🌊 X20 Inverter 26.5kW Full Inverter Heat Pump for Large Swimming Pools – X20-26
Unmatched Heating Power with Intelligent Efficiency for Very Large Pools
Transform your large swimming pool into a year-round luxury with the Fairland InverX20 X20-26 – one of the most powerful single-phase heat pumps available. Delivering an impressive 26.5 kW in Turbo Mode, this advanced full-inverter heat pump combines rapid heating, whisper-quiet operation, and exceptional energy efficiency to keep your pool perfectly warm from early spring through late autumn.
Whether you’re heating a large residential pool or managing a light commercial facility, the X20-26 offers the perfect blend of power, efficiency, and intelligent control.
💡 Why Choose the X20-26 Heat Pump?
Ultimate Power Meets Smart Efficiency
The InverX20 X20-26 isn’t just powerful – it’s intelligent. Using cutting-edge TurboSilence® full-inverter technology, this heat pump automatically adjusts compressor and fan speeds to match your exact heating needs, delivering maximum efficiency while minimizing energy consumption and noise.
✅ Rapid Pool Heating – 26.5 kW Turbo output heats your pool faster than conventional heat pumps
✅ Exceptional Efficiency – Seasonal COP up to 20.5 means you get over 20 kW of heat for every 1 kW of electricity
✅ Ultra-Quiet Operation – Just 44-50 dB(A) at 1m, quieter than normal conversation
✅ All-Season Performance – Operates efficiently in temperatures from -20°C to +43°C
✅ Smart Wi-Fi Control – Monitor and control your pool temperature from anywhere
✅ Premium Components – Mitsubishi DC inverter compressor and 3D titanium heat exchanger
✅ Industry-Leading Warranty – 7 years on parts, 15 years on compressor and heat exchanger
🎯 Perfect For
- Large Residential Pools – 60m³ to 120m³ (45,000 to 95,000 litres)
- Extended Swimming Seasons – Early spring through late autumn
- Noise-Sensitive Locations – Residential areas, near bedrooms or neighbors
- Energy-Conscious Pool Owners – Significantly lower running costs than gas or electric heaters
- Light Commercial Use – Small hotel pools, B&Bs, holiday lets
- Year-Round Swimming – When combined with a pool enclosure
📄 Downloads & Documentation
Important Product Information
📥 Installation Manual – Complete installation guidelines and technical requirements (opens in new tab)
📥 User Guide – Operating instructions and maintenance schedules (opens in new tab)
📥 Technical Datasheet – Detailed performance specifications and capacity charts (opens in new tab)
🔥 Three Intelligent Operating Modes
The X20-26 adapts to your exact needs with three flexible operating modes:
Turbo Mode (100-120% Capacity)
- When to Use: Initial pool heat-up, cold weather, or when you need rapid temperature increase
- Heating Output: Up to 26.5 kW
- Best For: Getting your pool swim-ready quickly
Smart Mode (20-100% Capacity)
- When to Use: Normal daily operation for balanced heating and efficiency
- Heating Output: Variable 4.4 – 22.0 kW
- Best For: Maintaining temperature with optimal energy efficiency
Silence Mode (20-60% Capacity)
- When to Use: Evening/nighttime operation in noise-sensitive environments
- Heating Output: 4.4 – 13.2 kW
- Best For: Ultra-quiet operation near bedrooms or neighbors
⚡ Outstanding Energy Efficiency
Save Money Every Swimming Season
The X20-26’s inverter technology delivers exceptional efficiency that dramatically reduces your heating costs:
| Operating Condition | COP (Efficiency Rating) | What This Means |
|---|---|---|
| Optimal Conditions (26°C air) | Up to 20.5 | Get 20.5 kW heat for every 1 kW electricity |
| 50% Load | ~15.0 | 15 kW of heat per 1 kW electricity |
| Mild Weather (15°C air) | 5.2 – 8.7 | 5-9 kW of heat per 1 kW electricity |
| Cool Weather (7°C air) | 4.5 – 7.0 | 4-7 kW of heat per 1 kW electricity |
Seasonal Average COP: Over 15 – This means the X20-26 is typically 1,500% efficient!
