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Mr. Steam MS400E MS-E Series 9kW Steam Shower Generator (240V/1PH)


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Warranty Included

Original price $3,575.00
Original price $3,575.00 - Original price $3,575.00
Original price $3,575.00
Save $1,072.50 Save $0.00
Current price $2,502.50
$2,502.50 - $2,765.00
Current price $2,502.50

Item Status : Limited Stock

Leaves Manufacturer's Warehouse in 2-3 Business Days. ETA Delivery 5-7 days. Easy 30 Day Returns.

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  • High Quality U.S Made Products
  • No Sale Tax (Exclusions Apply)
  • Free & Fast Delivery
  • Manufacturer Warranty Included

Take a Deeper Look

The Mr. Steam MS400E 9kW home steam shower generator is an ideal choice for residential steam rooms, designed to accommodate spaces ranging from 162 to 257 adjusted cubic feet (ACF). 

Compact Design for Concealed Installation 

The MS400E is compact in size, allowing for convenient installation in vanities, closets, cabinets, and similar spaces.

This design ensures the generator remains discreetly out of sight while providing the ultimate steam bath experience.

MS400E Steam Shower Generator Concealed

Advanced Technology for Optimal Performance 

Equipped with a stainless-steel tank, industrial-grade heating elements, and a precision temperature probe, the MS400E ensures safe, reliable, and clean operation.

The unit features an advanced microprocessor operating platform and intelligent steam bath technology, making it a perfect fit for residential steam bathing applications.

MS400E Steam Shower Generator Stainless Steel

Customizable Controls for Personalized Experience 

To enhance your steam shower experience, the MS400E requires a Mr. Steam control or control package, available in various stylish finishes.

These controls allow you to adjust steam shower functionality, including duration and temperature, catering to your preferences.

Aromatherapy and Chromotherapy Integration 

Designed with versatility in mind, the MS400E allows for easy installation of steam shower accessories such as aromatherapy and chromotherapy, to bring you a spa-like experience.

Aromatherapy Mr. Steam

AutoFlush System for Maintenance

For optimal performance and longevity, we recommend pairing the MS400E with Mr. Steam's AutoFlush automatic drain system.

This system efficiently drains the generator tank, preventing lime build-up and ensuring peak performance over time.

Mr. Steam generators are expertly designed, constructed, and crafted in the USA for your ultimate steam bathing experience.

  • Suitable Size Range: For steam baths sized from 162 to 257 ACF
  • Voltage Options: Available in 240V and 208V operation
  • Durable Construction: Stainless steel tank and industrial-grade, serviceable heating element
  • Easy Setup: MiniDIN control connections for convenient installation
  • Safety Features: Electronic water-level control system and low-voltage safety control circuits
  • User-Friendly Interface: Diagnostic LED displays for easy and intuitive operation
  • Safety Assurance: ASME safety valve and full port drain valve for added safety
  • International Compliance: UL/CUL/NOM/CE listed for adherence to international standards


  • 9kW Steam bath generator (14-1/2"L x 6-3/4"W x 14-3/4"H)
  • Installation and operation manual
  • Limited Lifetime Warranty (US & Canada)
  • 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"

Mr Steam MS400EC1 Quick Setup Guide

Mr Steam MS400EC1 Installation, Operation and Maintenance Manual

Mr Steam MS400EC1 Technical Specifications


Rest assured with the MS400E's limited lifetime warranty and full serviceability. All MS-E Series generators are US and Canadian UL-listed and NOM certified, adhering to rigorous safety standards.

Warranty: Limited Lifetime Warranty (US & Canada)

Thank you for selecting MrSteam! Here, you can access the warranty for your MrSteam product and also register the warranty for your purchase.

MS: To register your MrSteam product, just fill out the form on this page, and you'll receive confirmation once it's submitted.

To get a copy of the warranty, click on the relevant MrSteam product category:

Rest assured, all your information will be handled with the utmost confidentiality. Thank you!

Words From Our Happy Customers

Meet Our Experts

Meet Our Experts

Need help choosing the right products for your needs? Our team of highly trained experts has the knowledge and passion to help. Just pick up the phone and give us a ring. Or let's converse via live chat. We love assisting and lending a hand (or an ear).

Other shoppers asked

How do I size my steam shower generator?

Use Mr. Steam's Virtual Spa System at for a step-by-step guide based on your shower enclosure dimensions and finish materials.

Where can I find the Smart Sizing tool for MrSteam Residential Steam Shower generators?

Visit and scroll down to find the Smart Sizing tool.

Where can I find the Smart Sizing tool for MrSteam CU Commercial Steam room generators?

Go to and find the Commercial Smart Sizing tool just above the Digital 1 Control Package.

Do MrSteam Steam Shower Systems work with smart home and home automation systems?

Explore integration possibilities with HomeWizard System at for a seamless connection with your Home Automation system.

UPS Ground Free Delivery

Direct to your door 2-7 business days or less

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Easy Returns

Hassle-free returns on all orders 30 days or less

High-Quality Products

Nothing is more important to us than the quality of our products. Each of the manufacturers we work with have been vetted for quality, and we have personally visited manufacturing facilities to ensure high-quality production practices.

We Operate in the USA

Golden Age Hub services the 48 contiguous united states with high-quality luxury products. Our staff is entirely US-Based and our equipment ships directly out of warehouses on US soil.

Easy Refunds & Returns

If your equipment isn’t what you expected, we make refunds and returns quick and easy. Just email and we’ll take care of you from there.

Full Refund Policy

Fast, Safe Shipping

Orders from Golden Age Hub always ship with recognized LTL Freight Companies. We strive to ensure your equipment gets to you quickly, safely, and with no interruptions.

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