A barrel ice bath finished in Thermo New Zealand Knotless Spruce — a clean, uniform timber with a smooth grain and no visible knots. The heat-treated spruce provides enhanced dimensional stability and moisture resistance compared to untreated softwoods, making it a durable choice for Thailand's climate.

Inside, the same 304 stainless steel basin found throughout the range — non-porous, corrosion-resistant, and easy to clean. The Knotless Spruce exterior has a lighter, more even tone than cedar, giving the barrel a clean Scandinavian aesthetic.

At 350–450 litres, it's a compact barrel with comfortable seated immersion. The smaller volume means faster cooling times and less water to maintain. Pair with any Sisu chiller unit or use ice manually.

• 304 stainless steel interior — hygienic, corrosion-resistant, easy to clean
• Thermo New Zealand Knotless Spruce exterior — heat-treated for stability and moisture resistance
• Clean, knot-free timber surface with even grain
• 350–450 litre recommended capacity (500 litres full)
• Barrel profile — compact cylindrical footprint
• Compatible with all Sisu chiller units (1.0HP–2.0HP)
• Insulated lid included for temperature retention and debris protection
• Commercial grade — suitable for gyms, spas, hotels, and homes
• WiFi app control available via compatible chiller (iOS/Android)
• Certified to ETL, CE, SAA, FCC, and RCM standards

• Electrical Components: 1 year coverage. Replacement unit delivered to your location.
• Structural: 1 year coverage.
• (Coverage excludes normal wear, unauthorised modifications, or accidental damage.)

Delivery

• Free delivery anywhere in Thailand. Ships within 7-10 business days.

Installation

• 1. Position the unit on a flat, level surface near a power outlet
• 2. Ensure adequate ventilation around the unit for heat dissipation
• 3. Fill with clean water to the indicated line
• 4. Plug into a grounded 220V outlet
• 5. Power on and set the target temperature via the control panel or app
• 6. Allow 12-24 hours for initial cool-down to the target temperature
• 7. Fit an insulated cover when not in use
• Note: Unit requires approximately 50cm clearance on all sides for airflow. Indoor installation is recommended for optimal performance and longevity.

Ice Bath Care & Maintenance

• Your Sisu ice bath is built to last with minimal upkeep. A simple routine keeps the water fresh, the equipment running efficiently, and your cold plunge experience at its best. Whether you're using an integrated chiller system or adding ice manually, these steps will help you get the most out of your investment.
• The key to low-maintenance ownership is consistency. A few minutes after each session and a short weekly check prevents the kind of buildup that leads to bigger jobs down the track.

After Every Session

• Shower before entering. Body oils, sunscreen, sweat, and lotions are the number one cause of cloudy water and filter clogging. A quick rinse before you plunge makes a significant difference to water quality.
• Replace the insulated lid immediately. This maintains water temperature, reduces energy consumption on chiller units, and keeps debris, insects, and leaves out of the water.
• Wipe down the rim and any exposed surfaces with a clean cloth to prevent waterline buildup.
• Remove any visible debris from the water with a small skimmer net.

Weekly Routine

• Check water clarity and smell. Clean water should be clear with no odour. If cloudy or smelly, change the water regardless of when you last filled it.
• Clean or rinse the filter element (chiller models). Remove the cartridge and rinse under running water — takes under two minutes and keeps circulation at full flow.
• Wipe the waterline around the interior with a soft cloth or non-abrasive sponge. Mild dish soap or diluted white vinegar is all you need.
• Test water quality if you're using sanitising tablets or water treatment products. Simple test strips from pool supply shops give a quick read on pH and sanitiser levels.

Fortnightly (Chiller Models)

• Check the ozone generator is functioning. Most units have an indicator light — if it's off or flashing, consult your user manual or contact us.
• Inspect hose connections between the chiller and tub for leaks or loosening. Tighten fittings by hand — don't overtighten.
• Clean the chiller's air intake and exhaust vents. Dust and insects accumulate quickly in Thailand's climate. Wipe or vacuum the vents to maintain airflow and cooling efficiency.

