How Much Does It Cost to Heat My Pool with a Heat Pump in the UK?

One of the biggest questions for pool owners is: “How much does it cost to heat my pool?” In the UK, where energy prices can vary a lot, running costs are a key factor when choosing the right pool heater. Our pool heat pump cost calculator gives you a clear estimate based on your pool size, water temperature, and electricity rate,  so you know exactly what to expect.

Why Heat Pumps Are the Most Cost-Effective Way to Heat a Pool in the UK

Unlike gas or electric resistance heaters, a heat pump doesn’t create heat directly. Instead, it captures warmth from the outside air and transfers it into your pool water. This makes it highly efficient, often producing 3–5 units of heat for every 1 unit of electricity used.

For UK pool owners, this efficiency means lower heating bills compared to other options.

Average Pool Heating Costs with a Heat Pump

So, how much does it really cost to heat a pool in the UK?

• A typical outdoor pool heated by a heat pump can cost around £1–£3 per hour to run, depending on electricity prices.
• In comparison, a gas boiler could cost £5–£10 per hour for the same pool.

Over a summer season, that difference can add up to hundreds of pounds in savings.

Factors That Affect the Cost of Heating a Pool

When asking “How much does it cost to heat my pool?” with a heat pump, the main things to consider are:

• Pool size and depth – Larger pools need more energy to maintain warmth.
• Outside air temperature – Heat pumps are most efficient in mild to warm weather.
• Electricity rate – UK energy tariffs can vary, so always check your current kWh price.
• Use of a pool cover – A simple solar cover can reduce heat loss and cut heating costs by up to half.

Find Out Your Exact Cost

Our UK pool heat pump cost calculator gives you a personalised estimate based on your details. No guesswork, no complicated formulas — just a clear idea of what it will cost to heat your pool with a heat pump.

How It Works

1. Enter your pool volume and starting temperature.
2. Set your target swimming temperature.
3. Enter your Electricity Cost and a few other details
4. Instantly get an estimate for the cost.

Why Use This Calculator?

Heating a pool involves many variables pool size, air temperature, heating system efficiency, and local energy prices. Instead of guessing, this tool gives you real numbers to:

• Understand the cost of heating a swimming pool
• Plan your energy usage and budget
• Decide if owning a swimming pool is right for you

What Size Heat Pump Do I Need for My Pool?

Use our Swimming Pool Heat Pump Size Calculator UK to help you decide

How much water does my swimming pool hold?

Use our Pool Water Volume Calculator UK to help you work out how many liters your pool holds.