Aqua Inverter Turbo-Pro Silence 17.5kW Swimming Pool Heat Pump | Whisper-Quiet Smart Heating up to 21kW | WiFi Control | AXR21

🌡️ Transform your pool into a year-round paradise. This professional-grade inverter heat pump delivers powerful 17.5kW heating with Turbo boost to 21kW, ultra-quiet operation down to 22.9dB at 10m, and intelligent WiFi control.

Perfect for pools 40-75m³ (8,800-16,500 gallons). Three smart modes optimize performance while slashing energy costs up to 80% vs traditional heaters. 🔥

🎯 Why Pool Owners Choose This Heat Pump

Extended Swimming Season ⏰
Operates efficiently from -15°C to 43°C ambient temperature. Heat your pool from spring through autumn, adding months to your season.

Whisper-Quiet Technology 🤫
Revolutionary airflow design delivers just 22.9dB at 10m distance—quieter than a library. Enjoy peaceful poolside relaxation without compressor noise.

Smart Energy Savings 💰
Exceptional COP up to 15.0 means every 1kW of electricity produces 15kW of heat. Save hundreds annually vs gas or electric heaters.

Total WiFi Control 📱
Manage everything from your smartphone. Adjust temperature, switch modes, monitor performance—from anywhere.

⚡ Three Intelligent Heating Modes

🚀 Turbo Mode (21kW)
Maximum heating power for rapid pool warm-up. Heat 50m³ pool by 1°C in approximately 2.5 hours. Perfect for quick weekend heat-ups.

🧠 Smart Mode (17.5kW)
Intelligent auto-optimization balances speed and efficiency based on ambient and water temperature. Ideal for daily pool maintenance.

🌙 Silence Mode (60% capacity)
Ultra-quiet overnight operation. Run economically during off-peak electricity hours without disturbing neighbors.

📊 Complete Technical Specifications

Specification	Details
Model	AXR21
Heating Capacity (Smart)	17.5kW
Heating Capacity (Turbo)	21kW
Advised Pool Volume	40-75m³ (8,800-16,500 gallons)
Operating Temperature Range	-15°C to 43°C ambient
Water Temperature Range	18°C to 40°C
COP Performance	Up to 15.0 (at optimal conditions)
COP at 15°C Air/26°C Water	5.0-7.8 depending on mode
Sound Level (1m)	42.9-50.8 dB(A)
Sound Level (10m)	22.9-30.8 dB(A)
Power Supply	230V/1Ph/50Hz
Rated Input Power	0.31-3.08kW
Rated Current	1.35-13.4A
Recommended Water Flow	6.5-8.5m³/h
Water Connections	48.3mm (1.9″)
Dimensions (L×W×H)	995×432×750mm
Net Weight	70kg
Refrigerant	R32 eco-friendly gas
WiFi Control	iOS & Android app included
Defrost Function	Automatic & manual

🏊 Pool Sizing Guide

This heat pump suits:

• 40m³ pools (8,800 gal) – Excellent performance
• 50m³ pools (11,000 gal) – Optimal sizing
• 60m³ pools (13,200 gal) – Good performance
• 75m³ pools (16,500 gal) – Adequate for maintenance heating

Typical heating times (assuming 10°C temperature rise):

• 50m³ pool: 24-30 hours initial heat-up in Smart mode
• Daily maintenance: 2-4 hours to compensate overnight heat loss
• Turbo mode: 20% faster heating when needed

🛡️ Industry-Leading Warranty

7-Year Heat Exchanger 🔧
Premium titanium heat exchanger protected for 7 full years.

7-Year Compressor 🔧
Heart of the system covered for 7 years.

2-Year Parts & Labor 🔧
Complete coverage including parts and labor (12-month parts only thereafter).

📱 WiFi Smart Control Features

Complete Remote Management:

• Set and adjust target temperature from anywhere
• Switch between Turbo/Smart/Silence modes
• Monitor current water temperature in real-time
• View heating capacity percentage
• Schedule timer operations
• Track energy performance
• Share control with family members
• Supports both °C and °F display

Compatible with iOS and Android devices.

🔧 Installation Requirements

Electrical:

• 230V single-phase supply required
• 22.5A breaker recommended
• Professional hardwired installation mandatory
• 3×4mm² power cable for runs ≤10m
• RCD protection (30mA leakage current)

Plumbing:

• 48.3mm (1.9″) water connections
• Water pump required (max lift ≥10m)
• Recommended flow rate: 6.5-8.5m³/h
• Hard pipe connections essential
• Keep pipe run ≤10m from pool

Positioning:

• Solid concrete base or anti-rust brackets
• Minimum clearances: 300-460mm sides, 350-600mm front
• Well-ventilated outdoor location
• Avoid recirculation of exhaust air
• Drainage point for condensation water

📋 What’s Included

✅ AXR21 Heat Pump Unit
✅ WiFi Control Module (pre-installed)
✅ Condensation Drainage Tube
✅ Installation Manual & User Guide
✅ Mounting Hardware
✅ iOS/Android App Access

Not included: Water pump, plumbing fittings, electrical cables, breaker (supplied by installer).