Monthly Routine

• Deep clean the interior. Drain completely, wipe all interior surfaces with a mild cleaning solution, and rinse thoroughly before refilling. For stainless steel, use a dedicated stainless steel cleaner. For composite or timber, use only approved products for that material.
• Replace the filter cartridge if showing wear, discolouration, or reduced flow even after rinsing. Most filters last 2–3 months depending on usage.
• Inspect the drain valve and plug for signs of wear or slow leaking. Replace seals if needed.
• Timber exteriors: Check for cracking, splitting, or discolouration. Apply recommended timber treatment oil if the wood appears dry. Thailand's UV and humidity accelerate timber aging.

Water Change Schedule

• With chiller, ozone, and filtration: Change every 2–4 weeks depending on usage. Heavy daily use or multiple users requires more frequent changes.
• Without a chiller (manual ice): Change after every session, or at minimum every 2–3 days. Standing water without sanitation becomes a breeding ground for bacteria in Thailand's warm climate.
• Always use clean tap water. If your supply has high mineral content, consider a basic inline filter on your garden hose to reduce calcium buildup.

Seasonal Tips for Thailand

• Hot season (March–May): Expect longer cooling times and higher energy use. Ensure good ventilation around the chiller and keep it out of direct sunlight.
• Rainy season: Outdoor tubs need more frequent cleaning. Check for debris buildup and ensure the area around the base has adequate drainage.

What to Avoid

• No bleach, pool chlorine, or harsh chemicals. These damage interior surfaces, seals, and chiller components. Use products designed for small cold plunge systems, or ask us for recommendations.
• Never leave the tub uncovered. Uncovered water in Thailand attracts mosquitoes and debris rapidly.
• Don't run the chiller without adequate water level. The pump must be fully submerged. Running dry damages the pump and voids your warranty.
• Don't pressure wash timber exteriors. High pressure forces water into the grain and causes splitting. A gentle hose and wipe is sufficient.

Chiller Maintenance

• Keep the unit on a level, stable surface with at least 30cm clearance on all sides for airflow.
• Visually check refrigerant lines for damage or wear. Do not attempt refrigerant repairs yourself — contact us or a qualified technician.
• The compressor and fan are sealed units requiring no user maintenance. If you hear unusual noises, frequent cycling, or the unit isn't reaching target temperature, contact support.
• Clean the condenser coils every 3–6 months by gently brushing off dust and debris. This is the single most impactful task for chiller longevity and efficiency.

When to Contact Us

• Water not reaching target temperature despite clean filters and vents
• Unusual noises from the chiller or pump
• Error codes on the digital controller
• Ozone generator not activating
• Any leaks from the tub, fittings, or chiller unit
• Visible damage to the interior surface
• Questions about replacement parts or filter cartridges

Warranty Reminder

• Regular maintenance as outlined above is a condition of your warranty. Keep a simple log of water changes and filter replacements — this protects you in the unlikely event of a warranty claim and helps us diagnose issues faster.

Q: Does this come with a chiller?

A: The tub and chiller are sold separately so you can choose the right chiller for your needs. Select from Standard (1.0HP or 2.0HP), Mid-Range (1.0HP or 2.0HP), or Premium (2.0HP) options during checkout.

Q: Can I use it without a chiller?

A: Yes. Fill with water and add ice manually. Without a chiller, you'll need to change the water after each session and add fresh ice each time.

Q: What is Thermo Knotless Spruce?

A: New Zealand-grown spruce that's been heat-treated (thermally modified) to improve its resistance to moisture, decay, and dimensional changes. The knotless grade means a clean, uniform appearance with no visible knots in the timber.

Q: How does it compare to Red Cedar?

A: Both are excellent exterior timbers. Knotless Spruce has a lighter, more uniform colour with a Scandinavian look. Red Cedar has a richer, warmer tone with more natural grain variation. Performance-wise, both handle humidity well when maintained.

Q: Does the timber need maintenance?

A: Occasional treatment with timber oil keeps the spruce looking its best. Check monthly and treat when the wood appears dry. The thermo treatment improves durability, but regular care extends the life of any timber exterior in Thailand's climate.

Q: How cold can it get with a chiller?

A: Down to 3°C. Most users find 5–10°C optimal for cold therapy benefits.

Q: How heavy is it when full?

A: Approximately 572kg. Ground-level installation on a solid concrete base is recommended.

Q: What's included in the box?

A: The ice bath tub with lid, 2 hoses, 2 spare filters, filter wrench, 2 rubber seals, and user manual. Chiller unit ordered separately.

Q: What's the warranty?

A: 1 year covering electrical components and structural defects. Does not cover damage from improper installation, power surges, or cosmetic wear.