Why We Like It

The Benovo 84" Hot & Cold Plunge is designed as a substantial, permanent alternative to portable and inflatable cold-plunge tubs. Its combination of cedar and stainless-steel construction, full-length rectangular design and included cooling/heating system gives it the appearance and functionality expected in a dedicated home wellness space.

At more than 7 feet long, this is one of the roomier plunge options in the ZenZone Center collection. We especially like the rectangular footprint for buyers planning a defined sauna, home-gym or backyard wellness area where the plunge can become part of the overall design rather than being stored between uses.

Best For

Homeowners looking for a large, rigid hot-and-cold immersion tub with an included temperature-control system rather than a portable plunge or a tub requiring the separate purchase of a chiller.

It's particularly well suited to a dedicated home gym, sauna area or backyard wellness space where there is adequate room, structural support and access to the required 220V electrical service.

Features Worth Considering

• Integrated cooling and heating: The package includes equipment designed for both cold and warm water operation.
• No separate chiller purchase required: Temperature-control equipment is included with the plunge system.
• Full-length design: Approximately 84.25 inches long provides substantial room for full-body immersion.
• Cedar construction: Adds the natural wood appearance often associated with premium sauna and outdoor wellness environments.
• Stainless-steel construction: Provides a rigid, durable immersion surface rather than an inflatable or collapsible tub.
• Rectangular footprint: Allows the plunge to fit neatly alongside a wall or within a planned wellness-space layout.
• Permanent-style installation: Better suited to buyers creating a dedicated wellness area than someone looking for a portable plunge.
• 220V operation: Designed around higher-voltage electrical service appropriate to its temperature-control equipment.

Things to Know Before Buying

There is an important specification conflict in the supplied Amazon listing. One section describes the included cooling/heating system as 2 HP, while another states that the included unit is 1 HP. Because both figures appear in the product information, ZenZone Center should not represent either horsepower rating as confirmed. Buyers should verify the actual chiller/heater supplied with model SMT-HIR21478 before purchasing.

The listing confirms 220V electrical service, which makes this different from plug-and-play models using a standard household outlet. Buyers should confirm the required amperage, breaker, GFCI protection, wiring and connection method with the seller and use an appropriately qualified electrician when required.

The supplied information also does not provide an exact temperature range, water capacity, filtration/sanitation system, dry weight or filled weight. These are important specifications for a plunge of this size and should be verified before site preparation.

Because this is a large rigid unit, also confirm freight delivery, unloading requirements, doorway/gate clearances, drainage and foundation requirements before ordering.

Product Specifications

Brand: Benovo
Model: SMT-HIR21478
Part Number: SMT-HIR21478
Product Type: Temperature-Controlled Hot & Cold Plunge
Color: Black
Tub Dimensions: Approximately 84.25"L × 30.71"W × 37.01"H
Construction: Cedar and stainless steel
Configuration: Full-length rectangular rigid tub
Cooling: Included temperature-control system
Heating: Included
Chiller/Heater Rating: Listing conflict — described as both 1 HP and 2 HP; verify before purchase
Electrical Requirement: 220V
Temperature Range: Not specified — verify before purchase
Water Capacity: Not specified — verify before installation
Filtration/Sanitation: Not specified — verify before purchase
Controls/WiFi: Not specified
Dry/Filled Weight: Not specified — verify before installation
Cover: Not specified — verify before purchase
Steps: Not specified — verify before purchase
Warranty: Verify current Benovo/seller warranty
Delivery/Installation: Verify freight, unloading, electrical, site-access and foundation requirements before ordering

Disclaimer: This product is intended for general wellness, recreation and comfort. It is not a medical device and is not intended to diagnose, treat, cure or prevent any disease. Cold-water immersion may not be appropriate for everyone; use according to manufacturer instructions and individual health considerations.