🌊 Poolex SilverLine Fi 70 Full Inverter Heat Pump with Wi-Fi – 6.8kW for 30-45m³ Pools

Transform your swimming experience with the most advanced, efficient, and whisper-quiet pool heating solution on the market.

The Poolex SilverLine Fi 70 represents the pinnacle of pool heating technology, combining Full Inverter efficiency with ultra-quiet operation and smart Wi-Fi control. Designed for pools between 30-45m³, this heat pump delivers exceptional performance while consuming up to 30% less electricity than traditional on/off systems. Enjoy comfortable swimming from spring through autumn—or even year-round in mild climates—while keeping your energy bills remarkably low.

⚡ Why Choose the Poolex SilverLine Fi 70?

Unmatched Energy Efficiency

With a Coefficient of Performance (COP) reaching up to 12.9 at optimal conditions, the SilverLine Fi 70 generates up to 12.9 kW of heating power for every 1 kW of electricity consumed. This translates to energy savings of up to 80% compared to conventional electric pool heaters. The Full Inverter technology continuously adjusts compressor and fan speeds to match your pool’s exact heating requirements, eliminating wasteful energy spikes.

Whisper-Quiet Operation

Forget noisy pool equipment that disrupts your backyard tranquility. The SilverLine Fi 70 operates at an incredibly quiet 19-29 dB(A) at 10 metres—comparable to rustling leaves or a quiet library. The innovative Eco Silence mode allows for peaceful poolside relaxation while maintaining your desired water temperature.

Built to Last

Premium components ensure decades of reliable service:

• 15-year warranty on the Twisted Tech© titanium heat exchanger (against chemical corrosion)
• 5-year warranty on the Toshiba double rotation compressor
• 2-year warranty on the complete heat pump system
• Corrosion-resistant titanium coil handles chlorine, salt, and all water treatment systems

Smart Wi-Fi Control

Control your pool heating from anywhere using the Smart Life app on your smartphone. Adjust temperature, switch modes, set schedules, and monitor performance—all from the palm of your hand. Compatible with Amazon Alexa and Google Home for voice control convenience.

All-Weather Performance

The SilverLine Fi 70 operates reliably in ambient temperatures from -7°C to 43°C, making it suitable for extended swimming seasons and even year-round use in temperate climates. Advanced antifreeze protection safeguards your investment during cold weather.

📋 Complete Technical Specifications

Specification	Details
Model Reference	PC-SLP 070N
Ideal Pool Volume	30 – 45 m³
Max Heating Power	6.8 kW (Full Inverter mode)
Min Heating Power	1.94 kW (Eco mode)
Power Consumption (Max)	1.05 kW
COP (Standard Conditions)	6.47 – 12.9 (Air 26°C / Water 26°C)
COP (Cold Conditions)	4.6 – 6.4 (Air 15°C / Water 26°C)
Cooling Capacity	3.24 kW
Operating Temperature Range	-7°C to +43°C
Heating Temperature Range	15°C – 40°C
Cooling Temperature Range	8°C – 28°C
Refrigerant Type	R32 (eco-friendly)
Refrigerant Mass	0.3 kg
Electrical Supply	230V / 50Hz Single Phase
Max Current Draw	7 A
Max Power Capacity	1.33 kW
Recommended Water Flow Rate	2 – 4 m³/h
Hydraulic Connections	50mm (1½”) PVC fittings
Heat Exchanger Type	Twisted Tech© Titanium Coil in PVC Tank
Compressor Brand	Toshiba Double Rotation GMCC
Compressor Type	Hermetic Rotary DC Inverter
Fan Motor	DC Inverter Fan Motor
Fan Air Direction	Horizontal Discharge
Noise Level @ 1m	37 – 50 dB(A)
Noise Level @ 10m	19 – 29 dB(A) (Eco Silence mode: ~19 dB)
Protection Rating	IPX4 (splash-proof)
Dimensions (L × W × H)	824 × 334 × 656 mm
Packaging Dimensions	886 × 404 × 778 mm
Unit Weight	35 kg
Control System	Wired LCD Backlit Remote + Wi-Fi App Control

📄 Downloads & Documentation

Access comprehensive technical information and installation guidance for your Poolex SilverLine Fi 70:

📄 Installation & User Manual (opens in new tab) Complete 39-page manual covering installation procedures, electrical connections, hydraulic setup, operation instructions, maintenance schedules, troubleshooting guides, and safety information. Essential reading for installers and owners.

