Steamist SMP-12

SM Plus Series 12kW Steam Bath Generator


The Steamist SMP-12 is a 12-kilowatt steam bath generator engineered for home steam baths from 451 to 550 adjusted cubic feet (ACF).

Required operating control sold separately.

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The SMP-12 is a 12-kilowatt steam bath generator from the Steamist SM Plus series engineered for home steam rooms from 451 to 550 adjusted cubic feet (ACF). All SM Plus generators are designed to provide homeowners with pleasant and consistent steam bathing experiences.

Made in the USA of durable and corrosion-resistant stainless steel, the Steamist SMP-12 provides years of reliable and efficient operation. The SMP-12 steam generator is equipped with industrial-grade parts for worry-free performance. The SMP12 features SteadySteam technology to maintain the user's temperature preferences each bathing session.

The compact design of the generator allows the unit to be installed conveniently out of sight. Typical installation locations include vanities, closets, insulated attics, and basements.

The Steamist SMP-12 has a 12-kilowatt power rating. The generator is available in 208V/240V single-phase (PH) configurations and 208V, three-phase (PH) configurations.

Select the available Steamist operating control option with features that best suit your bathing preferences. A Steamist control or control package is required for operation and is available in a variety of luxurious finishes.

We highly recommend the Steamist Auto Drain Valve to help prevent harmful mineral buildup on the heating elements and reservoir of the generator. The drain valve automatically drains the steam shower system after the water cools. For added convenience, the Auto Drain may be used with the available Steamist Generator Drain Pan.

The Steamist SMP12 carries a limited lifetime warranty and is fully serviceable. All Steamist SM-Plus residential steam shower generators are UL and CUL listed for unmatched quality and safety. Steamist SM-Plus generators are available in a variety of power ratings to best suit your bathing needs.

SteamSaunaBath is proud to be an authorized Steamist partner and offer the full line of Steamist generators.

SteamSaunaBath guarantees the lowest price.  If you see a lower price advertised for this item elsewhere, give us a call!

  • For steam baths sized from 451 to 550 adjusted cubic feet
  • Available in 240V and 208V operation
  • Stainless Steel Construction
  • SteadySteam technology with 2-stage, industrial grade heating element
  • Modular "snap-in" control connections
  • Durable electronic components
  • Electronic water-level control system
  • Low voltage safety control circuits
  • Solid-state circuitry
  • Available Auto Drain automatic draining system
  • Operates with inside/outside shower, on/off, time/temperature controls
  • Diagnostic LED Displays
  • Full port drain valve
  • ASME safety valve
  • UL 499
  • UL/CUL Listed
  • City of LA - Approved
  • City of New York - M.E.A. Approved
  • 12.0KW Steam bath generator, 17.75"L x 7.5"W x 15.5"H
  • 6-pin, 6-wire control cable, 35' long with "snap-in" connectors
  • Installation and operation manual
  • Limited warranty
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Model SMP-12
Minimum Adjusted Cubic Feet 451
Maximum Adjusted Cubic Feet 550
Shipping Weight 41 lbs
Kilowatt Rating 12KW
Water Supply Connection 3/8" Compression Connection
Generator Steam Line Connection 3/4" NPT
Steam Head Connection 3/4" NPT
Drain Connection 1/2" NPT
Safety Relief Valve Connection 3/4" NPT
Safety Relief Valve 8 PSIG
Control "Rough In" Cut Out 1-1/2" Diameter
Generator Control Connection 6-Pin, Snap-In Connector
Generator Control Cable 25', 6-Conductor, 22 AWG, Shielded Cable
Width 17-3/4"
Depth 7-1/2"
Height 15-1/2"
Clearance Width 23-3/4" (30-3/4" w/ Auto Drain)
Clearance Depth 19-1/2"
Clearance Height 22"
Required for Operation

The Steamist 550 is Steamist’s most advanced digital control system. Designed for use with all TSG or SM Plus steam generators, the Steamist 550 can operate with all Total Sense Spa options— AromaSense, ChromaSense, AudioSense, and ShowerSense.

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The 450 control is compatible with Steamist TSG or SM Plus steam generators, and can operate all Total Sense™ Spa Options.

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Designed for use with the TSG or SMP steam generators, the Steamist 250 steam shower control package is programmable for two user settings of temperature and duration.

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