Details
- - Capacity:
- 4–5 person outdoor far infrared sauna
- - Construction Material:
- Solid Canadian Hemlock wood with tongue & groove assembly; narrow wood planks for better heat insulation; waterproof wood construction; natural stained exterior & smooth sanded interior; shingled roof included
- - Heating System:
- FIR far infrared ceramic heaters (higher outdoor durability and longer service life than carbon heaters)
- - Control System:
- Latest digital control panel, supports customized temperature and timer settings, real-time temperature display
- - Voltage & Power:
- 220V, 2800W, 30 AMP dedicated circuit; equipped with dryer-type connection plug
- - Product Dimensions:
- Overall height 84.6”; Wall panel sizes – back panel: 59.1” (2 pcs), window side panel: 31.5” (2 pcs), door front panel: 37.4”
- - Net Weight:
- 529 lbs
- - Assembly:
- Partially pre-assembled; requires 2 people, basic tools (screwdriver, ladder) and approximately 1 hour for full installation
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.