📄 Technical Specification Sheet (opens in new tab) Detailed technical datasheet with performance specifications, COP ratings, dimensions, and comparison across the entire SilverLine Fi range (70/90/120/150/200 models).

🎯 Key Features & Benefits

1. Revolutionary Full Inverter Technology

Unlike traditional on/off heat pumps that cycle between full power and complete shutdown, the Full Inverter system continuously modulates compressor and fan speeds to precisely match your pool’s heating demands. This results in:

• Up to 30% reduction in energy consumption
• Faster temperature stabilization with minimal temperature fluctuations
• Extended equipment lifespan due to reduced mechanical stress
• Quieter operation with no jarring start-up cycles

2. Multi-Mode Operation for Every Situation

Choose the perfect mode for your needs:

• 🔥 Boost Mode – Maximum heating power for rapid temperature increase (ideal when opening the pool or after cold weather)
• 🌱 Eco Silence Mode – Ultra-quiet, energy-efficient operation for daily temperature maintenance
• 🤖 Auto Mode – Intelligent automatic adjustment based on ambient and water temperatures
• ❄️ Cooling Mode – Lower water temperature during hot summer days (up to 3.24 kW cooling capacity)
• 🛡️ Antifreeze Protection – Automatic activation when temperatures drop below 2°C

3. Premium Twisted Tech© Titanium Heat Exchanger

The advanced titanium coil design provides:

• Superior heat transfer efficiency for faster pool heating
• Complete resistance to chlorine, salt, bromine, and all chemical treatments
• Extended surface area through twisted coil geometry
• 15-year corrosion warranty for ultimate peace of mind

4. Toshiba Compressor – Proven Reliability

The heart of the SilverLine Fi 70 features a premium Toshiba hermetic rotary compressor with:

• DC Inverter technology for variable-speed operation
• Industry-leading reliability backed by 5-year warranty
• Whisper-quiet performance even under full load
• Wide operating envelope down to -7°C ambient temperature

5. Smart Wi-Fi Connectivity

Take control from anywhere:

• Smart Life App – iOS and Android compatible
• Real-time monitoring of water temperature and operating status
• Schedule programming – Set daily on/off times to match your filtration schedule
• Multi-device control – Manage multiple pool equipment from one app
• Voice control – Compatible with Amazon Alexa and Google Home
• Remote notifications – Receive alerts for errors or maintenance needs

6. Complete Installation Package

Everything you need is included:

• ✅ Heat pump unit with wired LCD remote control
• ✅ 10-metre remote control extension cable
• ✅ Two 50mm (1½”) PVC hydraulic connectors
• ✅ Condensation drainage hose and fittings
• ✅ Four anti-vibration rubber feet
• ✅ Isothermal winter storage cover
• ✅ Comprehensive installation and user manual
• ✅ Delivered on sturdy wooden pallet for protection

🏊 Pool Sizing & Heating Performance Guide

Suitable Pool Volumes

The SilverLine Fi 70 is optimally designed for:

• Minimum pool volume: 30 m³
• Maximum pool volume: 45 m³
• Ideal range: 35-40 m³ for best efficiency

Estimated Heat-Up Times

The table below provides estimated heating times under favorable conditions (ambient temperature 20-26°C, pool covered when not in use, moderate wind). Actual times may vary based on weather, pool insulation, and usage patterns.

