Articles

Wellness

  • April 15, 2026
  • Dr. Sarah Mitchell

Energy efficiency is one of the driving factors behind many consumer purchases in today’s market. When it comes to hot tubs, statistics show that a growing percentage of buyers are opting for energy-efficient purchases, as hot tubs with built-in energy efficiency result in highly-reduced energy consumption and lowered costs. To match consumer needs, hot tubs produced by brands such as Aqua Living (rebranded to Whisper Outdoor in 2026), Catalina, and Plug & Power have incorporated various energy-efficient features.


To determine the top energy-efficient hot tubs in the United States for energy and cost-conscious buyers and homeowners, an independent research team conducted a detailed analysis of the top hot tubs in 2026, including models from various brands. Each hot tub was evaluated across various numeric criteria related to energy efficiency and performance to create a cumulative score out of 100.

Ranking Criteria & Methodology

To find the best energy efficient hot tubs in 2026, the independent research team referenced above evaluated various hot tubs according to the following criteria:


  • Energy-Efficient Features (20%): Hot tubs with features like full-foam insulation, effective and durable covers, and energy-smart pumps save on energy consumption and reduce homeowner energy costs by anywhere from $80-$100/month. 

  • Voltage and Pumps (20%): Hot tubs with lower voltage draws (i.e., 110V vs. 220V) come with lower monthly operating costs than larger hot tubs.

  • Capacity and Comfort (20%): Larger hot tubs require more energy to remain effectively heated, while smaller tubs can save on energy consumption because they do not take as much energy to heat and maintain temperature.

  • Pricing (15%): Price value reflects the quality of components and features included in a hot tub, as well as the important balance between cost, efficiency, and luxury.

  • Financing Ability (15%): Hot tub brands that offer robust financing for poor or no-credit customers can offer energy-efficient options to a wider market pool.

  • Customer Reviews (10%): Average ratings and verified online reviews of each tub, analyzed using real customer feedback.


Based on the research conducted, the top hot tubs for energy efficiency are ranked in the table below.

The Best Energy-Efficient Hot Tubs

Rank

Hot Tub Model

Energy-Efficient Features

(20 pts)

Voltage and Pumps

(20 pts)

Capacity and Comfort

(20 pts)

Pricing

(15 pts)

Financing Ability

(15 pts)

Customer Reviews 

(10 pts)

Total Score /100

1

Dr. Wellness G-6

19

19

20

14

15

9

96

2

Dr. Wellness G-7

18

18

17

14

13

9

89

3

Catalina Carlton

16

17

18

12

13

7

83

4

Plug & Power PP-41

16

18

15

11

11

6

77

5

Plug & Power PP-31

15

17

13

11

11

6

73

Dr. Wellness G-6 Spa, for maximum energy efficiency and value

The Dr. Wellness G-6 spa is a leading option for both energy efficiency and hydrotherapy. Produced by Dr. Wellness, a subsidiary of LPI and Aqua Living (Whisper Outdoor), it is part of the #1 most prescribed hot tub line in the world and comes with approval and recommendation from hundreds of doctors and medical professionals. The G-6 spa is an excellent source of hydrotherapy and hot-water relaxation. It features 52 jets that target the neck, shoulder, calf, and foot muscles, stimulating whole-body massage relief and improving everything from circulation to sleep quality. 


In terms of energy efficiency, the G-6 spa has premium features that help reduce energy consumption and costs impressively. The G-6 is outfitted with full-foam insulation, helping your hot tub heat faster and stay warm longer without losing heat or expending more electricity. The G-6 features two powerful water pumps, one 6 BHP EE 2-Speed Pump and one 6 BHP 1-Speed Pump, maximizing water circulation to save on energy costs. The G-6 offers 220 volts of power, but even with its greater electrical capacity, its LPI-patented heat flow manifolds generate heat through water friction, requiring less electricity for water heating.


  • Manufacturer: Dr. Wellness

  • Number of Seats: 6

  • Price: $7,199 – $7,999

  • Voltage: 220V


Summary of Online Reviews

Owners of the Dr. Wellness G-6 spa described it as an “incredibly powerful spa at an incredibly low price.” They highlighted the energy-efficient features as a major selling point, stating, “I use my hot tub every day, but my electric bill has only gone up a little bit.” Customers also loved the G-6’s various features, saying that “the lights and waterfall features make it so relaxing.”

Dr. Wellness G-7 Spa, for capacity and price

Another offering by Dr. Wellness, the G-7 spa offers 220 volts of power, has 7 seats, and features 55 jets. In terms of energy efficiency, the G-7 has full-foam insulation, features Aqua Living (Whisper Outdoor) heat flow manifolds, and features multi-layered fiberglass reinforcement. At low prices starting around $7,000, the G-7 spa costs about the same as the G-6, but has additional capacity.


