Premium Cold Plunge FAQ and Operating Instructions
- The Plunge uses the built-in refrigeration system of a chest freezer to cool the water.
- Unlike traditional systems that rely on external chillers (pumps, pipes, fans, heat exchangers), our unit is fully self-contained and cools through passive heat radiation inside insulated walls.
- Simpler. Quieter. More efficient.
- Unlike other cold plunge systems that rely on chillers to extract heat from the water via a heat exchanger and a fan,
the Sweat Tent Premium Plunge passively radiates heat through the outer walls of the freezer, providing a simpler and more energy-efficient solution.
The unique design of
the Sweat Tent Premium Plunge offers several advantages over traditional chiller-based systems:
- Quieter operation:
The Sweat Tent Premium Plunge operates without the need for a fan, making its refrigeration system significantly quieter than systems using chillers. - Less maintenance: The simplicity of
the Sweat Tent Premium Plunge's design translates to fewer moving parts and less complexity, resulting in low maintenance requirements compared to external chiller-based cold plunges which do require yearly maintenance and are much more likely to break down (less reliable at freezing temperatures). - Superior insulation:
The Sweat Tent Premium Plunge features exceptional insulation capabilities, thanks to the thick foam layer between the inner and outer walls of the freezer (>3" of insulation). This advanced insulation ensures the water remains cold for extended periods, reducing the need for the compressor to run frequently. Also, the insulation guarantees "drip-free" walls which means there will not be any sort of external moisture due to condensation, in other words, a completely dry floor. Further, we guarantee water won't freeze even during the coldest of winters. - Uses less energy: The Sweat Tent Premium Plunge cooling system is simple ~ works like your home freezer, not like the other cold-plunge chiller systems. You see, when water moves through pipes, it can pick up heat, making the system work harder to cool it down again. But BoxPlunge doesn't have this problem because it doesn't have water pipes at all. So, it uses less energy to keep the water cold. It's like it's saving energy because it doesn't have to do extra work to cool down the water again (like every other cold plunge in the market that has an external chiller system).
- Less heat dissipation: The heat radiated from a Sweat Tent Premium Plunge will not make the room hot (no exhaust required), any external chiller will make the room hotter, unless you install an exhaust.
- No Plumbing: Not having an external chiller means water does not have to flow out of the unit to get chilled, this avoids any plumbing work which significantly reduces complexity on the system. Further, when there is external plumbing such as an external filter canister there will always be condesantion as a filter canister is less than 1/6" thick; this also means that if you were to turn off the chiller bacteria will grow incredibly fast inside that filter canister (room temp. water in a dirty filter canister is the perfect environment for bacteria or mold to thrive)
- No Condensation: Unlike external chiller systems that need a water tray for managing water condesation (plumbing systems are never insulated enough for there to not be any condesation even the best chillers will need a water tray),
the Sweat Tent Premium Plunge guarantees your floor will stay 100% dry with not tray needed.
- The Sweat Tent Premium Plunge freezers are equipped with a safety feature that automatically disconnects all electronics whenever you open the lid. You'll know it's working when you hear a "clicking" sound, which indicates the tub is safe and power-free. You will also be able to see the thermostat display turning OFF.
- Additionally, all the electronics are GFCI protected. Which means everything will disconnect in case there is any electrical fault (similar to the breakers of your home).
- In addition, all electronics are protected by a GFCI (Ground Fault Circuit Interrupter) system. This means that in the event of any electrical fault, power is instantly cut — similar to the breaker protection in your home.
Safety isn’t an add-on. It’s built into the core of the design.
- We are one of the only cold plunges in the market that are capable of producing ice. Simply drop the set temperature below 32F and let the ice form. But please understand that ice-formations may be abrasive.
- The water won't freeze unless you want it too. With more than 3" insulation, 1,200gph water pump and with the water always inside the tub (i.e. no plumbing at all), it will not turn into ice.
- The Sweat Tent Premium Plunge can be kept outside under shade and ideally protected from the rain. Keep in mind that by leaving it exposed to extremely hot conditions or heavy rain showers you may shorten it's life-span.
A cover is highly recommended.
- To eliminate any risk of leaks, we permanently seal the original chest freezer drainage port. This prevents potential water escape through the factory rubber gasket and ensures long-term structural integrity.
- Instead, every Sweat Tent Premium Plunge unit includes a powerful sump pump and drainage hose, allowing you to fully empty the tub in less than 10 minutes.
- This is up too the customer, please leave an order note whether or not you want a hinged lid. If no note is made, we will automatically ship you your plunge with a hinged lid.
- Sweat Tents cold plunge pools are engineered with advanced performance and water-quality technology to deliver a superior cold therapy experience.
- Our plunge features a high-efficiency filtration system that includes a built-in skimmer and a 2.5" x 10" micron filter. This system produces over 1,000 gallons per hour of circulation, exceeding the flow rate of most cold plunges on the market.Each unit also comes equipped with an integrated ozone generator, which actively sanitizes the water and helps maintain a low-bacteria environment for extended periods. The result is cleaner water, reduced maintenance, and a more hygienic plunge experience.
- Together, these systems ensure consistent performance, crystal-clear water, and a powerful cold immersion experience designed to support recovery, resilience, and overall well-being.
Setup and Operating Instructions!
1.1 Delivery Overview
-The unit ships via LTL freight carrier on a crated pallet.
-The carrier will schedule a delivery appointment.
-Delivery is curbside/driveway only.
-Carriers will not bring the unit upstairs.
