How Heat Pumps Are Helping Leisure Centres Achieve Net Zero by 2030

by Jon Vincent, Sales Engineer

Leisure centres are among the most energy-intensive buildings in the public sector, with swimming pools, hot water systems, air handling, and space heating running continuously. As local authorities across the UK commit to net zero leisure centres by 2030, the need for low-carbon heating solutions has never been greater.

One technology leading this transition is the use of heat pumps for leisure centres, providing an efficient, future-proof alternative to gas boilers while maintaining the high temperatures required for pools, showers, and HVAC systems.

With rising energy costs, tightening carbon legislation, and government decarbonisation targets, operators are increasingly turning to air source heat pumps for swimming pools, cascade systems, and hybrid solutions to reduce emissions without compromising performance.

At Cooltherm, we work with consultants, contractors, and local authorities to deliver heat pump retrofit solutions for leisure centres, helping facilities reduce operating costs while progressing toward net zero targets.

Why Are Leisure Centres So Hard to Decarbonise?

Leisure facilities have unique heating demands compared to typical commercial buildings.

High energy loads

• Pool water heating (typically 27–30°C)
• Domestic hot water for showers
• Space heating for large volumes
• Dehumidification systems

Long operating hours

Most leisure centres operate 14–18 hours per day, with plant running continuously.

High flow temperatures

Traditional systems often run at 70–80°C, making direct electrification challenging.

Ageing infrastructure

Many UK leisure centres were built in the 1970s–1990s and rely on gas boilers.

According to the Carbon Trust, heating accounts for the majority of energy use in sports and leisure facilities, making it the primary focus for decarbonisation.

This is why high temperature heat pumps for retrofit projects are becoming critical.

How Do Heat Pumps Work in Leisure Centres?

Heat pumps transfer energy rather than generating it through combustion, making them significantly more efficient.

Typical system configuration

• Air source or water source heat pump
• Buffer tank / thermal store
• Plate heat exchangers for pools
• AHU heating coils
• BMS integration
• Cascade or hybrid operation

Why heat pumps are ideal for leisure facilities

• High efficiency at part load
• Continuous operation capability
• Compatible with low-carbon electricity
• Eligible for public sector funding schemes

Cooltherm designs systems using cascade heat pump configurations, allowing leisure centres to maintain required temperatures while improving seasonal efficiency. ➡ See our heat pump solutions

Can Heat Pumps Provide Enough Temperature for Swimming Pools?

Yes, modern systems can deliver the temperatures required for pool heating and domestic hot water.

Typical requirements

Application   Temperature
Pool water              27–30°C 
Pool hall air            30–32°C  
Showers / DHW      60°C
Heating circuits       50–70°C

High-temperature heat pumps can achieve these values using:

• Cascade refrigerant systems
• CO₂ heat pumps
• Hybrid heat pump + boiler systems
• Turbocor / Turbomiser chillers with heat recovery

This makes decarbonising swimming pools with heat pumps practical even in retrofit projects.

What Is the ROI of Heat Pumps in Leisure Centres?

One of the biggest drivers behind adoption is operating cost reduction.

Energy savings

Heat pumps typically deliver:

• COP 3–5 in leisure applications
• 60–70% lower gas consumption
• Reduced carbon emissions
• Lower maintenance costs

Example savings scenario

• Gas boiler efficiency: 85%
• Heat pump COP: 3.5
• Energy cost reduction: 30–50%
• Carbon reduction: up to 70%

According to UK Government, public sector buildings must significantly reduce emissions before 2030, making heat pumps a key investment. ➡ Read our leisure centre case studies

Why Local Authorities Are Switching to Heat Pumps Now

Several factors are accelerating adoption.

Net Zero legislation

UK councils have declared climate emergencies.

Public Sector Decarbonisation Scheme (PSDS)

Funding supports heat pump retrofits.

Rising gas prices

Electric heat pumps can reduce exposure.

ESG reporting requirements

Facilities must show carbon reduction.

Aging plant replacement cycles

Boilers reaching end of life.

These drivers make heat pump retrofit leisure centre projects one of the fastest-growing sectors in HVAC.

What Type of Heat Pump Is Best for Leisure Centres?

The right solution depends on the building, emitters, and temperatures required.

Air Source Heat Pumps

• Most common retrofit option
• Lower install cost
• Suitable for most leisure sites

Water Source Heat Pumps

• High efficiency
• Ideal where water source available

High Temperature Heat Pumps

• Best for boiler replacement
• Minimal system changes

Hybrid Systems

• Heat pump + boiler
• Ideal for phased decarbonisation

Cooltherm specialises in high-temperature and cascade heat pump systems for leisure facilities, ensuring performance without compromising comfort. ➡ Heat pump Products

The Path to Net Zero Leisure Centres Starts with Heat Pumps

Achieving net zero leisure centres by 2030 requires a shift away from fossil fuel heating.
Heat pumps provide the most practical, proven, and future-proof solution for swimming pools, sports halls, and public leisure facilities.

With the right design, retrofit strategy, and controls integration, leisure centres can:

• Reduce carbon emissions
• Cut energy costs
• Improve efficiency
• Meet government targets
• Future-proof their buildings

Cooltherm has decades of experience delivering heat pumps for leisure centres, helping operators transition to low-carbon heating with minimal disruption. Contact Cooltherm to discuss your project

FAQ — Heat Pumps for Leisure Centres

What is the best heating system for leisure centres?

Heat pumps are now the preferred solution because they reduce carbon emissions and operating costs while maintaining required temperatures.

Can heat pumps heat swimming pools?

Yes. Modern high-temperature heat pumps can heat pools, showers, and HVAC systems in leisure centres.

Are heat pumps suitable for retrofit projects?

Yes. Many UK leisure centres are installing cascade or hybrid heat pump systems to replace gas boilers.

How much energy can heat pumps save?

Typical savings range from 30–50% energy reduction and up to 70% carbon reduction.

Are heat pumps required for net zero targets?

Most net zero strategies for public sector buildings include heat pumps as the primary heating technology.