Coldture XTREME Outdoor Sauna
- Electric stove
- 4 people
- Up to 186-194°F
- 240V hardwired
A four-to-six-person outdoor sauna with a 9 kW HUUM stove, cedar interior and metal exterior, hardwired on 240 V.
$15,299
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Usability
6.1 out of 10- Insulation: no wall insulation or wall thickness stated
- Searched: SGS (certificate copy) Intertek UL CSA CPSC Health Canada
- Record: SGS (certificate copy), UL 60335-1 / CAN/CSA-C22.2 No. 60335-1 / CAN/CSA E60335-2-53 (heater only), Drop 9kW, Hive mini 9kW, CLIFF 9, STEEL 9 (every HUUM 9 kW heater on the certificate), HUUM Sauna OÜ, Estonia
Better on verificationSun Home Nova 6 traditional sauna$15,799Scores 6.0- Shell: five years on the shell, benches and fixed fixtures
Better on warranty & supportPlunge Sauna StandardThe heater. $12,990Scores 3.0Strengths
- Reaches the full sauna temperature limit
- Large interior with deep benches
- Remote start and scheduling from the app
- Five-year cover on the shell and benches
- Cedar interior with a weatherproof metal exterior
Drawbacks
- Needs a hardwired circuit and an electrician
- One-year warranty on the heater with labour excluded
- No speakers or Bluetooth
- Installation is quoted separately
A big, hot backyard sauna for groups, but the heater warranty is one year
Specs
- TypeTraditional
- HeaterElectric stove
- FormCabin
- PlacementOutdoor
- Seats4 people
- Max Temperature186-194°F
- Min TemperatureNot applicable
- Capacity (Gallons)Not applicable
- ChillerNot applicable
- HeatsNot applicable
- Water CareNot applicable
- Power Supply240V hardwired
- EMF MeasuredNot measured
- CertificationsComponent listing only
- Warranty1 Year
Not published by Coldture: emf claimed.
At a glance
- Bronze tinted door glass
- Austrian-made sauna lights
- Benches 81.5 in long
- Coldture is a company that makes saunas and cold plunges from a one-person barrel plunge to a six-person outdoor sauna.
- Coldture Wellness Inc., a Canadian federal corporation registered at 635 Oster Lane in Concord, Ontario, owns the brand and sells it in the US through coldture.com.
- The company was incorporated in January 2022 as Cold Tribe Wellness Inc. and took its present name in September 2023.
- Its plunge systems are also sold through Costco, and the US Costco listing for the Classic tub and chiller showed no member reviews in November 2026.
- No Coldture store or listing was found on Amazon US in November 2026.
The Coldture XTREME Outdoor Sauna is a four to six-person outdoor sauna with a 9.0 kW HUUM electric heater and stones, built in Canada for permanent installation. Coldture rates it to 110°C (230°F), above the 194°F thermostat limit that applies to sauna heaters in the US.
Its interior measures 81.5 by 64.5 by 82.5 inches, about 251 cubic feet, with 23.5-inch-deep benches. It has knotty western red cedar walls, clear western red cedar benches, a 10 mm bronze tempered glass door with a magnetic closure and double-pane side windows.
The exterior is powder-coated metal roofing and siding with stainless steel bands on composite cradles, and it weighs about 1,400 lb built. It needs a 240 V circuit on a 50 A two-pole breaker installed by a licensed electrician, which is not included.
Integrated ambient lighting, integrated ventilation and HUUM Wi-Fi control with remote start and scheduling come with it.
Questions answered from our data
How much does a home sauna cost?The 81 home saunas we list run from $1,999 to $36,399, with a median of $7,523.
How hot does a sauna get?Of the 81 home saunas we list, 81 state a rated maximum temperature; the most common is 186-194°F (42).
How big is a 2-person sauna?24 of the 81 home saunas we list seat two, as their makers count seats.
Does a sauna need 240 volts?54 of the 81 home saunas we list need a 240 V supply, plugged in or hardwired, as their makers state it.
