficient Control: Electronic temperature control, pre-installed, with optional remote installation.
  • Temperature Range: Offers a full range from 100˚ F - 120˚ F.
  • In-Room High Temperature Control: Integrated for additional reliability.

Steam Solenoid Valves:

  • Quality Construction: Brass with stainless steel trim, perfectly sized for distribution.
  • High-Performance Seat: Steam-rated for reliable and quick steam delivery.

Aromasteam Steamheads:

  • Durable Build: All brass with a polished chrome finish.
  • Optimal Steam Delivery: Full 3/4 inch NPT size ensures quiet and controlled steam.
  • AromaFlo Compatibility: Engineered for seamless operation with Mr. Steam's aromatic oil system.

Automatic Blowdown System:

  • Sediment Management: Programmed daily discharge for sediment removal.
  • Digital Timer Control: Enables 24/7 operation and AutoFlush functionality.

Auxiliary Manual Reset:

  • Safety Backup: Provides an independent manual reset and low water cutoff control.


Package Includes

  • Steam bath generator (9/ 12/ 18/ 24/ 30/ 36/ 48/ 60/ 72/ 108 kW)
  • Installation and operation manual
  • Limited warranty

Refer the Comparison Chart under 'Specifications' to see which generator package best suits your requirements



The size of the room will determine the size of the generator. After taking into consideration all  factors affecting resultant steam room volume including length, width & height of steam room and distance to generator, select proper Model CU generator.

See the Comparison Chart below to see which generator package best suits your requirements

Generator Model kW Rating Max Room Volume
(Cu ft.)
W x L x H"
Shipping Weight
CU360 9 400 20 x 30 x 38 230
CU500 12 500 20 x 30 x 38 230
CU750  18 750 20 x 30 x 38 230
CU1000 24 1000 20 x 30 x 38 230
CU1250 30 1250 20 x 30 x 38 230
CU1400 36 1400 20 x 30 x 38 300
CU2000 48 2000 24 x 33 x 44 330
CU2500 60 2500 24 x 33 x 44 380
CU3000 72 3000 24 x 33 x 44 390
CU4500 108 4500 28 x 34 x 59 625


Common Specs across all Models

  • [View Installation & Operation Manual here]
  • [View Spec Sheet here]
  • Water Supply Connection: 1/2" NPT (except C1400, C1250, C1000, C0750, C0500, C0360 with 1/4" NPT)
  • Steam Head Connection: 3/4" NPT
  • Drain Connection: 1" NPT
  • Safety Relief Valve Connection: 3/4" NPT
  • Safety Relief Valve PSIG: 15 PSIG
  • Control "Rough In" Cut Out: 3-1/2" x 3-1/2"
  • Control Sensor Cable: 30' 5", 25', 2 Conductor, 24 AWG, Shielded Cable
  • Control Sensor "Rough In" Cut Out: 3/8" Diameter
  • Generator Control Connection: 6 Position Terminal Block
  • Generator Control Cable: 6" Long, 4 Conductors, 16 AWG