Details
- Main Material:
- Finnish spruce wood / Canadian hemlock wood, safety tempered glass, door seal strip
- Roof & Waterproof:
- Asphalt shingle roof, ridge cover shingles, top cover, integrated waterproof layer, rain & humidity & mold resistant
- Heating System:
- 4-12 carbon infrared panels, tourmaline stone foot heater, roof vent & oxygen bar, max temp 60°C /139°F
- Lighting:
- 7-color chromotherapy light, surrounding LED light strips
- Control & Entertainment:
- LCD control panel, dual built-in Bluetooth speakers, LED reading light, placement rack, 2 windows
- Note:
- Dedicated outlet required; longer preheating time in winter
Key Features
- 1. 4-5 Person Outdoor Far Infrared Sauna
- 2. FIR Ceramic Heaters Built for Outdoor Durability
- 3. Waterproof Solid Hemlock with Tongue & Groove Assembly
- 4. Shingled Roof and Narrow Planks for Better Heat Insulation
- 5. Digital Control Panel with Custom Temperature & Timer Settings
Dimensions
- 1499 × 610 × 1245 × 254 mm
Warranty & Support
Honest Warranty & Support
Every ONSONSPA product is backed by a clear, honest warranty. If anything goes wrong, our U.S.-based support team in Bellevue, Washington is here to help.
- Warranty coverage: Clear terms on your product's shell, components, and parts.
- Replacement parts: Genuine parts available for your model.
- Repair process: Simple, step-by-step support from our team.
- Contact us: Call 425 574 0734 or email support@onsonspa.com — we respond within 1 business day.
Shipping & Warehouses
We ship from multiple warehouses across the United States for fast, reliable delivery.
- 26597 San Bernardino Ave, Redlands, CA 92374
- 2801 Route 130, Unit 3, North Brunswick, NJ 08902
- 200 Metcalf Rd Extension, Suite 200, Forest Park, GA 30297
- 18220 80th Place South, Kent, WA 98032
Why ONSONSPA
Q&A
Frequently Asked Questions
Where can I install my hot tub / swim spa / cold plunge?
Place it on a level, load-bearing surface such as a concrete pad or reinforced deck — never directly on grass or sand. Confirm your site's weight capacity before delivery.
What power supply does it need?
Most hot tubs and swim spas require a dedicated 220V circuit; some smaller plug-and-play models run on standard 110V. Check the power spec for your specific model before ordering.
Can I use it outdoors in winter?
Yes — well-insulated units are built for year-round outdoor use. Keep the cover on when not in use to retain heat and reduce running costs.
How do I keep the water clean?
Follow the included maintenance routine: sanitize regularly, keep pH balanced, and clean/replace filters on schedule. Full water-care guidance ships with the unit.
How many people does the model I'm looking at seat?
Capacity is listed per model on the product page — units in this range seat from 2-4 up to 5-7+ people depending on the model you choose.
Delivery, warranty and returns for large units?
24-month warranty included. U.S. delivery: oversized freight is priced at checkout based on your location. 30-day returns apply, with return shipping possible on oversized items.