Pool Volume	Temperature Rise	Estimated Time (Full Power)	Estimated Time (Eco Mode)
30 m³	5°C	24-30 hours	40-48 hours
35 m³	5°C	28-35 hours	48-56 hours
40 m³	5°C	32-40 hours	54-65 hours
45 m³	5°C	36-45 hours	60-72 hours
30 m³	10°C	48-60 hours	80-96 hours
40 m³	10°C	64-80 hours	108-130 hours

💡 Important Notes:

• Heat-up times assume the pool is covered with a solar/bubble cover when not in use (essential for heat retention)
• Ambient temperatures below 15°C will extend heating times
• Above-ground pools lose heat faster and may require 20-30% longer heating times
• Using a pool cover reduces heat loss by up to 80% and dramatically improves efficiency

Daily Temperature Maintenance

Once your pool reaches the desired temperature, the SilverLine Fi 70 typically operates 2-4 hours per day in Eco mode to maintain temperature (assuming pool is covered when not in use). This results in remarkably low running costs.

💰 Running Cost Analysis

Energy Efficiency Comparison

Based on a 40m³ pool heating from 18°C to 28°C (10°C rise):

Heating Method	Energy Required	Estimated Cost*	Annual Cost (5 months)
Poolex SilverLine Fi 70	466 kWh	£140	£350-450
Traditional Electric Heater	4,650 kWh	£1,395	£3,500-4,500
Gas Boiler	670 kWh (gas)	£235	£600-800

**Costs based on UK electricity rate of £0.30/kWh and gas at £0.35/kWh (November 2024). Actual costs vary by location and energy provider.

Return on Investment

Compared to traditional electric heating, the SilverLine Fi 70 typically pays for itself within 1-2 swimming seasons through energy savings alone.

🔧 Installation Requirements & Clearances

Positioning Guidelines

For optimal performance and longevity:

✅ DO:

• Install on a level, stable surface (concrete pad recommended)
• Ensure minimum 50cm clearance around sides and rear
• Maintain 1 metre minimum clearance in front of air discharge
• Position unit outdoors in well-ventilated area
• Use supplied anti-vibration feet to minimize noise transmission
• Install condensation drainage hose
• Protect unit with winter cover when not in use

❌ DON’T:

• Install in enclosed spaces or against walls
• Position air discharge toward neighboring properties
• Expose to direct water spray (IPX4 rated only)
• Install near heat sources or combustible materials
• Place on soft ground without proper foundation
• Block air intake or discharge areas

Electrical Requirements

• Supply: 230V / 50Hz single-phase
• Circuit breaker: 16A Type D curve (included in installation by qualified electrician)
• Cable: 3 × 2.5mm² RO2V (outdoor rated) up to 10 metres
• Protection: 30mA RCD (differential switch) upstream
• Earth connection: Mandatory
• Installation: Must be performed by qualified, certified electrician

Hydraulic Connection

• Pipe diameter: 50mm (1½”) PVC
• Flow rate required: 2-4 m³/h
• By-pass kit: Mandatory (allows isolation for maintenance)
• Filtration pump: Must operate when heat pump runs (can be servo-controlled via heat pump)
• Installation position: After filtration, before chemical dosing equipment
• Pressure loss: 1.1 mCE (meters water column equivalent)

🌡️ Seasonal Performance Expectations

Spring (15-20°C Ambient)

• Heating capacity: 4.5-5.5 kW
• COP: 5.0-6.0
• Daily temperature gain: 0.8-1.2°C (covered pool)
• Typical runtime: 6-8 hours/day

Summer (25-30°C Ambient)

• Heating capacity: 6.0-6.8 kW
• COP: 10.0-12.9
• Daily temperature gain: 1.5-2.0°C (covered pool)
• Typical runtime: 2-4 hours/day (maintenance mode)

Autumn (10-15°C Ambient)

• Heating capacity: 3.5-4.5 kW
• COP: 4.5-5.5
• Daily temperature gain: 0.5-0.8°C (covered pool)
• Typical runtime: 8-10 hours/day

Extended Season (-5 to 10°C Ambient)

• Heating capacity: 2.5-3.5 kW
• COP: 4.0-4.8
• Operation: Possible but less efficient
• Recommendation: Use thermal pool cover and windbreak

❓ Frequently Asked Questions

How much does it cost to run the SilverLine Fi 70?

