# Are Hot Tubs Expensive to Run in the UK?

**By Centuraheat** · 2025-10-02

# Are Hot Tubs Expensive to Run in the UK? A Detailed Cost Analysis and Savings Guide

Thinking of investing in a hot tub but worried about the running costs in the UK? You’re not alone. Hot tubs provide relaxation, stress relief, and health benefits — but they also require continuous energy to keep the water warm and clean.

This guide breaks down **average hot tub running costs in the UK**, explores the main factors that influence electricity usage, and offers practical cost-saving tips. By the end, you’ll know what to expect on your utility bill and how to keep costs as low as possible.

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### 1\. Understanding Hot Tub Energy Consumption in the UK

Hot tubs consume electricity mainly for:

-   **Heating the water** – The biggest energy draw. Maintaining 37–40°C, especially in winter, requires frequent heater cycles.
    
-   **Filtration and circulation** – Pumps run intermittently to maintain clean, hygienic water.
    
-   **Jets and lighting** – Used during sessions, not continuously, but they still add to total energy use.
    

On average, hot tubs use **30–90 kWh per month**. Smaller 2–3 person models typically use 30–50 kWh, while 5–7 person tubs can exceed 70–90 kWh.

According to **[Ofgem](https://www.ofgem.gov.uk/energy-data-and-research/data-portal/wholesale-market-indicators)**, UK electricity costs around **34p per kWh (2025)**. This means running a hot tub costs **£15–£50 monthly**, depending on usage, size, and efficiency.

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### 2\. Key Factors Affecting Running Costs

-   **Insulation quality** – High-quality insulation and thermal covers drastically reduce heat loss.
    
-   **Frequency of use** – Daily long sessions drive up consumption; occasional use allows eco modes to work effectively.
    
-   **Seasonal changes** – Winter increases heating demand; summer costs drop significantly.
    
-   **Set temperature** – Keeping the tub at a slightly lower temperature when not in use can cut costs.
    
-   **Duration of sessions** – Longer jet use equals higher electricity bills.
    

For a 4-person well-insulated hot tub used several times weekly, expect costs around **£25–£35 per month**. The same model, poorly insulated and heavily used, could exceed £50.

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### 3\. Example Cost Comparison

Model

Avg. kWh per Month

Estimated Monthly Cost (£)

2–3 Person Hot Tub

~35 kWh

~£12

5–6 Person Hot Tub

~75 kWh

~£26

Figures assume an electricity tariff of 34p/kWh and average seasonal use. Costs rise in winter or if no thermal cover is used.

For detailed insights into **optimal water temperature settings**, see our guide on [finding the best hot tub temperature in the UK](https://centuraheat.co.uk/blogs/news/finding-the-best-hot-tub-temperature-in-the-uk).

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### 4\. Tips to Reduce Hot Tub Running Costs

-   **Use a thermal cover** – Prevents unnecessary heat loss when not in use.
    
-   **Lower water temperature by 1–2°C** – Small changes save noticeable amounts.
    
-   **Schedule heating for off-peak hours** – If you’re on a flexible tariff, this can cut costs.
    
-   **Limit jet use** – Enjoy them but avoid running jets constantly.
    
-   **Maintain your hot tub** – Clean filters and serviced pumps work more efficiently.
    
-   **Install smart controls** – Timers and remote heating control optimise energy cycles.
    

For more seasonal safety advice, see our guide on [using a hot tub in winter](https://centuraheat.co.uk/blogs/news/can-you-use-a-hot-tub-in-winter-winter-hot-tub-tips-safety-advice).

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### 5\. Seasonal Considerations

UK winters increase hot tub costs because heaters run more often. In contrast, summer bills are lower since ambient temperatures reduce heat loss.

Investing in **energy-efficient models with advanced insulation, smart thermostats, and variable speed pumps** can make a significant difference. According to the **Carbon Trust**, improving insulation and energy management in appliances can cut energy costs by up to 20%.

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### Conclusion

Running a hot tub in the UK typically costs **£15–£50 per month**, depending on tub size, insulation, and usage. With smart habits like using thermal covers, reducing water temperature slightly, and running during off-peak hours, you can keep costs under control.

For the best experience, invest in an **energy-efficient hot tub** and maintain it properly to maximise relaxation without unnecessary expense.

**Tags:** Energy Costs, Hot Tub, Saving Tips, UK Home, Wellness

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> Source: [Centuraheat](https://centuraheat.co.uk/blogs/news/are-hot-tubs-expensive-to-run-in-the-uk)