3 Best 1 HP Hot Tubs, Compared

Quick picks

The best fit for you

• You want the most durable stainless steel tub Smartmak 2-Person Stainless Steel Tub with 1 HP Chiller The Smartmak uses stainless steel construction and offers 1 HP cooling for reliable performance.
• You need a compact oval cedar tub AURGOD 51-Inch Oval Cedar Hot and Cold Tub The AURGOD features a 51-inch oval cedar design with 1 HP heating and cooling.
• You prefer a larger rectangular cedar plunge KPlunge 62 in. Cedar Cold Plunge Tub The KPlunge provides a 62-inch cedar body with 1 HP chiller for precise temperature control.

Our 3 picks

1 Best overall

Smartmak 2-Person Stainless Steel Tub with 1 HP Chiller

Best for: Users seeking a durable, WiFi-controlled 2-person ice bath

Horsepower

1 HP (what this guide is about)

Seating Capacity

2 Person

Material

Canadian red cedar and stainless steel

Dimensions

80 x 33.5 x 38.5 inches

Control Type

WiFi

View on Amazon: Smartmak 2-Person Stainless Steel Tub with 1 HP Chiller Affiliate link

This Smartmak cold plunge tub combines Canadian red cedar with an internal stainless steel shell for durability. It includes a 1 HP chiller capable of cooling to 37°F and heating to 107°F. You control the temperature via WiFi. The unit holds 500 liters and seats two people. It requires no assembly, though you must connect the chiller to the tub. This setup suits those seeking a ready-to-use ice bath with precise temperature control.

Pros

• 1 HP chiller with 2405W cooling and 3600W heating power
• Temperature range from 37°F to 107°F
• WiFi control for remote operation
• Built-in filter and UV sterilization for water cleanliness
• ETL safety certification with anti-leakage protection

Cons

• Requires manual connection of water inlet and outlet tubes
• Must drain internal water after use to prevent freezing
• Limited to 2-person seating capacity

Good fit if

• You want a pre-assembled tub that requires no complex setup
• You need precise temperature control via a smartphone app
• You prefer the natural look and smell of red cedar

Skip if

• You need a larger tub for more than two people
• You want a completely sealed unit with no external plumbing connections
• You require a warranty longer than one year

Verdict: Smartmak 2-Person Red Cedar Cold Plunge Tub offers a durable cedar and steel build with reliable 1 HP cooling. It is ideal for users who value WiFi control and a ready-to-use design over larger capacity.

2 Best budget

AURGOD 51-Inch Oval Cedar Hot and Cold Tub

Best for: Users seeking a durable wood-finished plunge

Horsepower

1 HP (what this guide is about)

Material

Canadian Red Cedar, stainless steel

Dimensions

51 x 36 x 28 inches

Control Type

Wifi

Shape

Oval

Use

Outdoor

View on Amazon: AURGOD 51-Inch Oval Cedar Hot and Cold Tub Affiliate link

This AURGOD unit combines a Canadian Red cedar shell with a 1 HP chiller. The oval design measures 51 inches long, 36 inches wide, and 28 inches high. It offers a temperature range from 37°F to 107°F. The stainless steel interior supports both indoor and outdoor placement. You get a complete set that requires no complex installation. It suits those who want a durable, wood-finished tub for recovery.

Pros

• 1 HP chiller with ETL certification
• Temperature control from 37°F to 107°F
• Sturdy Canadian Red cedar exterior
• Stainless steel interior for durability
• Oval shape provides broad seating space

Cons

• Exterior black paint needs annual maintenance
• Heating efficiency drops in air below 40°F
• Chiller may seize if used below 5°F

Good fit if

• You want a wood-finished tub for your patio
• You need a unit that cools and heats water
• You prefer a ready-to-use setup without assembly

Skip if

• You live in an area with freezing temperatures below 25°F
• You want a tub that requires zero maintenance
• You need a unit designed for use below 5°F

Verdict: AURGOD 51 in. Oval Red Cedar Plunge is a solid choice for users who value natural materials and precise temperature control. It fits buyers who want a durable, outdoor-ready tub that handles both cold plunges and warm soaks without complex setup.

3 Also great

KPlunge 62 in. Cedar Cold Plunge Tub

Best for: Cold plunge enthusiasts seeking cedar aesthetics

Horsepower

1 HP (what this guide is about)

Material

Cedar wood, stainless steel

Dimensions

62 x 42 x 28 in.

Weight

326 pounds

View on Amazon: KPlunge 62 in. Cedar Cold Plunge Tub Affiliate link

This KPlunge tub features a 62-inch cedar shell paired with a 1 HP chiller and heater. The system regulates water temperature from 38°F to 104°F. It measures 62 by 42 by 30 inches and weighs 326 pounds. The stainless steel interior helps lock in temperature. It suits users who want a dedicated cold plunge and hot tub in one unit.

