Memorial Day DEALS -- Call or text (1-844-493-7633) to find your best deal


Your Cart is Empty


Mr. Steam 9kW MS-E Series Steam Shower Generator MS400E

Available Features
Volts & Phase

Estimated to ship:

Call or text anytime 1-844-HYDRO-33 (1-844-493-7633)


The Mr. Steam MS400E 9kW home steam shower generator is designed for residential steam rooms up to 257 adjusted cubic feet (ACF). 

Required control package sold separately.

The MS400E steam shower generator is equipped with a stainless-steel tank, industrial-grade heating elements, precision temperature probe, electronic water-level control system, and a variety of other features. LED color indicators which provide visual feedback for diagnostics.

Mr. Steam MS-E Series generators are engineered for years of safe, reliable, clean, and efficient operation. The MS400E steam unit features an advanced microprocessor operating platform and intelligent steam bath technology, making it the perfect choice for residential steam bathing applications.

The compact size of the MS400E allows the generator to be installed conveniently out of sight. The steam shower unit can be installed in vanities, closets, cabinets, and other similar locations.

The MS400E 9kW steam generator is available in 240V single-phase (1PH) configurations.

The unit is designed so that steam shower accessories such as aromatherapy and chromotherapy can be easily installed.
The MS400E generator requires a Mr. Steam control or control package for operation. Available in a variety of stylish finishes, controls allow you to adjust steam shower functionality such as duration and temperature. Select the available control with features that best suit your preferences.

We recommend the addition of Mr. Steam's AutoFlush automatic drain system with your MS400E generator. The AutoFlush system drains the generator tank to help prevent lime build-up and ensure the best performance from the unit.

The Mr. Steam MS400E steam bath generator carries a limited lifetime warranty and is fully serviceable. All MS-E Series generators are US and Canadian UL listed and NOM certified for your safety.


  • For steam baths sized from 162 to 257 adjusted cubic feet
  • Available in 240V operation
  • Stainless Steel tank
  • Industrial-grade, serviceable heating element
  • MiniDIN control connections
  • Available Auto Drain automatic draining system
  • Durable electronic components
  • Electronic water-level control system
  • Low-voltage safety control circuits
  • Solid-state circuitry
  • Diagnostic LED Displays
  • Full port drain valve
  • ASME safety valve
  • UL/CUL/NOM/CE Listed
  • 9kW Steam bath generator, 14-1/2"L x 6-3/4"W x 14-3/4"H
  • Installation and operation manual
  • Limited warranty
Model MS 400E
Minimum Adjusted Cubic Feet 162
Maximum Adjusted Cubic Feet 257
Shipping Weight (Lbs.) 30 lbs
Kilowatt Rating (KW) 9kW
Electrical Specifications (refer to Electrical chart)
Water Supply Connection 3/8" NPT
Generator Steam Line Connection 1/2" NPT
Drain Connection 1/2" NPT
Safety Relief Valve Connection 3/4" NPT
Safety Relief Valve PSIG 15 PSIG
Control "Rough In" Cut Out 1"
Generator Control Connection 8-Pin Mini-DIN Connector
Generator Control Cable 30', 8 Conductor, 24 AWG, Shielded Cable
Width 14-1/2"
Depth 6-3/4"
Height 14-3/4"

See general installation guidemanual and specification.
See planning guide, benefits brochure and steam benefits brochure.
See warranty.

Customer Reviews

Be the first to write a review