💰 Running Cost Comparison
Example: Heating an 80,000L (80m³) Pool from 18°C to 28°C
| Heating Method | Approximate Cost* | Time Required |
|---|---|---|
| X20-26 Heat Pump | £35 – £55 | 24-36 hours |
| Gas Boiler | £180 – £250 | 12-18 hours |
| Electric Heater | £320 – £450 | 18-24 hours |
Based on UK energy prices: 24p/kWh electricity, 6p/kWh gas. Actual costs vary by season, starting temperature, and local energy rates.
Annual Savings: Pool owners typically save £800-£1,500 per season compared to gas heating, and £1,500-£2,500 compared to electric heating.
⏱ Pool Heat-Up Time Estimates
How Long Will It Take to Heat My Pool?
Heat-up times depend on pool volume, starting temperature, ambient air temperature, and whether you use a pool cover. The tables below show estimated times for the X20-26 in different scenarios:
Optimal Conditions (Air 20-26°C, Using Pool Cover)
| Pool Volume | 5°C Rise (23°C→28°C) | 10°C Rise (18°C→28°C) | 15°C Rise (13°C→28°C) |
|---|---|---|---|
| 60,000L (60m³) | 13-16 hours | 26-32 hours | 39-48 hours |
| 80,000L (80m³) | 17-21 hours | 35-42 hours | 52-63 hours |
| 100,000L (100m³) | 22-27 hours | 43-53 hours | 65-80 hours |
| 120,000L (120m³) | 26-32 hours | 52-63 hours | 78-96 hours |
Cooler Conditions (Air 10-15°C, Using Pool Cover)
| Pool Volume | 5°C Rise (23°C→28°C) | 10°C Rise (18°C→28°C) |
|---|---|---|
| 60,000L (60m³) | 19-24 hours | 38-48 hours |
| 80,000L (80m³) | 25-32 hours | 51-64 hours |
| 100,000L (100m³) | 32-40 hours | 64-80 hours |
| 120,000L (120m³) | 38-48 hours | 76-96 hours |
⚠️ Important Notes:
- Times shown are estimates and assume continuous operation with a pool cover
- Without a pool cover, heat-up times can increase by 50-100% due to evaporation losses
- Wind, humidity, and overnight cooling significantly affect actual heating times
- Initial heat-up takes longer; maintaining temperature requires much less energy
- Always use a pool cover when not swimming to maximize efficiency and reduce heating time
💡 Pro Tip: For fastest results, start heating in Turbo Mode during daylight hours when air temperatures are highest, then switch to Smart Mode for maintenance.
🌡️ Recommended Pool Sizing
Is the X20-26 Right for Your Pool?
| Pool Volume | Suitability | Expected Performance |
|---|---|---|
| 40-60m³ (31,000-47,000L) | ✅ Excellent | Fast heat-up, very efficient temperature maintenance |
| 60-80m³ (47,000-63,000L) | ✅ Ideal | Perfect balance of capacity and efficiency |
| 80-100m³ (63,000-79,000L) | ✅ Very Good | Optimal sizing for this model |
| 100-120m³ (79,000-95,000L) | ✅ Good | Adequate heating, may require longer heat-up times |
| 120-140m³ (95,000-110,000L) | ⚠️ Borderline | Consider a larger model or dual-unit setup |
| 140m³+ (110,000L+) | ❌ Undersized | Recommend larger model or multiple units |
Need Help Sizing? Pool volume = Length × Width × Average Depth (all in meters)
🔧 Key Technical Features
TurboSilence® Full-Inverter Technology
Unlike traditional on/off heat pumps, the X20-26 uses advanced inverter technology to continuously adjust compressor and fan speeds. This provides:
- Better Efficiency – Operates at the exact capacity needed, no wasted energy
- Quieter Operation – No jarring start-up noises or loud cycling
- Longer Lifespan – Less mechanical stress on components
- Faster Heating – Can boost to 120% capacity when needed
3D Spiral Titanium Heat Exchanger
- Superior Heat Transfer – Unique 3D spiral design increases surface area by 35%
- Corrosion Resistant – Pure titanium construction resists chlorine, salt, and chemicals
- 15-Year Warranty – Exceptional durability and longevity
- Higher Flow Rates – Efficient heat transfer even with lower flow rates
Mitsubishi Twin-Rotary DC Inverter Compressor
- Premium Quality – World-renowned Japanese engineering
- Low Vibration – Smooth, balanced operation reduces noise and wear
- High Reliability – Proven technology in millions of HVAC systems worldwide
- 15-Year Warranty – Confidence in long-term performance
Whisper-Quiet Operation
| Distance | Noise Level | Comparable To |
|---|---|---|
| 1 meter | 44-50 dB(A) | Quiet conversation, library |
| 10 meters | 24-30 dB(A) | Whisper, rustling leaves |
Perfect for installations near bedrooms, patios, or noise-sensitive neighbors.