Pros

• 1 HP chiller and heater system
• Temperature range from 38°F to 104°F
• 62-inch cedar wood construction
• Stainless steel interior for temperature retention

Cons

• Heavy at 326 pounds
• Large footprint requires significant floor space
• No mention of included jets or massage features

Good fit if

• You want a dedicated cold plunge tub
• You prefer natural cedar wood aesthetics
• You need precise temperature control down to 38°F

Skip if

• You need a portable or lightweight unit
• You require hydrotherapy jets for massage
• You have limited floor space for a 62-inch tub

Verdict: KPlunge 62 in. Cedar Cold Plunge Tub is a sturdy option for users who prioritize temperature precision and natural materials over hydrotherapy features.

Specifications side by side

Is 1 HP Enough for Your Cold Plunge?

One horsepower drives the chiller or heater in these tubs. This power level handles temperature shifts for two people comfortably. The Smartmak uses this motor for cooling in a steel shell. The AURGOD and KPlunge use it for heating or cooling in cedar. You get precise control without oversized equipment. It is enough for daily use. It is not for rapid heating of large volumes.

Worth it if

• You want reliable temperature control for one or two people.
• You prefer a compact tub that fits in smaller spaces.
• You need consistent cooling or heating for daily use.

Skip it if

• You need to heat water for more than two people quickly.
• You want a spa with high-pressure jet massage systems.
• You require industrial-grade cooling for commercial environments.

How we picked these tubs

We selected these 3 hot tubs by scanning Amazon listings for the Horsepower: 1 HP specification. This single metric defines the cooling or pumping capacity for every model in this guide. We included only products where the listing explicitly states this horsepower rating in the title or feature list. We do not handle or test these units physically. All details come directly from the published specifications on the product pages.

The products are ordered by availability first, then by overall rating weighted by count, and finally by how many of our criteria the specs meet. We show only one size or variant per product family. Prices and stock levels are live data refreshed daily. They are not part of this static text. We focus strictly on the technical specifications provided by the manufacturers.

How to choose the right one

1. Check your space limits

   Measure your installation area before buying. The Smartmak measures 80 inches in length, which requires a long, narrow footprint. It is 33.5 inches wide and 38.5 inches high. The AURGOD is shorter at 51 inches long but wider at 36 inches. The KPlunge sits in the middle at 62 inches long. Ensure your patio or indoor space can accommodate the largest dimension. Clearances for maintenance access are also necessary. Compare the length and width specs to your available floor space to avoid fit issues.

2. Decide on material type

   Material affects durability and aesthetics. The Smartmak uses stainless steel, which offers a modern, industrial look and high resistance to corrosion. The AURGOD and KPlunge use red cedar, providing a natural, warm aesthetic. Cedar is a traditional material for plunge tubs. Steel is generally easier to wipe clean. Cedar may require more upkeep to maintain its finish. Choose steel if you prefer a low-maintenance, contemporary design. Choose cedar if you want a classic, organic appearance that blends with outdoor environments.

3. Consider weight and setup

   Weight impacts floor support and moving logistics. The AURGOD weighs 400 pounds, making it heavy to position. The KPlunge weighs 326 pounds, which is lighter but still substantial. The Smartmak does not list a weight, but stainless steel is dense. Ensure your floor can support the total load. You may need help to move the tub into place. Check for stairs or narrow doorways. Heavier units are more stable but harder to relocate. Verify your structural capacity before finalizing your choice based on mass.

4. Match shape to your use

   Shape influences comfort and space usage. The Smartmak is rectangular, which is efficient for straight-line soaking or sitting upright. The AURGOD and KPlunge are oval, which can offer more ergonomic seating curves. Oval shapes may fit better in corners or against walls. Rectangular tubs maximize linear space. Consider how you will sit. Do you need legroom along the length? Or do you prefer a compact footprint? The shape dictates the internal volume layout. Select the form factor that aligns with your body size and preferred posture.

5. Verify chiller compatibility

   The 1 HP motor drives the temperature control. Ensure the unit includes the necessary chiller or heater for your needs. The Smartmak includes a 1 HP chiller for cooling. The AURGOD supports both hot and cold functions. The KPlunge lists a 1 HP chiller specification. Confirm the motor handles your target temperature range. Cold plunges require active cooling. Warm soaks require heating. Check the listing for explicit mention of the chiller or heater inclusion. This spec determines whether the tub can actively change water temperature or just maintain it.

Frequently asked questions

See also

• best hot tubs under 500
• best hot tubs under 1000
• best jointers with 1 HP
• best air compressors with 1 HP