Kohler 22kW Steam Generator | K-32333 Invigoration 2.0

Kohler K-32333-NA Invigoration 2.0 22kW Steam Generator

Dual 11kW Residential Steam Generator — Covers Up to 634 Cubic Feet

The Kohler K-32333-NA is a 22kW residential steam generator built for medium-sized home steam shower installations. With a dual-generator configuration (2 × 11kW), it delivers consistent, powerful steam output for enclosures up to 634 cubic feet — bringing spa-quality steam performance to your home.

Part of the Kohler Invigoration® 2.0 Series, this generator integrates seamlessly with compatible Kohler digital controls and adapter kits, giving you precise temperature management and a reliable, repeatable steam experience.

Not sure which size you need? Use our Kohler Steam Generator Sizing Guide to find the right generator for your enclosure.

Important: Control kits, adapter kits, steam heads, and installation components are required and sold separately.

▶ Watch: Kohler Invigoration Steam Shower Overview

Who This Is For

The Kohler 22kW steam generator K-32333-NA is the right choice for homeowners and contractors installing a residential steam shower in a medium-sized enclosure up to 634 cubic feet. It steps up from the 18kW model when your room size or material load requires more output, while remaining within the Kohler Invigoration® 2.0 tandem system ecosystem.

Key Features

• 22kW total output via dual-generator configuration (2 × 11kW)
• Designed for steam enclosures up to 634 cubic feet
• Compatible with Kohler Invigoration® Series digital controls and accessories
• Fast steam production with consistent, reliable output
• Insulated stainless steel construction for durability and efficiency
• Designed for installation outside the steam enclosure
• 240V electrical connection required

Compare Kohler Invigoration 2.0 Steam Generators

• K-32332-NA — 18kW | Up to 550 cu ft | Best for smaller steam rooms
• K-32333-NA (This Model) — 22kW | Up to 634 cu ft | Best for medium steam rooms
• K-32334-NA — 26kW | Up to 894 cu ft | Best for medium–large steam rooms
• K-32335-NA — 30kW | Up to 1,000 cu ft | Best for large steam rooms

Specifications

• Model: K-32333-NA
• Total Power: 22kW (2 × 11kW dual-generator)
• Maximum Room Size: Up to 634 cubic feet
• Voltage: 240V
• Installation Location: Outside steam enclosure (required)
• Water Supply Connection: Required
• Construction: Insulated stainless steel

Required Components Sold Separately

• Kohler K-5558 Tandem Control Kit
• Kohler K-5549-K1 Tandem Steam Adapter Kit
• Compatible steam heads and installation accessories

Shipping & Delivery

This product ships free via freight carrier to the contiguous United States. Freight delivery is curbside with a scheduled appointment — the carrier will contact you prior to delivery to arrange a delivery window. Estimated Delivery Time: Most orders arrive within approximately 4–7 business days, including processing and transit time.

Installation Requirements

• Must be installed outside the sealed steam shower enclosure
• Requires a dedicated 240V electrical connection — consult a licensed electrician
• Requires a cold water supply connection
• Professional installation by a licensed plumber or steam shower contractor is strongly recommended
• Follow all manufacturer guidelines and applicable local building codes

Pre-Delivery & Installation Checklist

Review these items with your installer before delivery. Use the model-specific installation manual for technical requirements.

• Site preparation: Have your installer confirm enclosure sizing, site readiness, and a clear route from the delivery point to the installation area.
• Dedicated 240V supply: Have a licensed electrician confirm panel capacity and the required circuit arrangement, breakers, wiring, and grounding for the dual 11kW system before installation.
• Cold-water connection: Have your plumber confirm the cold-water supply connection and required plumbing provisions against the installation manual.
• Generator location: Plan space for both generators outside the steam enclosure; have your installer verify clearances, service access, and permitted piping routes and distances.
• Freight receipt: Arrange for someone to receive the scheduled curbside delivery and plan how to move the shipment to the installation area. Inspect packaging and contents, document visible damage, and report concerns promptly.
• Required accessories: Confirm the separately sold K-5558 Tandem Control Kit, K-5549-K1 Tandem Steam Adapter Kit, compatible steam heads, and installation components are included in your project plan.
• Licensed installer scope: Agree who will handle electrical work, water and steam connections, controls, any required permits, and startup checks. Have licensed professionals verify the installation against Kohler instructions and applicable local codes.

Warranty

This product includes Kohler's full manufacturer warranty. As an authorized Kohler retailer, Prime Regeneration ensures complete warranty coverage is passed through to you at the time of purchase.

Manuals & Documentation

• Specification Sheet
• Installation & Operation Manual
• Warranty Information

Complete Your Steam Shower System

Build out your full Kohler Invigoration® steam shower with compatible generators, controls, and accessories.

• Kohler 18kW Steam Generator
• Kohler 26kW Steam Generator
• Kohler 30kW Steam Generator
• Kohler K-5558 Tandem Control Kit
• Kohler K-5549-K1 Tandem Steam Adapter Kit
• Steam Generator Sizing Guide
• Shop All Kohler Steam Systems

FAQ

What size steam room does the K-32333-NA support?
This generator is rated for steam enclosures up to 634 cubic feet. Room size calculations should account for ceiling height, wall materials, and any glass surfaces. Use our Sizing Guide for help.

How does the 22kW model differ from the 18kW?
The K-32333-NA (22kW) supports enclosures up to 634 cu ft vs. 550 cu ft for the 18kW K-32332-NA. Choose the 22kW if your enclosure is larger, uses heat-absorbing materials like natural stone, or has a higher ceiling.

What electrical requirements does this generator have?
The K-32333-NA requires a dedicated 240V electrical connection. Consult a licensed electrician to confirm your panel and wiring can support this load before installation.

What control kit is required?
The Kohler K-5558 Tandem Control Kit and the Kohler K-5549-K1 Tandem Steam Adapter Kit are both required and sold separately.

Where does the generator need to be installed?
The generator must be installed outside the steam shower enclosure — typically in a nearby mechanical closet or utility space.

Does this ship for free?
Yes — free freight shipping is included to the contiguous United States. The carrier will contact you to schedule a curbside delivery appointment.