💧 Waterco HF Alphaflo 050 – 0.5HP Single Phase Pool Pump

🔋 IE3 High Efficiency Motor with Unique Motor Safeguarding Design – Engineered for Durability & Performance, 3-Year Warranty

📋 Product Overview

The Waterco HF Alphaflo 050 is a premium self-priming swimming pool pump engineered for durability and high-efficiency performance. Equipped with a newly designed impeller and diffuser that improves water flow and reduces head loss, this 0.5HP single-phase pump delivers outstanding circulation while keeping energy costs remarkably low at just 0.536 kW input power.

What truly sets the Alphaflo apart is Waterco’s unique motor safeguarding design. If the mechanical seal becomes worn, the innovative design channels any water leaks away from the motor, preventing costly damage – a protection system not found on most competitor pumps. The strong single-piece glass-filled thermoplastic pump body with integrated strainer pot and volute provides exceptional strength and corrosion resistance.

Featuring a high grade 316 stainless steel mechanical seal for protection against chlorinated water, ozone, iodine, Baquacil, bromine and salt water, the Alphaflo 050 handles virtually any pool sanitisation system. The TEFC motor with Class F insulation, IP5 rating, and 303 grade stainless steel shaft ensures long service life. With automatic thermal overload protection, 2.05-litre strainer basket, and included quick-connect barrel unions, the HF Alphaflo is built to perform season after season. Backed by Waterco’s comprehensive 3-year conditional warranty.

⭐ Key Features

✅ Unique Motor Safeguarding Design – Waterco’s exclusive design channels any water leaks from worn mechanical seals away from the motor, preventing costly motor damage and ensuring long-lasting reliability

✅ IE3 High Efficiency Motor (>80%) – Exceeds IE3 efficiency standard, significantly reducing electricity consumption and delivering genuine energy savings

✅ Newly Designed Impeller & Diffuser – Eliminates constrictions and obstacles, maximising hydraulic output while minimising turbulence for improved flow and shorter run times

✅ 316 Stainless Steel Mechanical Seal – High-grade corrosion protection suitable for chlorinated water, ozone, iodine, Baquacil, bromine and salt water systems

✅ 303 Grade Stainless Steel Motor Shaft – Premium-grade shaft material resists corrosion and ensures durability in demanding wet environments

✅ Automatic Thermal Overload Protection – Built-in safety automatically shuts down the pump in case of high amperage or overheating, preventing motor damage

✅ Silent Operation – Pump body specially designed to reduce water turbulence, plus heavy-duty pump bracket and insulation absorbs motor vibration for whisper-quiet performance

✅ Strong Single-Piece Pump Body – Glass-filled thermoplastic construction with integrated strainer pot and volute for maximum strength and durability

✅ Clear Basket Lid – Transparent lid allows easy visual inspection of the 2.05L strainer basket without disassembly

✅ Quick Connect Barrel Unions – UPVC pipe unions included for hassle-free installation on inlet and outlet

✅ Stable & Insulated Support Base – Heavy-duty base provides secure mounting while further reducing vibration and operating noise

✅ Drain Plugs – Convenient drainage for winterisation and maintenance

🔧 Technical Specifications

Specification	Detail
Model	HF Alphaflo 050
Product Code	248050EUM
Output Power (P2)	0.5 HP
Input Power	0.536 kW
Motor Input Power (Rated)	0.740 kW
Amperage	2.4 A
Motor Current (Rated)	3.4 A
Power Supply	Single Phase 220-240V
Frequency	50 Hz
Nominal Speed	2810 RPM
Maximum Flow Rate (Qmax)	15.0 m³/h
Flow Rate @ 10m Head	6 m³/h
Maximum Head (Hmax)	11.2 m
Minimum Head (Hmin)	1.8 m
Maximum Water Temperature	40°C
Protection Rating	IP5 (IPX5)
Motor Type	Asynchronous, TEFC
Motor Insulation	Class F
Efficiency Rating	> 80% (IE3 Standard)
Motor Shaft	303 Grade Stainless Steel
Mechanical Seal	316 Stainless Steel
Pump Type	Self-Priming Water Pump
Pump Body	Single-piece glass-filled thermoplastic
Strainer Basket Volume	2.05 Litres
Inlet/Outlet	50mm ports with 40/50mm unions
Safety Features	Thermal overload protection (auto shutdown)
Total Length	626 mm
Motor Frame	71 mm
Water Compatibility	Fresh water & Salt water (up to 6 g/L / 6000 ppm)
Chemical Compatibility	Chlorine, Ozone, Iodine, Baquacil, Bromine, Salt
Operating Mode	Controlled by filtration timer
Warranty (Pump)	3 Years (Conditional)
Warranty (Wet End)	3 Years
Warranty (Motor/Seal/Lid/Basket)	2 Years
Manufacturer	Waterco

