🌊 VBEX Full Inverter 20kW Swimming Pool Heat Pump – 1 Phase Horizontal Design with WiFi Control
Transform your pool into a year-round oasis with the powerful VBEX 20kW Full Inverter Heat Pump – engineered for larger residential pools and light commercial applications. This premium heating system combines cutting-edge inverter technology with a legendary Mitsubishi compressor to deliver exceptional performance, incredible energy savings, and whisper-quiet operation.
Whether you’re heating a 50m² family pool or managing a boutique spa installation, this intelligent heat pump adapts to your exact needs while slashing energy costs by up to 75% compared to traditional gas heaters.
💡 Why Choose the VBEX 20kW Full Inverter Heat Pump?
Unmatched Efficiency Meets Powerful Performance
Unlike conventional on/off heat pumps that waste energy through constant cycling, the VBEX features genuine Full Inverter Technology that modulates output from 25% to 100% capacity. This means your heat pump runs at exactly the power level needed – no more, no less – resulting in:
✅ Up to 40% lower electricity bills compared to fixed-speed heat pumps ✅ Precise temperature control within ±0.5°C for perfect swimming comfort ✅ Extended equipment lifespan with reduced mechanical stress ✅ Quieter operation with minimal noise during maintenance mode ✅ Faster ROI through dramatic energy savings
🏆 Key Features That Set This Heat Pump Apart
⚡ Premium Mitsubishi Compressor
The heart of any heat pump is its compressor, and this unit features a genuine Mitsubishi rotary compressor – the gold standard in HVAC reliability. Known for:
- Exceptional durability with 15+ year design life
- Superior efficiency across all operating conditions
- Ultra-low vibration for near-silent operation
- Consistent performance even at -10°C ambient temperatures
- Industry-leading warranty support
🌐 Integrated WiFi Smart Control
Control your pool temperature from anywhere with built-in WiFi connectivity:
- Adjust settings remotely via smartphone or tablet
- Monitor real-time energy consumption
- Receive maintenance alerts and diagnostics
- Set automated heating schedules
- Track performance metrics and operating history
- Compatible with iOS and Android devices
🔇 Whisper-Quiet Operation
Advanced acoustic engineering delivers remarkably quiet performance:
- Sound level as low as 48 dB(A) in eco-mode (quieter than a normal conversation)
- Variable-speed fan automatically reduces noise during maintenance heating
- Aerodynamic fan blade design minimizes air turbulence
- Acoustic housing with sound-dampening materials
- Perfect for residential areas with noise restrictions
⭐ A-Rated Energy Efficiency
Proudly certified with an “A” energy rating, ensuring:
- COP (Coefficient of Performance) up to 5.5+ at optimal conditions
- For every 1 kW of electricity consumed, you get 5.5 kW of heat output
- Dramatically lower running costs vs gas, oil, or electric heaters
- Reduced carbon footprint for eco-conscious pool owners
- Qualifies for energy efficiency rebates in many regions
🎯 Patented Air Technology Design
Proprietary airflow optimization delivers:
- Enhanced heat exchange efficiency
- Improved performance in challenging weather
- Better operation in high humidity conditions
- Reduced frost buildup in cold weather
- Extended operational range down to -10°C
🛡️ Built to Last
Premium construction for long-term reliability:
- Powder-coated corrosion-resistant metal housing
- Marine-grade coated heat exchanger fins
- UV-resistant top panel and grille
- Winter cover included for off-season protection
- Heat protection tray included to safeguard installation surface
- Weather-sealed electrical connections
- Titanium heat exchanger for chlorine/saltwater resistance
📊 Complete Technical Specifications
| Specification | Details |
|---|---|
| Model Number | VBEX Full Inverter 20/1F H8 |
| Heating Capacity | 20 kW (68,240 BTU/h) |
| Power Supply | 1 Phase, 220-240V, 50Hz |
| Inverter Technology | Full DC Inverter (25-100% modulation) |
| Compressor Type | Mitsubishi Rotary DC Inverter |
| Energy Efficiency Rating | Class A |
| COP (A7/W26) | Up to 5.5 |
| COP (A15/W26) | Up to 6.2 |
| Refrigerant Type | R32 (low GWP, eco-friendly) |
| Refrigerant Charge | Pre-charged, ready to install |
| Heat Exchanger | Titanium tube-in-tube |
| WiFi Connectivity | Built-in WiFi module (included) |
| Control Interface | LED digital display with touch controls |
| Recommended Pool Size | 35-75 m² surface area |
| Suitable Pool Volume | 50-110 m³ |
| Water Flow Rate Required | 5-8 m³/h |
| Water Connection | 50mm pipe connections |
| Operating Ambient Temp | -10°C to +43°C |
| Max Water Temperature | 40°C |
| Sound Level (Eco Mode) | 48 dB(A) @ 1m |
| Sound Level (Max) | 58 dB(A) @ 1m |
| Power Consumption | 2.8-5.2 kW (variable) |
| Rated Current | 12-23A (variable) |
| Dimensions (L x W x H) | 1180 x 430 x 825 mm |
| Net Weight | 98 kg |
| Installation Type | Horizontal ground mount |
| Minimum Clearances | 500mm sides, 2000mm front (air discharge) |
| Defrost System | Intelligent auto-defrost with hot gas bypass |
| Protection Features | High/low pressure, overload, antifreeze, phase protection |
| Warranty | 2 years parts & labor (compressor: 5 years) |
| Included Accessories | Winter cover, heat protection tray, installation manual |
| SKU | 1751396020 |
| Manufacturer | VBEX |
📐 Downloads & Documentation
Important Product Resources
Currently, no downloadable technical documents are available for this product. Please contact us directly for:
We can provide technical specifications and installation guidance tailored to your specific setup.