🌟 Key Advantages Over Standard Heat Pumps

Full Inverter Technology 🎯
Variable speed compressor adjusts from 20-120% capacity for maximum efficiency and precise temperature control.

Triple Mode Flexibility 🔄
Unique three-mode system competitors don’t offer. Switch from silent overnight operation to rapid Turbo boost instantly.

Extreme Cold Performance ❄️
Functions reliably down to -15°C when most heat pumps struggle below 0°C.

Auto Defrost Intelligence 🧊
Automatic defrost cycle plus manual override ensures consistent performance in cold conditions.

Titanium Heat Exchanger 💎
Superior corrosion resistance vs copper—essential for chemically treated pool water longevity.

Power-Off Memory 🧠
Automatically resumes previous settings after power interruption.

📖 Technical Documentation & Resources

📄 Download Performance Curves & COP Data
Detailed heating capacity curves at different ambient temperatures and compressor speeds.

📘 Download Complete Installation & User Manual
27-page comprehensive guide covering installation, operation, maintenance, troubleshooting, and WiFi setup.

❄️ Winter Protection & Maintenance

Anti-Freeze Protection:

• Automatic anti-freeze function activates below 2°C
• Visual reminder when protection mode active
• Must drain completely if not running in freezing conditions

Winterizing Procedure:

1. Power off and isolate electrical supply
2. Unscrew inlet union to drain all water
3. Ensure complete drainage to prevent freeze damage
4. Store covered or leave in place if drained

Annual Maintenance:

• Clean evaporator fins with household detergent or water
• Inspect electrical connections and bolts
• Check for refrigerant leaks (professional service)
• Verify water flow rates

🚨 Safety & Protection Features

✅ High/Low pressure protection
✅ Water flow monitoring
✅ Anti-freeze protection
✅ Overheat protection
✅ Phase protection (prevents damage)
✅ Compressor delay start (3 minutes)
✅ Multiple temperature sensors
✅ Automatic error diagnostics
✅ Screen lock prevents accidental changes

💡 Real-World Performance Examples

Spring Pool Opening (15°C ambient):
Heating 50m³ pool from 12°C to 28°C requires approximately 28-32 hours continuous operation in Smart mode. Daily cost: £3-5 depending on electricity rates.

Summer Maintenance (25°C ambient):
Maintaining 28°C pool temperature requires 2-4 hours daily operation. COP reaches peak efficiency (7-8). Daily cost: £1-2.

Autumn Extension (10°C ambient):
Heat pump remains effective but requires longer run times. Turbo mode helps combat heat loss. Daily cost: £4-7.

📞 Professional Installation Required

⚠️ This heat pump MUST be installed by qualified heating engineers. DIY installation voids warranty and creates safety risks.

Installation includes:

• Electrical hardwiring and RCD protection
• Plumbing integration with filtration system
• Secure mounting and positioning
• Water flow testing and commissioning
• WiFi setup and user training

Special order terms apply—review T&Cs before purchase.

🎁 Why Buy From Parts4Tubs?

✅ Authorized Aqua Inverter dealer
✅ Technical support and guidance
✅ Genuine manufacturer warranty
✅ Fast dispatch on special orders
✅ Expert installation advice

🔍 Frequently Asked Questions

Q: What pool size is this suitable for?
A: Designed for pools 40-75m³ (8,800-16,500 gallons). Optimal performance with 50-60m³ pools.

Q: How much does it cost to run?
A: Approximately £1-7 daily depending on season, pool size, and electricity rates. COP up to 15.0 means extremely efficient operation.

Q: Can I install this myself?
A: No. Professional installation by qualified technicians is mandatory for safety and warranty validity.

Q: Does it work in winter?
A: Yes, operates effectively down to -15°C ambient temperature with automatic defrost function.

Q: How loud is it?
A: Very quiet—just 22.9dB at 10m distance in Smart mode. Silence mode operates even quieter.

Q: What warranty is included?
A: 7 years on heat exchanger and compressor, 2 years parts and labor.

Q: Can I control it remotely?
A: Yes, full WiFi control via iOS/Android app from anywhere with internet connection.

Q: What maintenance is required?
A: Annual cleaning of fins, checking connections, and professional refrigerant inspection recommended.

🛒 Ready to Extend Your Swimming Season?

Order your Aqua Inverter Turbo-Pro Silence AXR21 today and enjoy:

🌊 Months of additional swimming time
💰 Up to 80% lower heating costs
🤫 Whisper-quiet operation
📱 Complete smartphone control
🛡️ Industry-leading 7-year warranty