🌊 Astral Pool Pro Elyo Touch PET-25 – 25.5kW Premium Inverter Pool Heat Pump for Large Pools

Transform your swimming experience with year-round comfort. The Astral Pool Pro Elyo Touch (PET-25) delivers powerful, whisper-quiet heating for large residential and commercial pools, maintaining perfect water temperature even when outdoor temperatures plummet to -20°C.

🔥 Exceptional Heating Performance

Three Intelligent Operating Modes

Boost Mode 💨 Rapid heating when you need it most. Perfect for spring start-up or after cold spells. Maximum power output ensures your pool reaches optimal temperature quickly.

Smart Mode 🧠 The intelligent choice for everyday use. Automatically balances heating power with energy efficiency, adjusting performance based on ambient conditions and your pool’s needs.

Silent Mode 🔇 Enjoy peaceful operation with reduced noise levels (as low as 41dB). Ideal for evening and overnight heating without disturbing your household or neighbors.

⚡ Outstanding Energy Efficiency

Industry-Leading COP Performance

The PET-25 achieves remarkable efficiency with a Coefficient of Performance (COP) up to 16, meaning you get up to 16 units of heat for every 1 unit of electricity consumed.

Real-World Efficiency:

• At 28°C air / 28°C water: COP 6-16 | 25.5kW heating capacity
• At 15°C air / 26°C water: COP 4.5-8 | 17kW heating capacity

What this means for you: Substantial energy savings compared to traditional gas or electric heaters, with typical annual savings of 60-75% on pool heating costs.

Why Choose the Pro Elyo Touch PET-25?

The PET-25 isn’t just another pool heater—it’s a complete heating solution engineered for performance, efficiency, and reliability. With its advanced Full Inverter Technology and impressive 25.5kW heating capacity, this premium heat pump ensures your pool is always ready when you are, regardless of the weather.

Perfect for: ✅ Large residential pools (60-120m³) ✅ Commercial swimming facilities ✅ Outdoor pools requiring year-round heating ✅ Properties with saltwater pool systems ✅ Pool owners seeking maximum energy efficiency

🌡️ Pool Sizing & Heat-Up Time Calculator

Recommended Pool Volumes

Pool Volume	Heating Suitability	Expected Performance
40-60m³	✅ Excellent	Fast heat-up, easy maintenance
60-90m³	✅ Ideal Range	Optimal performance
90-120m³	✅ Suitable	Extended heating times
120m³+	⚠️ Consider larger model	May require longer runtime

Estimated Heat-Up Times

Formula used: Time (hours) = (Pool Volume × Temperature Rise × 1.16) ÷ Heat Pump kW Rating

⚠️ Important: These are theoretical estimates based on optimal conditions. Actual times vary based on ambient temperature, pool insulation, wind exposure, and initial water temperature.

Temperature Rise: 10°C (e.g., 15°C to 25°C)

Pool Volume	Heat-Up Time (Approx.)	Daily Runtime to Maintain
50m³	23 hours	2-4 hours
70m³	32 hours	3-5 hours
90m³	41 hours	4-6 hours
110m³	50 hours	5-7 hours

Temperature Rise: 15°C (e.g., 10°C to 25°C)

Pool Volume	Heat-Up Time (Approx.)	Daily Runtime to Maintain
50m³	34 hours	3-5 hours
70m³	48 hours	4-6 hours
90m³	61 hours	5-8 hours
110m³	75 hours	6-9 hours

Temperature Rise: 5°C (e.g., 20°C to 25°C)

Pool Volume	Heat-Up Time (Approx.)	Daily Runtime to Maintain
50m³	11 hours	1-2 hours
70m³	16 hours	2-3 hours
90m³	20 hours	2-4 hours
110m³	25 hours	3-5 hours

💡 Pro Tips for Faster Heating:

• Use a pool cover to reduce heat loss by up to 70%
• Run the heat pump during the warmest part of the day for optimal efficiency
• Ensure proper water circulation with adequate flow rate (10m³/h recommended)
• Minimize pool usage during initial heat-up period

💰 Running Cost Analysis

Estimated Operating Costs vs. Alternative Heating Methods

Based on average UK energy prices (2025):

• Electricity: £0.24 per kWh
• Natural Gas: £0.06 per kWh
• Pool Volume: 80m³
• Maintaining 28°C from April to September

Heating Method	Annual Cost	Monthly Cost (6 months)	Efficiency
Pro Elyo Touch PET-25	£720	£120	COP 6 avg
Standard Electric Heater	£2,880	£480	100% efficient
Gas Heater (80% efficient)	£1,440	£240	80% efficient
Standard Heat Pump (COP 4)	£1,080	£180	COP 4

Annual Savings with PET-25:

• vs. Electric: £2,160 (75% savings)
• vs. Gas: £720 (50% savings)
• vs. Standard Heat Pump: £360 (33% savings)

Note: Costs are estimates based on average usage patterns. Actual costs depend on ambient temperature, pool insulation, usage, and local energy rates.

