
Product Information
Achieve unmatched steam performance with the ThermaSol DS-400 Day Spa Series 16kW Steam Bath Generator,
designed for day spas and hotels.
This powerful system efficiently operates up to four steam enclosures, supporting a total of 1,600
adjusted cubic feet (ACF).
Constructed with durable stainless steel, featuring a split-tank design for extended longevity, and an
advanced steam distribution module.



Product Features
The ThermaSol DS-400 Day Spa Series 16kW Steam Generator is engineered for day spas and hotels, delivering powerful and reliable steam performance.
Designed with a non-pressurized vessel and an industrial-grade, serviceable heating element, ensuring consistent and efficient steam generation .
Designed for flexible installation, the generator can be placed up to 50 feet from the steam rooms and comes with a complete hardware kit.

ThermaSol DS-400 Day Spa Series
Powerful 16kW Steam Output:
Designed for day spas and hotels, the DS-400 delivers a high-capacity steam experience for up to four
steam enclosures.
Robust Stainless Steel Construction:
Built with stainless steel inside and out, the split-tank design enhances durability, corrosion
resistance, and long-term performance.
Flexible Multi-Room Steam Delivery:
The integrated steam distribution module provides the flexibility to deliver steam independently or
simultaneously.
Easy Installation & Reliable Operation:
Featuring a non-pressurized vessel, integral drain pan with 3/4” NPT fitting, and remote installation
capability.
High-Capacity Steam Performance for Spas & Resorts
The ThermaSol DS-400 Day Spa Series 16kW Steam Bath Generator is designed to meet the demands of day spas and hotels, offering powerful, efficient, and multi-room steam distribution. Constructed with premium materials and advanced engineering, this generator delivers long-lasting, maintenance-friendly performance.

16kW Industrial-Grade Heating Element
Built for high-demand commercial spa environments, the powerful heating element ensures rapid and consistent steam output across multiple enclosures.

Advanced Multi-Room Steam Distribution
The integrated steam distribution module enables steam delivery to two, three, or four enclosures, allowing for independent or simultaneous operation.

Heavy-Duty Stainless Steel Construction
Built with stainless steel inside and out, ensuring corrosion resistance, durability, and long-lasting performance in high-moisture environments.

Flexible Remote Installation
Designed for convenient placement, the generator can be installed up to 50 feet away from the steam rooms, ensuring ease of access and hassle-free maintenance.
What’s Included?
- 1 Generator
- In-Room Controls (2, 3, or 4)
- Commercial Steamheads (2, 3, or 4)
- Installation Manual
- Limited Warranty

About ThermaSol
ThermaSol, a US-based pioneer in residential steam showers, has been innovating spa equipment since 1958.
Established by David Altman, the company has been proudly family-operated for three generations and became part of the Harvia family in 2024.
Offering smart showers, steam and sauna systems, and advanced steamheads, ThermaSol is committed to delivering safe, reliable, and eco-friendly multi-sensory spa experiences.


Why Choose Us?
Choose Peak Primal Wellness for a personalized, community-driven approach to health. We prioritize your well-being with high-quality products, tailored solutions, and 24/7 support.
As a family-owned business, we build lasting relationships, offering authentic, effective solutions to help you achieve your wellness goals.
Join our thriving community and embark on a journey toward optimal health with passionate professionals who genuinely care. At Peak Primal Wellness, you're not just a customer—you're family.
Specifications
Model | DS-400 |
---|---|
Minimum Adjusted Cubic Feet | 575 |
Maximum Adjusted Cubic Feet | 1600 |
Kilowatt Rating (kW) | 16 kW |
Shipping Weight (lbs) | 46 lbs |
Water Supply Connection | 3/8" NPT |
Generator Steam Line Connection | 1/2" NPT |
Steam Head Connection | 1/2" NPT |
Safety Relief Valve Connection | 3/4" NPT |
Safety Relief Valve PSIG | 15 PSIG |
Control "Rough In" Cut Out | 1-1/16" |
Generator Control Connection | 6 Pin, Snap-In Connector |
Generator Control Cable | 50', 6 Conductor, 22 AWG, Shielded Cable |
Width | 18-3/4" |
Depth | 13-3/4" |
Height | 16" |
Warranty & Returns
Return Policy
To request a return or refund, customers can use our contact form, email info@peakprimalwellness.com, or phone – (877) 689-4898 . Once the product is inspected and confirmed to be in brand new condition, we will initiate the refund, which typically takes 5–7 business days to post back to the original payment method. Refunds can be applied via the customer’s preferred method, including card or bank transfer. Shipping instructions and the return address will be provided upon contacting customer service. Please include photos if the product arrives damaged. Click here to view our complete return policy for more details.
Shipping Policy
Customers may contact us by phone or email anytime to inquire about the status of their order. While we may not always have a tracking link available before the order ships, we are happy to check its current status for you. If an item is never received, please contact us immediately. We will promptly file a claim on your behalf and ship a replacement to ensure you receive your product as soon as possible. Click here to view our complete Shipping policy for more details.
Frequently Asked Questions
How many steam enclosures can the DS-400 support?

The ThermaSol DS-400 is designed to efficiently power two, three, or four steam enclosures simultaneously, ensuring a consistent and luxurious steam experience.
What is the maximum capacity of the DS-400?

The DS-400 steam generator is built to support steam enclosures with a total volume of up to 1,600 adjusted cubic feet (ACF), making it ideal for larger spas and hotel environments.
Can the DS-400 be installed away from the steam enclosures?

Yes, the DS-400 can be installed up to 50 feet away from the steam rooms, offering greater flexibility in placement while maintaining peak performance.
What materials are used in the construction of the DS-400?

The DS-400 is constructed with stainless steel inside and out, incorporating a split-tank design and corrosion-resistant electronic components to ensure durability and longevity.
Does the DS-400 require a separate drain pan?

No, the DS-400 includes an integral drain pan with a 3/4” NPT fitting, simplifying the installation process while ensuring safe and efficient drainage.