Running costs depend on your pool size, desired temperature, ambient conditions, and whether you use a pool cover. For a typical 40m³ pool maintained at 28°C during a 5-month season, expect annual electricity costs of £350-450 (based on £0.30/kWh). Using a pool cover is essential—without one, costs can double or triple due to heat loss through evaporation.

How long does it take to heat my pool initially?

Initial heat-up time varies significantly based on starting temperature, ambient conditions, and pool size. For a 40m³ pool, expect approximately 3-4 days to raise the temperature from 18°C to 28°C under favorable spring conditions (20°C+ ambient, with pool cover). Once at temperature, daily maintenance requires only 2-4 hours of operation.

Can I use this heat pump with a saltwater pool?

Absolutely! The titanium heat exchanger is specifically designed to resist corrosion from saltwater systems, chlorine, bromine, and all common pool treatments. The titanium coil carries a 15-year warranty against chemical corrosion, making it ideal for saltwater installations.

How quiet is the SilverLine Fi 70 in operation?

The Full Inverter technology makes this one of the quietest pool heat pumps available. At 10 metres distance, noise levels range from 19-29 dB(A)—quieter than a whisper. In Eco Silence mode at low speed, the unit produces only ~19 dB(A) at 10m, barely audible in a quiet backyard setting. Even at full power, it remains remarkably quiet at 29 dB(A).

Do I need professional installation?

Yes, professional installation by a qualified technician is mandatory for warranty validation and safety compliance. Electrical work must be performed by a certified electrician. Hydraulic connections require experience with PVC plumbing and pool equipment. Incorrect installation can damage the unit and void the warranty.

What maintenance is required?

Maintenance is minimal:

• Monthly: Check and clean pool filter; verify water flow
• Quarterly: Inspect heat exchanger coil; clean if dusty
• Annually: Professional inspection including electrical connections, refrigerant pressure check, and system performance test
• Before winter storage: Drain water from unit, install winter cover

Can this heat pump also cool my pool?

Yes! The SilverLine Fi 70 includes cooling mode with 3.24 kW cooling capacity. This is perfect for hot summer days when water temperature exceeds comfortable levels (typically above 30°C). The cooling function can lower water temperature by several degrees, creating a more refreshing swimming experience.

What happens if the temperature drops below freezing?

The integrated antifreeze protection system automatically monitors ambient and water temperatures. When either drops below 2°C, the system activates the compressor and circulating pump to prevent freezing damage. This occurs automatically even when the unit is in standby mode (requires electrical power to be connected). For extended winter shutdown, follow the winterization procedure in the manual.

Does it work in cold weather?

The SilverLine Fi 70 operates down to -7°C ambient temperature, making it suitable for extended seasons in the UK and temperate climates. However, efficiency decreases at lower temperatures. For ambient temperatures below 10°C, expect reduced heating capacity and longer heat-up times. The unit is most efficient when ambient temperature exceeds 15°C.

What’s included in the warranty?

• 2 years: Complete heat pump system
• 5 years: Toshiba compressor
• 15 years: Titanium heat exchanger (against chemical corrosion, excluding frost damage)

Warranty requires proof of professional installation and annual maintenance records. Registration with manufacturer recommended within 30 days of purchase.

Can I control it with my smartphone?

Yes! The integrated Wi-Fi connectivity allows full control via the Smart Life app (iOS and Android). You can adjust temperature, change operating modes, set schedules, and receive notifications—all remotely. The system is also compatible with Amazon Alexa and Google Home for voice control. Note that the physical wired remote control is also included for local operation.