🌟 Key Features & Benefits

Full Inverter Technology

Benefit: Variable-speed compressor and fan automatically adjust to match your pool’s exact heating requirements, eliminating energy-wasting on/off cycles and reducing wear on components.

Ultra-Wide Operating Range (-20°C to +43°C)

Benefit: Enjoy reliable heating even during harsh UK winters. Unlike conventional heat pumps that struggle below 5°C, the PET-25 maintains performance in extreme cold.

Premium Titanium Heat Exchanger

Benefit: Complete saltwater compatibility with superior corrosion resistance. Guaranteed durability for pools using salt chlorination systems.

Modern LED Touch Screen Interface

Benefit: Intuitive controls make operation effortless. Clear temperature display, mode selection, and system status at your fingertips.

Weather-Resistant Construction

Benefit: Durable ABS plastic housing with galvanized steel protection grille ensures years of reliable outdoor performance in all weather conditions.

Smart Connectivity Ready (Optional)

Benefit: Add the iQBridge RS module for remote control via the iAquaLink®+ mobile app. Adjust temperature and settings from anywhere, anytime.

Advanced Automatic Defrosting

Benefit: Maintains optimal performance in cold conditions without manual intervention. The system automatically detects and removes ice build-up.

📊 Complete Technical Specifications

Performance Data

Specification	Value
Model	PET-25
Part Number	74171
Heating Capacity (Max)	25.5 kW
Heating Capacity (Min)	4.7 kW

Performance at 28°C Air / 28°C Water / 80% Humidity

Specification	Maximum	Minimum
Heating Capacity	25.5 kW	4.7 kW
Power Consumption	4.2 kW	0.3 kW
COP	6	16

Performance at 15°C Air / 26°C Water / 70% Humidity

Specification	Maximum	Minimum
Heating Capacity	17 kW	4 kW
Power Consumption	3.9 kW	0.5 kW
COP	4.5	8

Electrical Specifications

Specification	Value
Voltage	220-240V / 1N~ / 50Hz
Rated Current	13.2A
Minimum Circuit Breaker	20A

Hydraulic Specifications

Specification	Value
Advised Water Flow	10m³/h
Water Connection	50mm
Maximum Allowable Pressure	4.2 MPa

Environmental & Physical

Specification	Value
Noise Level (at 1m)	41-56 dB(A)
Protection Rating	IPX4 (splash-proof)
Refrigerant Type	R32 (eco-friendly)
Refrigerant Quantity	1.9 kg
Global Warming Potential (GWP)	675
CO2 Equivalent	1.28 tonnes
Net Weight	125 kg
Gross Weight	143 kg

📦 What’s Included

Your Pro Elyo Touch PET-25 comes complete with everything needed for installation:

✅ 1× Winter Cover – Protects your investment during off-season ✅ 4× Anti-Vibration Feet – Reduces noise transmission and stabilizes unit ✅ Condensate Drainage Kit – Complete system for moisture management ✅ 1× 10m Modbus Signal Wire – For connection to Fluidra Connect box ✅ 2× PVC Fittings – 50mm water connection assemblies

🔧 Installation Requirements & Clearances

Space Requirements

Minimum Clearances for Optimal Performance:

• Front (Air Intake): 1.5m clear space
• Top (Air Outlet): 2.5m clear space above unit
• Sides: 0.5m each side
• Rear: 0.3m from wall

Important Considerations: ⚠️ Never install in an enclosed space – adequate ventilation is critical ⚠️ Avoid areas where discharged cool air can recirculate to the intake ⚠️ Position away from bedroom windows to minimize noise impact ⚠️ Ensure level, stable surface capable of supporting 143kg

Electrical Requirements

• Dedicated 20A circuit breaker required
• Professional installation by qualified electrician mandatory
• Unit must be properly earthed/grounded per local electrical codes
• Electrical supply should be within 3m of unit location

Hydraulic Requirements

• Recommended by-pass kit installation (allows easy winterization)
• Water flow rate must be maintained at 10m³/h
• Install after filtration system and before return to pool
• Chemical feeders must be installed downstream of heat pump
• Flow switch included to prevent operation without water flow

❓ Frequently Asked Questions

How does the Pro Elyo Touch compare to gas heaters?

The PET-25 offers superior efficiency and significantly lower operating costs compared to gas heaters. While gas heaters can heat pools more quickly initially, heat pumps cost 50-75% less to operate over a season. Heat pumps are also environmentally friendlier, producing zero direct emissions and qualifying for many green energy incentives.

Can this heat pump work in UK winters?

Absolutely! The Pro Elyo Touch is specifically engineered for harsh climates, operating effectively down to -20°C ambient temperature. While heating capacity reduces in colder weather, it continues providing reliable performance when most standard heat pumps fail. The automatic defrost system ensures continuous operation without ice build-up issues.