💰 Usage Costs & Running Expenses

Understanding your pump’s operating costs helps with budgeting and comparing options. Here’s a detailed breakdown for the HF Alphaflo 050:

📊 Annual Running Cost Calculation

Input Power: 0.536 kW (Waterco Tech Spec)
UK electricity rate: £0.2769 per kWh (Ofgem Price Cap Q1 2026)

🏊 Scenario 1: Seasonal Pool Use (April – September)

Typical UK outdoor pool operating during warmer months.

Parameter	Value
Daily runtime	8 hours
Season length	180 days (6 months)
Annual operating hours	1,440 hours

📈 Calculation:

• Energy consumed: 0.536 kW × 1,440 hours = 771.84 kWh/year
• ✅ Annual cost: 771.84 × £0.2769 = £213.72

💷 Just over £213 per year for complete seasonal pool circulation!

🔥 Scenario 2: Year-Round Heated/Indoor Pool

Indoor or heated pools requiring continuous circulation throughout the year.

Parameter	Value
Daily runtime	10 hours
Operating days	365 days
Annual operating hours	3,650 hours

📈 Calculation:

• Energy consumed: 0.536 kW × 3,650 hours = 1,956.4 kWh/year
• ✅ Annual cost: 1,956.4 × £0.2769 = £541.73

💷 Under £545 per year for continuous year-round operation!

☀️ Scenario 3: Light Use / Small Pool

Smaller pools or reduced filtration requirements.

Parameter	Value
Daily runtime	6 hours
Season length	150 days (5 months)
Annual operating hours	900 hours

📈 Calculation:

• Energy consumed: 0.536 kW × 900 hours = 482.4 kWh/year
• ✅ Annual cost: 482.4 × £0.2769 = £133.57

💷 Under £135 per year for light seasonal use!

🔊 Sound Level Performance

The Alphaflo range is specifically engineered for quiet operation. Sound levels for the range:

Model	Typical Sound Level
0.75HP	~58-60 dBA
1HP	~58-60 dBA
1.5HP	~64-66 dBA
2HP	~68-70 dBA

Sound pressure data from Waterco Alphaflo Brochure. The 0.5HP model can be expected to operate at or below the 0.75HP levels, making it exceptionally quiet for residential installations.

⚠️ For reference: Normal conversation is approximately 60 dBA. The Alphaflo 050 operates at or below this level.

🎯 Real World Examples & Applications

🏊‍♂️ Small to Medium Domestic Pools (Up to 30m³)

The Alphaflo 050 is perfectly sized for typical UK garden pools. With 6m³/h flow rate at 10m head and maximum flow of 15m³/h, it can turn over a 24m³ pool every 4 hours – meeting the recommended 2-3 turnovers daily for crystal-clear water. The compact 626mm total length and quiet operation make it ideal for residential plant rooms.

🏠 Holiday Homes & Second Properties

For properties with intermittent use, the low running costs (under £135/year for light use) make the Alphaflo 050 economically sensible. The automatic thermal overload protection guards against damage if problems occur when you’re not present, while the unique motor safeguarding design ensures leaking seals don’t destroy the motor – crucial peace of mind for remote locations.