🏊 Pool Sizing Guide – Is This Heat Pump Right For You?
Recommended Pool Sizes
| Pool Surface Area | Typical Volume | Suitability |
|---|---|---|
| 35-45 m² | 50-65 m³ | ✅ Excellent – Fast heating |
| 46-60 m² | 66-85 m³ | ✅ Ideal – Optimal performance |
| 61-75 m² | 86-110 m³ | ✅ Good – Adequate capacity |
| 76-90 m² | 111-130 m³ | ⚠️ Borderline – Extended heat-up times |
| 90+ m² | 130+ m³ | ❌ Undersized – Consider dual units |
Example Pool Dimensions
This 20kW heat pump is perfect for pools such as:
- 10m x 5m (50m²) at 1.3m average depth = 65m³ ✅ Excellent match
- 12m x 4m (48m²) at 1.5m average depth = 72m³ ✅ Ideal
- 8m x 6m (48m²) at 1.6m average depth = 77m³ ✅ Very good
- 14m x 5m (70m²) at 1.4m average depth = 98m³ ✅ Good performance
⏱️ Estimated Heat-Up Times
How quickly will your pool reach the perfect temperature?
The tables below provide estimated heat-up times based on your pool volume and desired temperature increase. These are calculated using the industry-standard formula and the VBEX’s 20kW heating capacity.
Formula Used: Time (hours) = (Pool Volume m³ × Temperature Rise °C × 1.16) ÷ 20 kW
Heat-Up Times for Common Pool Sizes
⚠️ Important: These are theoretical estimates under ideal conditions (15°C ambient, no wind, insulated pool). Real-world times may vary by ±20-30% based on weather, wind exposure, and pool insulation.
Small to Medium Pools (50-70 m³)
| Pool Volume | 5°C Rise | 10°C Rise | 15°C Rise |
|---|---|---|---|
| 50 m³ | 14.5 hours | 29 hours | 43.5 hours |
| 55 m³ | 16 hours | 32 hours | 48 hours |
| 60 m³ | 17.5 hours | 35 hours | 52 hours |
| 65 m³ | 19 hours | 38 hours | 57 hours |
| 70 m³ | 20 hours | 40 hours | 61 hours |
Example: A 60m³ pool at 15°C heated to 25°C (10°C rise) ≈ 35 hours (1.5 days)
Large Pools (75-110 m³)
| Pool Volume | 5°C Rise | 10°C Rise | 15°C Rise |
|---|---|---|---|
| 75 m³ | 22 hours | 44 hours | 65 hours |
| 80 m³ | 23 hours | 46 hours | 70 hours |
| 90 m³ | 26 hours | 52 hours | 78 hours |
| 100 m³ | 29 hours | 58 hours | 87 hours |
| 110 m³ | 32 hours | 64 hours | 96 hours |
Example: A 90m³ pool at 12°C heated to 27°C (15°C rise) ≈ 78 hours (3.2 days)
💡 Pro Tips for Faster Heating
✅ Use a pool cover – Reduces heat loss by up to 70%, cutting heating time nearly in half ✅ Heat overnight – Take advantage of off-peak electricity rates ✅ Start early in season – Gradual heating is more efficient than rapid temperature increases ✅ Maintain consistent temperature – Much cheaper than letting the pool cool and reheating ✅ Optimize water circulation – Ensure proper flow rate (5-8 m³/h) for maximum efficiency
💰 Running Cost Comparison – See Your Savings
Based on heating a 70m³ pool from 15°C to 28°C (13°C rise) and maintaining temperature for 6 months
| Heating Method | Estimated Annual Cost | CO₂ Emissions | Cost vs VBEX |
|---|---|---|---|
| VBEX 20kW Heat Pump | £520-780 | 850 kg/year | BASELINE |
| Gas Boiler (Natural Gas) | £1,850-2,100 | 3,200 kg/year | +256% more expensive |
| Oil Boiler | £2,400-2,800 | 4,100 kg/year | +346% more expensive |
| Electric Immersion Heater | £2,600-3,200 | 4,800 kg/year | +385% more expensive |
| LPG Gas Heater | £2,900-3,400 | 3,500 kg/year | +431% more expensive |
💡 Annual Savings vs Gas Heating: £1,120-1,580 💡 3-5 Year Payback Period based on installation cost vs gas heater savings
Assumptions: Electricity @ £0.24/kWh, Natural Gas @ £0.06/kWh, COP 5.0 average, 150 heating days, pool covered when not in use
🔧 Installation Requirements
Clearance Requirements
Minimum clearances for optimal performance and serviceability:
| Location | Minimum Clearance |
|---|---|
| Front (Air Discharge) | 2000mm (2 meters) |
| Left Side | 500mm |
| Right Side | 500mm |
| Rear (Air Intake) | 300mm |
| Top | 1000mm (no overhead obstructions) |