1.2 What Ships With Each Unit
Each unit includes:
-Control Box
-GFCI Protected Plug
-Towel Holder
-Phone Holder (Timer Holder)
-Submersible LED Light
-Sump Pump with 10 ft Hose
-Filter Canister
-Anti-Slip Mat
-Ozone Generator (Pre-installed inside control box)
-Auxiliary Magnet (for system testing)
2.1 Install Bottom Support (CRITICAL)
-Two foam supports are included in the packaging.
Do NOT discard these.
-Locate tape/arrow markings on the underside of the unit.
-Align the foam pieces with the indicated arrow positions.
-Ensure the entire Box Plunge rests securely on these supports.
-The unit must be fully supported and level before proceeding.
3.1 Mount the Control Box
-Locate the anchor rails on the side of the plunge.
-Slide the control box anchor points into the mounting brackets.
-Ensure it locks securely into position.
(Custom builds may mount on opposite side.)
3.2 Open the Control Box
-Lift the side levers to access internal wiring connections.
Inside you will find:
-Thermostat
-Internal outlets
-Ozone timer
-Wiring ports
⚠️ SAFETY FIRST:
This unit MUST be plugged into a GFCI-protected outlet only.
Never plug directly into a standard wall outlet.
4.1 Connect the Chest Freezer Plug
-Locate the freezer plug at the back of the unit.
-Undo the tied knot.
-Feed the plug through the designated control box opening.
-Plug it into the internal outlet.
4.2 Connect the Thermostat Probe
-Locate the probe wire.
-Plug it fully into the thermostat port.
⚠️ Important:
-It must be fully inserted or an error will appear on the screen.
4.3 Connect the Ozone Generator Tube
-Attach the ozone tube securely to the ozone generator port.
4.4 Cable Management
-Tidy excess wiring through cable openings.
-Ensure no wires block:
-Timer buttons
-Lid closure
-Keep interior clean and organized.
5.1 Install Anti-Slip Mat
-Place the PVC mat flat at the bottom of the unit.
5.2 Install Suction Handles (Removable Lid Models Only)
-Lightly wet suction cups.
-Press against smooth surface.
-Pull locking levers down to secure.
-If unit has exterior wrap:
-Use provided adhesive pads first to protect wrap.
5.3 Install Filter Canister
-Remove tape holding O-ring.
-Thread PVC union onto water pump.
-Ensure connections are tight.
5.4 Install LED Light
-Place battery-operated light inside unit.
6.1 Prepare Water Source
-Run hose first to clear stagnant water.
-If you have hard water, use a hose filter (recommended).
6.2 Fill Level
Fill water to:
-The “Ideal” mark, OR
-Minimum 2 inches above mesh intake
6.3 Prime Filter
-Inject water directly into filter canister to prevent floating.
6.4 Cooling Strategy (Important)
-You have two options:
-Option A – Passive Cooling
-Wait 48+ hours for water to cool.
-Option B – Add Ice (Faster)
-Open ice bags before pouring.
-Do NOT throw ice aggressively (can damage liner).
6.5 Water Pump Timing
⚠️ Do NOT plug in water pump until water is cold.
-Plugging pump in while water is warm will delay cooling.
7.1 GFCI Requirement
Plug main white cord into GFCI outlet.
If unit trips:
Press RESET on GFCI.
⚠️ Always disconnect power before entering plunge.
7.2 Internal Freezer Thermostat
For Box 10–18:
Set internal freezer dial to coldest setting.
For Box 19 (Digital thermostat):
Ignore manual dial.
Hold “SET” for 3 seconds.
Adjust temperature using arrows.
Press “SET” again for 3 seconds to confirm.
Recommended:
Beginners: 55–60°F
Intermediate: 45–50°F
Advanced: 40°F
To confirm cooling:
Exterior walls should feel warm or hot.
Located inside control box.
Setup:
Align arrow with current real time.
Each tab = 30 minutes.
Press tabs for desired run times.
Default Recommendation:
12:00 AM for 30 minutes.
Do not exceed 1.5 hours total daily runtime.
Install AFTER water is filled.
10.1 Components
Lid
Base
Media chamber
10.2 Optional Add-On
Mineral ions (help regulate pH)
10.3 Installation
Attach skimmer to inlet.
Ensure submerged:
1/3”–1/2” below water surface.
Proper submersion ensures circulation.
When lid is open, filtration turns off.
To test flow:
Place auxiliary magnet on control box sensor.
Filtration system activates.
Look for water ripples to confirm operation.
12.1 Monthly
Replace filter cartridge.
Clean pre-filter debris (hair, leaves, etc.)
12.2 Every 2 Months
Replace mineral ION media.
12.3 Water Changes
Light Use: Every 6 months.
Heavy Sweating/Dirty Use: Monthly.
Always encourage:
“Shower before plunge.”
Scoop large debris with fish net.
Remove filter unit.
Undo PVC union.
Remove old cartridge.
Insert new cartridge.
Fill filter with water (prime).
Reinstall and tighten.
Place included sump pump in tub.
Attach 10ft hose.
Pump water out.
Wipe/sweep debris from interior walls.
Refill per Section 6.
Maintain:
pH: 7.2 – 7.6
Use hydrogen peroxide as directed (if supplied)
Use mineral ions for balance
Improper chemistry can:
Damage liner
Reduce system lifespan
Decrease filtration efficiency
Always unplug before entering.
Keep lid closed when not in use.
Do not overload with excessive ice.
Keep wiring clean and dry.
Monitor GFCI functionality regularly.