Smart Wi-Fi Control
- Touchscreen Controller – Easy-to-read display with intuitive controls
- Wi-Fi App Control – Monitor and adjust settings from your smartphone
- Programmable Schedules – Set heating times to match your routine
- Real-Time Monitoring – Track water temperature, power consumption, and system status
- Remote Alerts – Receive notifications of any issues or maintenance needs
📊 Complete Technical Specifications
| Specification | Details |
|---|---|
| Model | Fairland InverX20 X20-26 |
| Heating Capacity (Turbo Mode) | 26.5 kW @ Air 26°C / Water 26°C |
| Heating Capacity (Smart Mode) | 22.0 kW @ Air 26°C / Water 26°C |
| COP Range | 7.0 – 20.5 (Seasonal Average >15) |
| COP at 50% Load | ~15.0 |
| Heating Output @ 15°C Air | 16.5 kW (Turbo) / 14.0 kW (Smart) |
| COP @ 15°C Air | 5.2 – 8.7 |
| Heating Output @ 7°C Air | 14.0 kW (Turbo) / 11.8 kW (Smart) |
| COP @ 7°C Air | 4.5 – 7.0 |
| Power Input Range | 0.30 – 3.7 kW |
| Input Current Range | 1.3 – 15.5 A |
| Power Supply | 230V / 1 Phase / 50Hz |
| Noise Level @ 1m | 44.0 – 50.0 dB(A) |
| Noise Level @ 10m | 24.0 – 30.0 dB(A) |
| Water Flow Requirement | 7 – 9 m³/h |
| Water Connection Size | Ø 50mm |
| Operating Ambient Temperature | -20°C to +43°C |
| Controller | Touchscreen + Wi-Fi App Control |
| Heat Exchanger | 3D Titanium Spiral |
| Compressor Type | Mitsubishi DC Inverter Twin-Rotary |
| Refrigerant | R32 (Environmentally Friendly) |
| Cabinet Material | Anti-UV Aluminium-Alloy |
| Dimensions (L × W × H) | 1000 × 470 × 720 mm |
| Net Weight | Approx. 75 kg |
| Certifications | CE, RoHS, EMC Compliant |
| Warranty – Parts | 7 Years |
| Warranty – Compressor & Heat Exchanger | 15 Years |
🛡️ Comprehensive Safety Features
Built-In Protection for Peace of Mind
The X20-26 includes multiple safety systems to protect your investment:
✅ Water Flow Detection – Automatically shuts down if water flow is insufficient
✅ High/Low Refrigerant Pressure Protection – Prevents compressor damage
✅ Freeze Protection System – Protects unit and plumbing in cold weather
✅ Overheat Protection – Prevents damage from excessive temperatures
✅ Electrical Leakage Protection – Built-in safety cutoff for electrical faults
✅ Automatic Restart After Power Failure – Resumes operation with saved settings
✅ Hot Gas Defrost System – Maintains efficiency in cold weather
✅ Corrosion-Resistant Construction – Titanium heat exchanger and anti-UV casing
🏗️ Installation Requirements & Clearances
What You Need to Know Before Installation
Electrical Requirements
- Power Supply: 230V, Single Phase, 50Hz
- Circuit Protection: 16A circuit breaker recommended
- Cable Specification: Minimum 2.5mm² cable
- Professional Installation Required: Must be installed by qualified electrician
Minimum Clearance Requirements
| Side | Minimum Clearance | Recommended |
|---|---|---|
| Front (Air Intake) | 300mm | 500mm |
| Rear (Air Discharge) | 500mm | 1000mm |
| Left Side | 300mm | 500mm |
| Right Side | 300mm | 500mm |
| Top | 1500mm | 2000mm |
⚠️ Important Installation Notes:
- Never install in an enclosed space – requires free airflow
- Avoid positioning discharge air toward windows, doors, or neighboring properties
- Install on a solid, level base (concrete pad recommended)
- Provide adequate drainage for condensate
- Keep away from plants, shrubs, or obstructions that could block airflow
- Consider noise impact on outdoor living areas and neighbors
Plumbing Requirements
- Water Connections: 50mm (2 inch) unions provided
- Flow Rate: 7-9 m³/h (1,944-2,500 gallons/hour)
- Bypass Valve: Highly recommended for system protection
- Inline Filter: Essential to protect heat exchanger from debris
❓ Frequently Asked Questions
How much does it cost to run the X20-26?
