Sauna + Plunge · Designer Thermal Suite Designer
$75,000 Estimated total
Thermal Suite Designer, white board-and-batten exterior with red-light interior

Thermal° · Sauna + Plunge · Designer · The Flagship

Thermal Suite Designer.

Sauna, vertical cold plunge, and upgraded finishes in one structure. Hand-built in Utah.

Capacity
4–6 person
Footprint
16’6" × 8’3"
Electrical
240V · 60A
Build time
8–10 weeks

Inside the Designer.

Cedar sauna interior
Sauna interior
Cold plunge in the cedar cabin
Cold plunge
Sauna heater in the cedar cabin
The heater
Red light therapy panel inside the sauna
Red light therapy
Thermal Suite Designer, New Primitive Thermal Suite Designer, New Primitive Thermal Suite Designer, New Primitive Thermal Suite Designer, New Primitive Thermal Suite Designer, New Primitive
Thermal Suite Designer overhead layout render: sauna room with heater and benches on the left, cold plunge room on the right, slatted porch beyond

Layout & specs.


Configuration
Sauna + plunge
Capacity
4–6 adults
Exterior size
16’6" L × 8’3" D × 9’10" H
Electrical
240V · 60A
Customize for your space →
IKI 9 kW heater in cedar interior

IKI 9 kW heater

Traditional Finnish heater.

The IKI Pillar’s deep stone bed delivers soft, even heat, and Wi-Fi start means the room is ready when you are.

Power
9.0 kW · 240V · 50A
Stones
≈ 250 lbs diabase
Control
UKU Wi-Fi · wall + app
Clearance
2" to slat
Black cold plunge tub with matte shower filler in the cedar cabin

Partnered with Cold Life Vertical

Vertical cold plunge.

An upright single-user plunge beside the sauna, chiller and filtration built in, so the contrast loop is a few steps away.

Capacity
≈ 130 gal
Set range
38–55°F
Power
120V · 15A
Footprint
34" × 34" · 43" H
Clear slatted cedar sauna interior

Knotty Cedar

Clear cedar interior.

Raw vertical-grain cedar, floating benches, and integrated LED, sanded smooth and left unsealed so the wood breathes.

Species
Western Red Cedar
Grade
Clear · vertical grain
Finish
Raw · 180 grit
Bench
Floating · hidden fixing
Thermal Suite Designer exterior at golden hour

build quality

Built to last decades.

Engineered timber built to permanent residential standards, with a 25+ year lifetime and kiln-dried cedar interior.

Frame
Engineered timber
Cladding
25+ yr lifetime
Interior
Knotty Cedar
Design life
25+ years
In motion

Mesa · Thermal Suite Designer in the wild

Built for the desert. The mountain. The yard.

The Thermal Suite Designer isn’t a fixed-site product, it’s a kit. Charred Accoya holds up to desert sun. The same envelope lives through Park City snow. The same ritual, anywhere your home is.

Filmed on location · Mesa, UT

Choose your finishes.

Preview finishes live. The estimate updates as you go.

Thermal Suite Designer design preview
Exterior cladding

The face of the suite.

Interior paneling

Inside the sauna cabin.

Sauna Room Decking & Floor
Cold Plunge Room Decking & Floor
Add-ons

Optional. Stack as you like.

Build package

How much of the install we handle.

§ 05 Investment Thermal° · Vol. One · 2026

Pricing and what’s included.

The full breakdown. Configure your finishes above and the estimate updates live.

Thermal Suite Designer · Base 16’6" envelope · 4–6 person sauna · vertical cold · charred exterior
$75,000
IKI 9 kW Pillar heater Wi-Fi remote · UKU controller
Included
Partnered with Cold Life Vertical plunge Integrated chiller · filtration · controls
Included
Upgrades + add-ons Reflects your selections above
$0
Delivery + crane Coordinated with site access · per zip
$6,200 est.
Estimated total · before tax $81,200
Cara and Brody in their Thermal Suite Designer sauna
"Healing isn’t a retreat anymore. It’s Tuesday."

Brody, Thermal Suite Designer owner · Park City, UT Read his story →

Real installs. Real days.

Common questions.

How long to heat the sauna?

The IKI 9 kW heater reaches ~180°F in 35–45 minutes from cold start. With Wi-Fi remote start, you can have the cabin ready by the time you finish dinner.

What electrical do I need on site?

A dedicated 240V · 60A sub-panel with RCD protection. Your local electrician will pull a permit and run a feeder from your main panel to the suite location. We provide the electrical drawings; your GC executes.

What kind of foundation does it need?

A level pad, concrete, stone, or compacted gravel with helical piers. ~136 sq ft footprint. Foundation requirements vary by region; we provide the spec and your GC coordinates.

Will it work in my climate?

Yes. We deliver across the lower 48. The charred Accoya envelope is weather-resistant in everything from desert sun to snow load. Cold zones may add a winter cover for the plunge inlet; we’ll spec it.

Can I move it if I move?

Yes. The suite is factory-built and crane-set, it can be lifted, transported, and re-set on a new pad. Leaving no trace. We’ve done it.

What happens after I reserve?

Within 2 business days, Cole or Shane will reach out personally, no automation, to schedule a planning call. Site review, design selections, build slot scheduling. The $450 is fully refundable for 14 days and applies to your production deposit if you proceed.

Reserve your build slot.

$450 today. A real conversation within 2 business days. Production starts after design approval, not before.

Not sure if this is the right kit? Take the Quiz →