Ideal Installation Location
✅ Best Placement:
- On a solid, level concrete pad or paving slabs
- In open area with good air circulation
- Away from windows and neighboring properties (noise consideration)
- Protected from prevailing winds where possible
- Near pool equipment for easy plumbing integration
❌ Avoid:
- Enclosed spaces or tight corners
- Areas prone to leaf/debris accumulation
- Direct sun exposure all day (reduces efficiency)
- Locations where discharged cold air recirculates to intake
Electrical Requirements
⚡ Critical: This unit requires:
- Dedicated 32A circuit breaker
- RCD (residual current device) protection mandatory
- 3-core + earth cable, minimum 6mm²
- Professional electrician installation required
- Compliance with BS 7671 electrical regulations
Plumbing Requirements
🔧 Water Connections:
- 50mm inlet and outlet pipe connections
- Flow rate: 5-8 m³/h (adjust pool pump if needed)
- Install flow sensor and safety pressure switch (recommended)
- Bypass valve for summer operation (optional but recommended)
- Use appropriate PVC solvent cement or union connectors
🌡️ Seasonal Performance Expectations
Spring (March-May): Excellent Performance
- Ambient temps: 8-15°C
- COP: 4.5-5.5
- Typical heat-up from cold: 4-6 days to 26°C
- Best time to start heating for extended season
Summer (June-August): Peak Efficiency
- Ambient temps: 18-25°C
- COP: 5.5-6.2
- Maintenance heating only: 2-4 hours/day
- Lowest running costs of the year
Autumn (September-November): Very Good
- Ambient temps: 10-16°C
- COP: 4.5-5.2
- Gradual temperature decline – easy to maintain
- Cover becomes essential for efficiency
Winter Operation (December-February): Capable*
- Ambient temps: 0-8°C
- COP: 3.5-4.2
- Extended heating times required
- Pool cover absolutely essential
- Consider winter shutdown unless heated indoor pool
*This unit operates down to -10°C ambient but efficiency decreases below 5°C
❓ Frequently Asked Questions
1. How much does this heat pump cost to run?
The VBEX 20kW heat pump typically costs £2-4 per day to maintain pool temperature during the swimming season, depending on weather conditions, pool size, and whether you use a cover. Initial heat-up from cold will cost more (approximately £40-60 total) but once at temperature, maintenance costs are minimal. This is 70-80% cheaper than gas or electric heating.
2. How long does it take to heat my pool?
For a typical 60-70m³ pool, expect 1.5-2.5 days to achieve a 10°C temperature rise under good conditions (covered pool, mild weather). Larger pools or greater temperature increases will take longer. Using a solar cover can reduce heating time by up to 40% by preventing heat loss.
3. Can this heat pump work in winter?
Yes, the VBEX operates down to -10°C ambient temperature, but efficiency decreases in cold weather. For year-round swimming, you’ll need an insulated pool cover and should expect longer run times and higher costs in winter months. Most pool owners use heat pumps from April to October for best efficiency.
4. Is professional installation required?
Yes, absolutely. This heat pump requires:
- Qualified electrician for electrical connection (32A dedicated circuit)
- Experienced pool technician for plumbing and system integration
- Proper placement, clearances, and safety device installation
- Improper installation voids warranty and creates safety hazards
Budget £400-800 for professional installation depending on site complexity.
5. How noisy is this heat pump?
Very quiet! At 48-52 dB(A) in eco-mode (similar to a quiet conversation or refrigerator), and up to 58 dB(A) at maximum output. The inverter technology allows the unit to run at lower speeds most of the time, keeping noise minimal. Most users report that the heat pump is barely noticeable from inside their home.
