Custom Stainless Steel Hot Tubs
OUR HOT TUBS.
Precision Hydrotherapy.
Sub-Zero Insulation.
Built to Last a Lifetime.
Elevate your relaxation with custom-crafted 316L marine-grade stainless steel hot tubs engineered for unyielding durability, extreme thermal efficiency, and ergonomic comfort.
- Ultra Lightweight
- 50+ Years Lifespan
- 25 Year Structural Warranty
MORE INFO.
Why Custom Stainless Steel Hot Tubs Outperforms Acrylic & Concrete Hot Tubs
Mass-market acrylic spas blister under the sun, and tiled concrete tubs crack during freeze-thaw cycles. A Tesoro® custom stainless steel hot tub delivers an elevated soaking experience built on superior materials science:
Superior Hygiene & Biofilm Elimination
- Acrylic shells develop micro-fissures and concrete grout lines trap bacteria, algae, and persistent biofilm. Non-porous 316L marine-grade stainless steel creates an ultra-smooth, naturally hygienic surface that cleans effortlessly and drastically reduces chemical demand.
Alpine-Grade Heat Retention (R-15 Thermal Envelope)
- Standby heat loss is the single largest operating expense for hot tub owners in cold climates. Every Tesoro® hot tub is encased in a minimum R-15 high-density closed-cell spray foam barrier and fitted with a lockable thermal cover, keeping water piping hot even in sub-zero winter conditions.
Structural Integrity That Never Cracks or Fades
- Unlike acrylic spas that fade under harsh UV rays or concrete that cracks in freezing soil, 316L stainless steel possesses high tensile strength and thermal flexibility. It will never blister, delaminate, peel, or leak—backed by our 25-Year Structural Warranty.
BUILD WHAT YOU WANT.
Precision Ergonomics & Hydrotherapy Customization
Every body is different. Rather than rigid, pre-molded acrylic seats, Tesoro® hot tubs feature custom internal layouts tailored to your exact relaxation preferences:
Tailored Seating Options
Choose from zero-gravity loungers, deep captain's chairs with armrests, full-perimeter bench seating, or elevated cool-down seats.
Targeted Jet Placement
Position 316L stainless steel massage jets (6 to 20+ jets) precisely where you need relief—targeting cervical spine, lumbar region, hamstrings, and foot reflexology zones.
Custom Dimensions
Built to fit your space, from intimiate 2-person soaking tubs (6'x6') to spacious 12-person entertaining spas (8'x15').
ENGINEERING.
Stainless Steel Hot Tubs -Engineering Specifications for Architects & Builders
Design a hot tub that is built to last, and built to impress with our stainless steel hot tub line.
Marine-Grade Material
Handcrafted exclusively with 316 / 316L marine-grade stainless steel to deliver maximum protection against corrosion, chemical exposure, and intense climate shifts.
Seamless Vessel Construction
Built with continuous seam-welded steel for a 100% leak-proof structural shell, fully pressure-tested before leaving the factory floor.
Thermal Envelope
Fully encased in a minimum R-15 high-density spray foam insulation layer to maximize heat retention and structural rigidity.
Flexible Sizing & Footprints
Available in standard dimensions ranging from (6'x6') up to (8'x15'), as well as fully bespoke depth and architectural contour configurations.
Sanitation Compatibility
Precision-engineered to pair seamlessly with Hydroxyl Water Treatment, UV-C purification, Ozone systems, and low-chlorine setups.
Coping & Surround Integration
Designed for flexible deck finishes, including flush-mounted stone coping, teak wood surrounds, or custom bullnose edging.
THE PROCESS.
Stainless Steel Hot Tubs
Turnkey Off-Site Fabrication & Installation
CAD Design
We configure your exact dimensions, seating layouts, and jet locations in 3D.
Factory Fabrication
Hand-welded, fully insulated, and pressure-tested under rigorous factory quality controls.
Delivery & Placement
Lifted into position via crane or telehandler directly onto your patio, deck, or rooftop pad.
Plug & Soak
Connect electrical and water lines—your hot tub is ready to fill and heat within hours.
OUR HOT TUBS.
Our Stainless Steel Hot Tub Projects
Interested in seeing more of our hot tub projects? Click below!
WHO WE WORK WITH.
From Homeowners, to Architects & Designers
With Homeowners
We work one on one with you to ensure you are getting the stainless steel hot tub that fits your design and space.
With Architects, Builders & Designers
We provide design specifications so that you can ensure our stainless steel hot tub fits the space you are designing for your clients.
QUESTIONS.
Stainless Steel Hot Tub | FAQs
Can't find your answer? Feel free to reach out and we will help you out!
How much energy does a stainless steel hot tub consume in freezing winter weather?
Thanks to our minimum R-15 closed-cell insulation envelope and tight-fitting thermal cover, standby heat loss is kept exceptionally low. Once heated, the thermal mass of the insulated steel shell retains heat efficiently, minimizing heater cycle times during winter drops.
Can a custom stainless hot tub be installed on an upper-level deck or penthouse terrace?
Yes. Stainless steel hot tubs weigh up to 70% less than concrete spas, making them the ideal choice for elevated decks, rooftop penthouses, and indoor spa rooms where structural floor weight is a factor.
How do I clean and maintain the stainless steel finish?
Because 316L stainless steel is non-porous, organic matter and biofilm cannot stick to the walls. Maintenance simply requires wiping down the waterline with a soft microfiber cloth and rinsing your filtration media as needed.
LETS GET STARTED.
Let's Get Started On Your Stainless Steel Hot Tub Design
Get in touch with our engineering and design team today to begin planning your personalized stainless steel hot tub.