1. Important Safety Information
- Read all instructions before using the steam sauna.
- Do not add essential oils or other substances directly into the steam generator's water reservoir. Use the designated essential oil box.
- Ensure the steam generator is placed on a stable, flat surface.
- Do not use the sauna tent on carpet or hardwood floors without a waterproof mat underneath to prevent potential water damage from condensation or spills.
- Keep children and pets away from the steam sauna during operation.
- Always unplug the steam generator when not in use or before cleaning.
- The steam generator features automatic power-off protection for safety.
2. Product Overview
The COSVALVE Portable Steam Sauna provides a personal spa experience at home. It features a durable, insulated tent and a powerful 4L, 1600W steam generator for efficient heating.

Image: The COSVALVE Portable Steam Sauna tent with its dimensions (35.45"L x 35.45"W x 70.87"H) and the included folding chair.
Key Features:
- Super Thick Fabric & Heat Preservation: Made of high-quality 100g ultrasonic pressed cotton fabric for excellent insulation and sealing.
- 5-Minute Fast Heating: 4L, 1600W steam generator quickly fills the tent with steam.
- Spacious Design: Tent size 35.45"L x 35.45"W x 70.87"H, suitable for individuals 5' - 6.6' tall.
- User-Friendly Details: Includes an external storage bag, two-way zippers, see-through windows, a towel hook, and a folding chair (15.35"x15.35"x25.6", bears 100kg).

Image: Close-up of the sauna tent highlighting features like the double zipper, reinforced support, external storage pocket, towel hook, and the quilted ultrasonic pressed cotton fabric.
3. Setup Instructions
Follow these steps to assemble your COSVALVE Portable Steam Sauna.
3.1 Frame Assembly
- Unpack all components: sauna tent, support poles (labeled B), connectors, steam generator, hoses, essential oil box, remote control, and folding chair.
- Connect the support poles using the provided connectors to form the base and vertical structure of the tent. Ensure all connections are secure.
- Once the frame is assembled, carefully drape the sauna tent fabric over the frame. The one-piece zipper design facilitates easy installation.

Image: Visual guide demonstrating the six steps to assemble the metal frame for the sauna tent.
3.2 Steam Generator Connection
- Locate the small hole at the bottom side of the sauna tent. Insert the white valve through this hole, ensuring one rubber piece is on each side to secure it.
- Connect the long flexible hose to the steam generator unit.
- Connect the other end of the long flexible hose to the white valve on the sauna tent.
- Attach the small hose to the essential oil box. This box is designed to hold essential oils or herbs, allowing the steam to diffuse their aroma without direct contact with the heating element.
Video: A detailed demonstration of assembling the sauna tent frame, attaching the fabric, connecting the steam generator hoses, and preparing the essential oil box.
4. Operating Instructions
Once assembled, follow these steps to operate your steam sauna.
- Fill Water Reservoir: Remove the lid from the steam generator. Fill the stainless steel reservoir with water, ensuring not to exceed the 4L maximum fill line.
- Secure Lid: Place the lid back onto the steam generator and turn it to lock it securely. Ensure the hose is not kinked.
- Power On: Plug the steam generator into a 110V/60HZ power outlet. Press the power button on the unit or use the remote control.
- Set Time and Steam Level: Use the controls to set your desired session time (up to 95 minutes) and steam level (1 to 16, with 16 being the maximum temperature of 140°F/60°C).
- Preheat: Allow a few minutes for the steam generator to preheat and produce steam. The tent will begin to fill with steam.
- Enter Sauna: Once sufficient steam is generated, enter the sauna tent and close the zippers. You can use the included folding chair for comfort.
- Essential Oils/Herbs: If desired, place essential oils or herbs into the essential oil box. The steam will pass through the box, diffusing the aroma into the tent.

Image: Illustration demonstrating the rapid heating capability of the sauna, reaching approximately 140°F (60°C).

Image: A person enjoying a steam session inside the sauna tent, emphasizing the spacious interior and the importance of hydration.
5. Maintenance and Care
Proper maintenance ensures the longevity and optimal performance of your steam sauna.
- Cleaning the Tent: After each use, wipe down the interior walls and plastic windows of the tent with a clean, damp cloth. Allow the tent to air dry completely before folding and storing.
- Draining the Steam Generator: Always drain any remaining water from the steam generator after each use. This prevents mineral buildup and extends the life of the unit.
- Essential Oil Box: Clean the essential oil box regularly to prevent residue buildup.
- Storage: When not in use, disassemble the tent and store all components in a dry, cool place.
6. Troubleshooting
If you encounter any issues with your steam sauna, refer to the following common solutions:
- Insufficient Heat/Steam:
- Ensure the water reservoir is filled to the appropriate level (not below min or above max).
- Verify the steam level setting is adequate for your preference (max is 16).
- Allow sufficient preheating time (approximately 5-8 minutes).
- Check that all hoses are securely connected and free of kinks.
- Water Leakage/Seepage:
- Ensure the valve at the bottom of the tent is properly installed and sealed.
- Always use a waterproof mat or towel underneath the sauna tent, especially on sensitive flooring, to catch any condensation or minor spills.
- Steam Generator Not Turning On:
- Check if the power cord is securely plugged into both the unit and the wall outlet.
- Verify the power outlet is functional.
- Ensure the water level is above the minimum mark, as some units have low-water cutoff safety features.
7. Specifications
| Feature | Specification |
|---|---|
| Brand | COSVALVE |
| Model Name | Saunas (Model Number: 901300) |
| Product Dimensions | 35.45"L x 35.45"W x 70.87"H |
| Material | 100g Thick Cotton |
| Steam Generator Capacity | 4 Liters |
| Power | 1600W |
| Voltage/Frequency | 110V/60HZ |
| Max Temperature | 140°F (60°C) |
| Max Time Setting | 95 minutes |
| Seating Capacity | 1 Person |
| Item Weight | 18.16 pounds (8.26 Kilograms) |
| Assembly Required | Yes |
8. Warranty and Support
For any questions, concerns, or support regarding your COSVALVE Portable Steam Sauna, please contact our customer service. We are committed to providing assistance and will respond within 24 hours.
Please refer to your purchase documentation for specific warranty details.