Running costs depend on how much heating is needed, which varies by season, pool size, and usage. As a guide:
- Initial Heat-Up (18°C to 28°C, 80m³ pool): £35-£55 in electricity
- Daily Maintenance (spring/autumn): £2-£5 per day
- Daily Maintenance (summer): £0.50-£2 per day
- Typical Season (May-September, 80m³ pool): £250-£450 total
Using a pool cover can reduce running costs by 50-70%. The X20-26 is typically 4-5 times cheaper to run than gas heating and 6-8 times cheaper than electric heating.
Can the X20-26 heat my pool in winter?
The X20-26 can operate down to -20°C ambient temperature, but efficiency decreases in cold weather. It’s designed for extended season use (April-October in the UK) rather than full winter heating. For year-round swimming, you’d need:
- A pool enclosure or cover to reduce heat loss
- Realistic expectations about heat-up times in cold weather
- Possibly a supplementary heater for very cold periods
Most pool owners find heat pumps ideal for extending the season by 2-4 months on either end of summer.
How loud is this heat pump?
Very quiet! At 44-50 dB(A) from 1 meter away, it’s quieter than normal conversation. From 10 meters, it’s only 24-30 dB(A) – barely audible. You can use Silence Mode for even quieter operation at night.
Do I need a pool cover?
While not mandatory, a pool cover is highly recommended and will:
- Reduce heat-up time by 40-60%
- Cut running costs by 50-70%
- Prevent evaporation (the biggest source of heat loss)
- Keep your pool cleaner
- Pay for itself in energy savings within one season
The X20-26 will work without a cover, but you’ll use much more energy and wait longer for your pool to heat up.
What’s the difference between Turbo, Smart, and Silence modes?
- Turbo Mode: Maximum power (up to 26.5 kW) for fastest heating. Use when you need your pool ready quickly or in cold weather.
- Smart Mode: Variable output (4.4-22.0 kW) that automatically adjusts for best efficiency. Use for normal daily operation.
- Silence Mode: Reduced power (4.4-13.2 kW) for ultra-quiet operation. Use at night or in noise-sensitive situations.
Most users run Turbo for initial heat-up, then switch to Smart for daily maintenance.
How long will the X20-26 last?
With proper maintenance, expect 15-20+ years of reliable service. The X20-26 features premium components (Mitsubishi compressor, titanium heat exchanger) and is backed by an industry-leading warranty: 7 years on parts, 15 years on the compressor and heat exchanger. Regular maintenance includes:
- Cleaning air filters monthly during use
- Annual professional inspection
- Keeping the unit clear of leaves and debris
- Maintaining proper water chemistry in your pool
Can I install this myself?
No – professional installation is required. The X20-26 requires:
- Qualified electrician for electrical connections
- Experienced pool technician for plumbing integration
- Proper positioning, clearances, and mounting
- Commissioning and testing
DIY installation will void the warranty and may be illegal under electrical regulations. Professional installation typically costs £400-£800 depending on site complexity.
What size pool is the X20-26 suitable for?
The X20-26 is ideal for pools from 60m³ to 100m³ (47,000-79,000 litres). It can handle pools up to 120m³, though heat-up times will be longer. For pools over 120m³, consider a larger model or dual-unit configuration.
To calculate your pool volume: Length (m) × Width (m) × Average Depth (m) = Volume in m³
Does it work with saltwater pools?
Yes, absolutely! The titanium heat exchanger is specifically designed for saltwater and chlorine resistance. The X20-26 works with:
- Traditional chlorine pools
- Saltwater chlorinator systems
- Mineral systems
- Ozone systems
Always maintain proper water chemistry regardless of sanitizer type.
What maintenance is required?
The X20-26 is low-maintenance:
Monthly (during use):
- Check and clean air intake filters
- Ensure area around unit is clear of debris
Seasonally:
- Professional inspection before swimming season
- Check refrigerant levels (by technician)
- Inspect electrical connections
- Clean heat exchanger if necessary
Winter (if not used):
- Drain water from heat exchanger
- Cover unit or move to protected storage
- Ensure freeze protection is activated
Can I control it remotely?