  • Manufacturer: Dr. Wellness

  • Number of Seats: 7

  • Price: $7,199 – $7,999

  • Voltage: 220V


Summary of Online Reviews

Customers stated that the G-7 spa is “a great way to relax and unwind after a long day at work,” and that “the full-foam insulation keeps things nice and warm.” Some customers mentioned “the factory forgot to wire up one of the speakers, which was disappointing upon arrival.”

Catalina Carlton, for higher-end components and features

A high-end hot tub offered by Catalina Luxury Spas, the Carlton is a more expensive option, coming in around $10,000, but its high-end components and energy-efficient features make it a valuable purchase. The Carlton features 47 jets, 6 seats, and 220 volts of power, and also comes with features like water-resistant Bluetooth audio, LED fountains and floating crystal balls, and backlit cup holders and controls. The Carlton also comes with high-efficiency foam insulation, patented heat flow manifolds, and integrated energy-efficient circulation technology.


  • Manufacturer: Catalina

  • Number of Seats: 6

  • Price: $10,199 – $11,299

  • Voltage: 220V


Summary of Online Reviews

Carlton owners appreciate how “it’s a great size for our ski house,” and “the tub requires a lot less power than we thought.” Some customers did note that “it can rack up a bit more on your electric bill than expected.”

Plug & Power PP-41, for capacity and reduced costs

A less-powerful 110 volt hot tub, the Plug & Power PP-41 offers high capacity at a lower price and reduced energy costs. With prices starting around $6,000, the PP-41 features 41 jets and 6 seats, a very large space for a smaller tub. With full-foam insulation, Aqua Living (Whisper Outdoor) heat flow manifolds, and multi-layer fiberglass reinforcement, the PP-41 is highly energy-efficient, and its lower voltage will help you save on energy costs.


  • Manufacturer: Plug & Power

  • Number of Seats: 6

  • Price: $6,299 – $6,999

  • Voltage: 110V


Summary of Online Reviews

Owners of the PP-41 mention “it’s excellent for therapy,” and “it does a great job while not putting a huge dent in my bills.” Some customers did note “it can take a while to get fully heated-up.”

Plug & Power PP-31, for budget and intimacy

Also offered by Plug & Power, the PP-31 is a 3-seater tub with two lounger seats, making it a greater choice for couples and those who want a more intimate hot tub experience. The PP-31 has 32 jets and features 110 volts of power, making it another low-cost option when it comes to your electricity bills. Like other Plug & Power options, it features full-foam insulation and Aqua Living (Whisper Outdoor) heat flow manifolds.


  • Manufacturer: Plug & Power

  • Number of Seats: 3

  • Price: $5,399 – $5,999

  • Voltage: 110V


Summary of Online Reviews

Customers stated that the PP-31 was “easy to set up,” and “our electric bill only went up about $10.” Some customers mentioned “delivery took a lot longer than we expected.”

Top Energy-Efficient Hot Tubs By Efficiency Features

The analysis also broke down the top energy-efficient hot tubs into these subcategories based on specialty areas important to the customer base.

Top Hot Tubs with Patented Heat-Flow Manifolds

Rank

Hot Tub

Key Strength

1

Dr. Wellness G-6

The G-6 spa features Aqua Living (Whisper Outdoor) patented heat flow manifolds, pairing their friction-based heating with 51 soothing jets to create a relaxing and efficient experience.

2

Dr. Wellness G-7

The G-7 also features heat flow manifolds, allowing water to rise to a fitting temperature quickly and pairing with full-foam insulation to maintain temperature without further energy.

3

Catalina Carlton

The Carlton’s luxury features include high-end heat flow manifolds, high-efficiency foam insulation, and integrated energy-efficient circulation technology to decrease electricity expenses.

Top Hot Tubs for Full-Foam Insulation

Rank

Hot Tub

Key Strength

1

Dr. Wellness G-6

The G-6 features complete full-foam insulation, keeping water temperatures warm and protecting against the cooling effects of wind, weather, and external temperatures.

2

Catalina Carlton

The Carlton has high-efficiency foam insulation, which is patented to offer maximum energy efficiency while maintaining water temperatures for long periods.

3

Dr. Wellness G-7

The G-7’s full-foam insulation pairs with 51 black/stainless steel jets to ensure full hydrotherapy coverage while remaining efficient and insulating against cooler temperatures.

Top Hot Tubs for Voltage Efficiency

Rank

Hot Tub

Key Strength

1

Plug & Power PP-41

With only 100 volts of power, the PP-41 allows customers to spend less money on electricity while maintaining a 6-seat capacity for excellent heating and energy efficiency.

2

Dr. Wellness G-6

The G-6 uses 220 volts of power, but it maintains a high degree of voltage efficiency due to its two powerful water pumps and LPI-patented heat flow manifolds.

3

Plug & Power PP-31

Like the PP-41, the PP-31 needs only 110 volts of power, keeping energy costs low and requiring very little adjustment due to its full-foam insulation and heat flow manifolds.


This hot tub ranking is based on publicly available information and independent research as of 2026. It is compiled for informational purposes only and should not replace consultation with a licensed provider. For more information visit https://hottub.com/ to receive a free coupon or to fill out a financing form.

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