Will this heat my spa or hot tub?

While the SilverLine Fi 70 is designed for swimming pools, it can heat small spas or plunge pools within its capacity range (30-45m³). However, achieving typical spa temperatures (37-40°C) in cold weather is challenging with an air source heat pump. For dedicated spa heating, consider a model specifically designed for high-temperature applications.

How does Full Inverter technology differ from standard heat pumps?

Traditional on/off heat pumps operate at fixed speed—either full power or completely off. Full Inverter technology continuously adjusts compressor and fan speeds from 10-100% of capacity to precisely match heating demand. This results in 30% energy savings, much quieter operation, faster temperature stabilization, and longer equipment life by eliminating harsh on/off cycling.

🛡️ Safety & Compliance

Certifications & Standards

• ✅ CE Certified – Meets European safety and performance standards
• ✅ RoHS Compliant – Restriction of Hazardous Substances directive
• ✅ IPX4 Protection – Protected against water splashing
• ✅ TÜV Tested – Independent safety verification
• ✅ R32 Refrigerant – Low GWP (Global Warming Potential) eco-friendly gas

Safety Features

• High/Low Pressure Protection – Automatic shutdown if refrigerant pressures are abnormal
• Flow Switch Protection – Prevents operation without adequate water flow
• Antifreeze Protection – Automatic activation below 2°C
• Thermal Overload Protection – Protects compressor from overheating
• Phase Sequence Protection – Ensures correct electrical connection
• Error Display System – LCD screen shows diagnostic codes for easy troubleshooting

📦 What’s in the Box

Your complete SilverLine Fi 70 package includes:

✅ Poolex SilverLine Fi 70 heat pump unit (35 kg) ✅ Wired LCD remote control panel with backlight ✅ 10-metre remote control extension cable ✅ Two 50mm (1½”) PVC hydraulic connectors ✅ Condensation drainage kit (hose and fittings) ✅ Four anti-vibration rubber feet ✅ Isothermal winter storage cover ✅ Comprehensive installation and user manual (multi-language) ✅ Warranty registration card ✅ Delivered on protective wooden pallet

Not included (required for installation):

• By-pass kit with three valves
• PVC piping and fittings
• Electrical cable and circuit breaker
• Concrete foundation pad (recommended)
• Pool cover (highly recommended for efficiency)

🌟 Why Buy From Parts4Tubs?

When you purchase your Poolex SilverLine Fi 70 from Parts4Tubs, you receive:

✅ Genuine Poolex Product – Authorized UK distributor ✅ Full Manufacturer Warranty – 2/5/15 year comprehensive coverage ✅ Expert Technical Support – Knowledgeable staff available for guidance ✅ Secure Packaging – Delivered on protective wooden pallet ✅ Fast UK Shipping – Rapid dispatch from UK warehouse ✅ Installation Support – Guidance on finding qualified installers

🚀 Get Started Today

Transform your swimming pool into a year-round oasis of comfort with the Poolex SilverLine Fi 70. Experience the perfect combination of whisper-quiet operation, exceptional energy efficiency, and smart connectivity—all backed by industry-leading warranties.

Ready to enjoy warm, comfortable swimming while saving hundreds on energy costs?

Order your Poolex SilverLine Fi 70 today and start experiencing the difference that Full Inverter technology makes!

⚠️ Important Installation Notes:

Professional installation is required for warranty validation. Electrical work must be performed by a qualified electrician in accordance with UK wiring regulations. Hydraulic installation should be completed by an experienced pool technician. Always use a pool cover to maximize efficiency and reduce running costs. Register your product within 30 days of purchase for full warranty coverage.

🌍 Environmental Responsibility:

The SilverLine Fi 70 uses R32 refrigerant, which has a Global Warming Potential (GWP) of 675—significantly lower than older R410A refrigerant (GWP 2,088). Combined with exceptional energy efficiency, this heat pump represents an environmentally responsible choice for pool heating.