How loud is the unit during operation?

The PET-25 operates remarkably quietly, especially in Silent Mode. At just 41dB(A) at 1 meter distance (quieter than a normal conversation), it’s one of the quietest heat pumps available. In maximum Boost Mode, it reaches 56dB(A)—about the level of a quiet office. The Full Inverter Technology and vibration dampening feet significantly reduce operational noise.

Is it compatible with saltwater pools?

Yes, completely! The titanium heat exchanger is specifically designed for saltwater systems, offering exceptional corrosion resistance. This makes the PET-25 ideal for pools using salt chlorination, coastal locations with high salt air exposure, or any chemically treated pool environment.

How long will it take to heat my pool initially?

Initial heat-up time depends on your pool volume, starting temperature, and ambient conditions. For a typical 80m³ pool raising temperature by 10°C, expect approximately 35-40 hours. Using a pool cover reduces this significantly. See our heat-up calculator table above for specific scenarios. Once at temperature, the inverter technology maintains it efficiently with minimal daily runtime.

What ongoing maintenance is required?

Maintenance is minimal but essential:

• Weekly: Visual inspection for debris around unit
• Monthly: Clean air inlet grille, check water flow
• Seasonally: Professional service recommended before heating season
• Winter: Drain water from heat exchanger if temperatures drop below 0°C for extended periods (unless unit will remain operational)

The included winter cover protects the unit during off-season storage.

Can I control it remotely?

Yes, with the optional iQBridge RS module (sold separately), you can connect the PET-25 to the iAquaLink®+ mobile app. This enables full remote control including temperature adjustment, mode selection, scheduling, and system monitoring from your smartphone or tablet anywhere with internet access.

What warranty is provided?

The Astral Pool Pro Elyo Touch typically comes with a manufacturer’s warranty (specific terms vary by retailer). We recommend verifying warranty details with your supplier at time of purchase, including coverage for the compressor, heat exchanger, and electronic components.

How energy-efficient is it compared to standard heat pumps?

Exceptionally efficient! With a maximum COP of 16, it’s approximately 2-3 times more efficient than standard on/off heat pumps. The Full Inverter Technology allows continuous modulation between 4.7kW and 25.5kW output, matching exact heating demands rather than cycling on and off. This results in 30-40% energy savings compared to non-inverter models.

Will it heat my pool to spa temperatures (38-40°C)?

While the PET-25 excels at maintaining comfortable swimming temperatures (26-30°C), it’s not designed for spa-level heating. For spa or hot tub applications requiring higher temperatures, Astral Pool offers dedicated spa heat pump models optimized for smaller volumes and higher temperature targets.

What size pool is this model best suited for?

The PET-25 is ideally suited for pools between 60-120m³ (approximately 60,000-120,000 litres). For smaller pools (under 60m³), consider the PET-19 or lower capacity models for better efficiency. For pools exceeding 120m³, the PET-30 or PET-35 models would provide more appropriate heating capacity.

How does it perform during shoulder seasons (spring/autumn)?

Excellent! The spring and autumn periods are actually when the PET-25 performs most efficiently. At moderate ambient temperatures (10-20°C), the unit operates in its optimal efficiency zone with COP values of 8-12, providing economical heating while extending your swimming season by several months compared to unheated pools.

🌍 Environmental Benefits

Eco-Friendly by Design

R32 Refrigerant: Lower environmental impact with GWP of 675 (compared to 2088 for older R410A refrigerants)

Energy Efficiency: Reduces carbon footprint by up to 75% compared to electric resistance heaters

No Direct Emissions: Operates without combustion, producing zero direct CO2, NOx, or other pollutants

Renewable Energy Compatible: Pairs perfectly with solar PV systems for nearly carbon-neutral pool heating

Long Service Life: Durable construction means fewer replacements and less waste over decades of use

📥 Documentation & Resources

While specific product manuals were not linked on the original retailer page, official Astral Pool documentation for the Pro Elyo Touch range is available through:

📄 User & Installation Manuals Official Astral Pool Pro Elyo Touch documentation can be found on manufacturer websites and authorized manual repositories including Manualzz and ManualsLib.

The Bottom Line

The Astral Pool Pro Elyo Touch PET-25 represents the pinnacle of pool heating technology. Its combination of powerful 25.5kW output, industry-leading efficiency (COP up to 16), whisper-quiet operation, and all-weather reliability makes it the smart choice for discerning pool owners.

Invest in comfort. Invest in efficiency. Invest in the Pro Elyo Touch PET-25.

Whether you’re extending your swimming season, maintaining year-round pool readiness, or simply want the most efficient heating solution available, the PET-25 delivers exceptional performance that pays for itself through energy savings.

Ready to transform your pool experience? The Pro Elyo Touch PET-25 is in stock and available for immediate dispatch from Parts4Tubs.