Single-person cold plunge tub from Mande Spa USA. Fiberglass insert with ThermoWood® cladding, metal bands, thermo leather lid, stairs, and a 1" drain valve pre-installed. Arrives fully assembled — unpack, lift the stairs out of the tub, fill with a garden hose.

Dimensions and capacity

• 41.3" outer diameter × 35.4" deep
• 33.5" inner diameter
• Water capacity approximately 135 gallons
• Approximately 280 lbs empty

A chiller is not included. Without one the tub holds cold water but does not cool it — tap water sits around 50–70°F depending on the season, and adding ice brings it to roughly 45–55°F. With a chiller it holds 45–59°F consistently, which is what we recommend.

Choosing a chiller. The MWC-1 is not tied to one chiller model — most compatible cold plunge chillers can be connected. For reference, the unit Mande pairs with the MWC-1 in Europe delivers 17,000 BTU/h (5 kW) in moderate conditions, chills to 36°F, runs at approximately 9.5 GPM through 1.25"–1.5" barbed fittings, and is rated for water volumes up to about 530 gallons — comfortably more than this tub needs. That European unit is 220–240V / 50Hz, so a U.S. chiller must be specified to U.S. electrical standards; match the performance, not the voltage. A bypass connection is recommended. Talk to us before you buy and we will confirm the pairing and the fittings.

Water care. Without filtration, change the water every 3–5 days. With filtration, every 4–8 weeks. If you run a chiller, filtration is required — without it the heat exchanger can clog and the unit can be damaged.

Freezing weather. Drain the tub completely during any freezing period. Ice will crack the fiberglass insert.

Lead time is typically 7 to 14 days from our Mundelein, Illinois warehouse. Ships curbside freight, lower 48, liftgate included.

Warranty

Mande Spa USA Limited Product Warranty. Mande Spa USA LLC (Palatine, Illinois) warrants the cold plunge tub structure, fiberglass insert, and drain valve and hardware against defects in materials and workmanship for 5 years from the date of original purchase for residential use, and 1 year for commercial use. Commercial use includes gyms, hotels, resorts, wellness and recovery centers, fitness and medical facilities, therapy clinics, rental properties and short-term rental platforms — any revenue-generating installation. The warranty is non-transferable and applies to the original purchaser only, with proof of purchase. The tub must be placed on a level, stable surface with adequate drainage. Shipping damage must be documented and reported within 5 days of delivery. Not covered: normal wear and weathering, natural ThermoWood® color change, water damage from improper drainage, misuse, unauthorized modification, acts of nature, and neglect of basic care and maintenance. A chiller is not included with this tub and is not covered by this warranty. Read the full Mande Spa USA Limited Product Warranty →