Yes! The X20-26 includes built-in Wi-Fi and works with a smartphone app. You can:
- Monitor water temperature in real-time
- Adjust temperature settings remotely
- Switch between operating modes
- Set heating schedules
- Receive alerts and notifications
- Track energy consumption
The touchscreen controller on the unit provides the same functionality locally.
What warranty is included?
One of the best warranties in the industry:
- 7 Years on all parts
- 15 Years on the compressor
- 15 Years on the titanium heat exchanger
This exceptional warranty reflects the quality and durability of the X20-26. Registration may be required – check with your installer or Parts4Tubs for details.
🌟 Customer Benefits Summary
What Makes the X20-26 Special?
| Benefit | What It Means for You |
|---|---|
| 💰 Ultra-Efficient | Save £800-£1,500 per season vs. gas heating |
| ⚡ Powerful Heating | Heat large pools quickly with 26.5 kW output |
| 🔇 Whisper-Quiet | Won’t disturb you or your neighbors |
| 🌡️ All-Season Performance | Works efficiently from -20°C to +43°C |
| 📱 Smart Control | Monitor and adjust from anywhere via Wi-Fi |
| 🛡️ Premium Build Quality | Mitsubishi compressor and titanium exchanger |
| ⚙️ Three Intelligent Modes | Turbo for speed, Smart for efficiency, Silence for quiet |
| 🏆 Industry-Leading Warranty | 15 years on key components |
| ♻️ Environmentally Friendly | R32 refrigerant with low global warming potential |
🎓 Understanding COP (Coefficient of Performance)
Why Heat Pumps Are So Efficient
COP is the ratio of heat output to electrical input. A COP of 5.0 means you get 5 kW of heating for every 1 kW of electricity used – that’s 500% efficiency!
The X20-26’s COP varies with conditions:
- Warm weather (26°C air): COP up to 20.5 – incredibly efficient
- Mild weather (15°C air): COP 5.2-8.7 – still excellent
- Cool weather (7°C air): COP 4.5-7.0 – good efficiency maintained
Seasonal average COP over 15 means the X20-26 delivers exceptional efficiency across the entire swimming season.
✅ Ready to Order?
The Fairland InverX20 X20-26 represents the pinnacle of pool heating technology – combining raw power with intelligent efficiency, ultra-quiet operation with robust reliability, and sophisticated controls with user-friendly operation.
Perfect for:
- Large residential pools (60-120m³)
- Energy-conscious pool owners
- Extended swimming seasons
- Noise-sensitive installations
- Those who want the best technology and longest warranty
What’s Included:
- X20-26 Heat Pump Unit
- Touchscreen Controller with Wi-Fi
- 50mm Water Connection Unions
- Installation Manual & Documentation
- 7-Year Parts Warranty
- 15-Year Compressor & Heat Exchanger Warranty
📞 Need Expert Advice?
Not sure if the X20-26 is right for your pool?
Contact the Parts4Tubs team for personalized advice:
- Pool sizing recommendations
- Heat-up time estimates for your specific pool
- Installation requirements and costs
- Running cost calculations
- Comparison with other models
- Finance options
Get the right heat pump for your pool the first time.
🌍 Environmentally Responsible Heating
The X20-26 uses R32 refrigerant, which has:
- Low Global Warming Potential (GWP) – 67% lower than older R410A refrigerant
- Better Energy Efficiency – More heat transfer per unit
- Ozone Friendly – Zero ozone depletion potential
- Future-Proof – Meets latest environmental regulations
By choosing the X20-26, you’re investing in technology that’s better for the environment while saving money on energy costs.
⚠️ Professional Installation Disclaimer: The X20-26 must be installed by qualified professionals in accordance with local building codes and electrical regulations. Improper installation may void warranty, create safety hazards, and result in poor performance. Always use certified installers for electrical and plumbing work.
⚠️ Performance Disclaimer: Heat-up times, running costs, and COP values are estimates based on typical conditions. Actual performance varies with ambient temperature, pool size, insulation, cover usage, wind exposure, starting water temperature, and other factors. Always use a pool cover to maximize efficiency and minimize heating times.










