A commercial steam room works harder than any residential steam shower. Spas, health clubs, resorts, and multi-unit properties need steam that runs session after session, day after day, with minimal downtime. The ThermaSol PowerPak Series III is built for exactly that kind of environment. This guide covers the four PowerPak models, how to choose the right size, electrical requirements, key features, and everything included in the box.
The four PowerPak Series III models
The PowerPak lineup comes down to two choices: room size and voltage. The 18 kW models are designed for steam rooms under 1,000 cubic feet, and the 24 kW models handle rooms of 1,000 cubic feet and larger. Each is available in 208/240V or 480V, all three-phase.
How to choose the right size
ThermaSol sizes the PowerPak by total room volume. Multiply the steam room's length by width by height to get cubic feet:
- Under 1,000 cubic feet — choose an 18 kW PP18SR model.
- 1,000 cubic feet and over — choose a 24 kW PP24LR model.
Then match the voltage — 208/240V or 480V — to the building's three-phase electrical service. Not sure which model fits your project? Contact our team for help with commercial sizing.
Example layout: the PowerPak installs outside the steam room in an adjacent space. Image courtesy of ThermaSol.
Electrical requirements
All PowerPak Series III models require three-phase power and are hardwired. ThermaSol's installation instructions list the following for each model:
Electrical note: the PowerPak uses four conductor wires — three phase conductors and a ground. Installation should be performed by a licensed electrician following ThermaSol's installation instructions and local code.
Built for high-use environments
- Industrial-grade stainless steel tank — built for durability in demanding commercial settings.
- Split tank design — enhances efficiency and longevity.
- Incoloy heating elements — resist corrosion and wear.
- Self-cleaning system — uses the steam room's drain, so no additional drain line is needed.
- Front and top access — streamlines servicing.
- CAN-bus technology — for dependable performance and safety.
- Flexible placement — installs up to 50 feet from the steam room.
- Delivered fully assembled — for quicker setup.
Control features
- Weekly scheduling — set time and temperature for each day of the week to match operating hours.
- Programmable PowerFlush — ThermaSol's inner-tank cleaning system helps protect the generator from mineral buildup.
- Standby mode — keeps the generator ready between sessions.
- Digital on/off timer — an outside-the-room control is included.
- Diagnostic error codes — display specific information to speed up troubleshooting.
Specifications (all models)
What is included
- PowerPak Series III generator with built-in control
- Polished chrome steamhead
- Digital timer and M8 cable
- Temperature sensor and 50-foot lead wire
Frequently asked questions
Is the PowerPak for residential use?
The PowerPak Series III is designed for commercial steam rooms in spas, health clubs, and resorts. For home steam showers, explore our residential steam generators.
Does the PowerPak need a separate drain line?
No. The self-cleaning system uses the steam room's drain.
How far from the steam room can it be installed?
Up to 50 feet.
Which model do I need for a 1,000 cubic foot room?
Rooms of 1,000 cubic feet and larger call for a 24 kW PP24LR model. Choose the 240V or 480V version to match your three-phase service.
What warranty does the PowerPak have?
ThermaSol's 18-month parts and labor warranty.
Why order from TheSteamStore.com?
- Authorized ThermaSol dealer — all four PowerPak Series III models.
- Commercial sizing help — call us for help matching the right model to your room and electrical service.
- Free shipping — on all orders over $199 (restrictions apply).
Planning a commercial steam room? Read how a steam shower works, or contact our team at 877-881-5501.