6. What size pool pump do I need?
Your existing pool filtration pump should provide 5-8 m³/h (1,320-2,110 gallons/hour) flow rate through the heat pump. Most standard residential pool pumps meet this requirement. Too little flow triggers low-flow protection; too much flow reduces heating efficiency.
7. Do I need to add chemicals or maintain the heat pump?
The heat pump itself requires minimal maintenance:
- Keep air intake grilles clean and free of debris
- Check water flow sensor monthly
- Inspect electrical connections annually
- Professional service every 2-3 years recommended
Your pool water chemistry management remains unchanged – maintain proper chlorine, pH, and alkalinity as usual.
8. What’s the difference between inverter and non-inverter heat pumps?
Huge difference! Traditional on/off heat pumps run at full power until the target temperature is reached, then shut off completely, resulting in temperature swings and energy waste. Inverter heat pumps like the VBEX:
- Modulate output from 25-100% for precise control
- Use 30-40% less electricity
- Maintain steady temperature (±0.5°C)
- Run quieter during maintenance mode
- Last longer due to reduced mechanical stress
9. Can I control this heat pump remotely?
Yes! Built-in WiFi connectivity allows you to:
- Control temperature from your smartphone anywhere
- Monitor energy usage in real-time
- Set heating schedules and timers
- Receive alerts if issues occur
- Check operating status before you arrive home
The WiFi module is included and easy to set up.
10. What warranty is included?
The VBEX heat pump includes:
- 2-year comprehensive parts and labor warranty
- 5-year compressor warranty (Mitsubishi compressor)
- Extended warranty options available
- UK-based warranty support
Warranty requires professional installation and annual service documentation.
11. Will this work with my saltwater pool?
Absolutely! The titanium heat exchanger is specifically designed for saltwater and chlorinated pools. Titanium is highly resistant to corrosion and will provide decades of reliable service even with salt chlorination systems up to 6,000 ppm salt concentration.
12. How efficient is this compared to gas heating?
Dramatically more efficient! While a gas heater is approximately 80-90% efficient (some heat lost up the flue), this heat pump achieves COP 5.0-6.0, meaning it’s 500-600% efficient. For every £1 of electricity used, you get £5-6 worth of heating. This translates to running costs that are 75-80% lower than gas heating.
🎯 Perfect For These Applications
✅ Large Residential Pools (10m x 5m and larger) ✅ High-End Garden Pools requiring precise temperature control ✅ Holiday Lets & Rental Properties with guest pools ✅ Small Hotel or B&B Pools (light commercial use) ✅ Swim Spas requiring year-round heating ✅ Therapy Pools needing consistent warm temperatures ✅ Pool Heating Upgrades replacing inefficient gas/electric systems ✅ Eco-Conscious Pool Owners seeking sustainable heating solutions
✅ What’s Included in the Box
When you receive your VBEX 20kW heat pump, you’ll get:
✔️ VBEX Full Inverter 20/1F H8 heat pump unit (pre-charged with R32 refrigerant) ✔️ WiFi control module (built-in, WiFi-ready) ✔️ Digital controller with LED display ✔️ Winter protective cover (waterproof, UV-resistant) ✔️ Heat protection tray for installation surface ✔️ Installation and user manual ✔️ Quick-start guide ✔️ Warranty registration card
Not Included (supplied by installer): ❌ Electrical cables and circuit breaker ❌ Plumbing pipes and fittings ❌ Concrete pad or mounting base ❌ Water flow sensor (recommended) ❌ Bypass valve kit (recommended)
🚚 Delivery & Returns
Free Mainland UK Delivery Most orders delivered within 3-5 working days. Remote areas may require additional time.
Returns Policy 30-day return period for unused items in original packaging. Heat pumps that have been installed, electrically connected, or had refrigerant accessed are not eligible for return due to safety and regulatory requirements.
Technical Support Our experienced team is available to answer pre-purchase questions about compatibility, sizing, and installation requirements.
🏆 Why Buy From Parts4Tubs?
✅ Specialist Pool & Spa Retailer with extensive technical knowledge ✅ Competitive Pricing with genuine manufacturer products ✅ Fast Dispatch from UK warehouse – no long shipping delays ✅ Expert Advice Available – speak with experienced technicians ✅ Secure Payment with buyer protection ✅ Established Business serving the UK pool and hot tub industry
🛒 Ready to Transform Your Pool Heating?
The VBEX 20kW Full Inverter Heat Pump delivers:
- Exceptional energy efficiency with up to 80% cost savings
- Precise temperature control via WiFi smartphone app
- Whisper-quiet operation for peaceful enjoyment
- Premium Mitsubishi compressor reliability
- Professional-grade performance for larger pools
Make the smart investment in comfortable, affordable, eco-friendly pool heating.
Add to cart now and enjoy extended swimming seasons with dramatically reduced running costs!