🌊 Salt Chlorinated & Chemical Treatment Pools

The 316 stainless steel mechanical seal provides protection against virtually every pool sanitisation method – chlorinated water, ozone, iodine, Baquacil, bromine and salt water up to 6,000 ppm. Whatever your water treatment system, the Alphaflo is built to handle it without corrosion.

🔄 Retrofit & Replacement Projects

Waterco’s Easy Retrofit design means the Alphaflo can replace many existing pump models with minimal pipework changes. The 50mm ports with included 40/50mm quick-connect barrel unions simplify connection to standard UPVC pool plumbing. Ideal for upgrading older, inefficient pumps.

🛁 Spa & Hot Tub Circulation

The compact size, quiet operation, and broad chemical compatibility make the Alphaflo 050 suitable for larger spa installations. The 40°C maximum water temperature handles typical spa operating conditions, while the 2.05L strainer basket provides excellent debris protection.

💡 Cost Savings Examples

📍 Scenario: Upgrading from an Older 0.75kW Pump

Many older installations feature oversized or inefficient pumps. Here’s what switching to the Alphaflo 050 could save:

	❌ Old 0.75kW Pump	✅ Alphaflo 050
Power consumption	0.75 kW	0.536 kW
Seasonal energy (1,440 hrs)	1,080 kWh	771.84 kWh
Annual electricity cost	£299.06	£213.72
Annual Saving	—	💰 £85.34

📈 Over 10 years: £85.34 × 10 = £853.40 in reduced electricity bills!

⏱️ Payback period: With £853 potential savings over the pump’s lifetime, significant returns on your investment!

📍 Scenario: Right-Sizing – Alphaflo 050 vs Alphaflo 100

For a 20m³ pool, the Alphaflo 050 provides ample circulation. Choosing correctly saves money:

	❌ Alphaflo 100 (Oversized)	✅ Alphaflo 050 (Right-sized)
Power consumption	1.060 kW	0.536 kW
Seasonal energy (1,440 hrs)	1,526.4 kWh	771.84 kWh
Annual cost	£422.62	£213.72
Annual Saving	—	💰 £208.90
Purchase price saving	—	💰 £70

📊 Over 5 years: (£208.90 × 5) + £70 = £1,114.50 total savings by choosing the correct pump size!

📍 Scenario: Alphaflo 050 vs Typical Competitor 0.58kW Pump

Comparing against a competitor pump with higher power consumption:

	❌ Competitor (0.58kW)	✅ Alphaflo 050 (0.536kW)
Power consumption	0.58 kW	0.536 kW
Seasonal energy (1,440 hrs)	835.2 kWh	771.84 kWh
Annual cost	£231.27	£213.72
Annual Saving	—	💰 £17.55

📊 Over 10 years: £17.55 × 10 = £175.50 saved – the IE3 efficiency advantage adds up over time!

📍 Scenario: Year-Round Indoor Pool vs 1.0kW Pump

For heated indoor pools running continuously:

	❌ 1.0kW Pump	✅ Alphaflo 050
Power consumption	1.0 kW	0.536 kW
Annual energy (3,650 hrs)	3,650 kWh	1,956.4 kWh
Annual cost	£1,010.69	£541.73
Annual Saving	—	💷 £468.96

⏱️ Payback period: Potential to recover pump cost through energy savings in approximately 18 months!

📥 Downloads & Resources

📄 Waterco Alphaflo Pool Pumps Brochure (PDF) – Complete product overview, features, flow curves, sound levels and dimensional drawings (April 2025)

📄 Waterco Alphaflo Technical Specification – Full Range (PDF) – Detailed technical specifications for all Alphaflo models including ECO-V variable speed

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🏆 Why Choose This Pump

✅ Unique Motor Safeguarding – Waterco’s exclusive design protects the motor from water damage caused by worn seals – a feature not found on most competitors

✅ IE3 Premium Efficiency (>80%) – Exceeds international efficiency standards, delivering genuine energy savings with annual costs from just £133

✅ 316 SS Mechanical Seal – Handles every sanitisation system – chlorine, ozone, iodine, Baquacil, bromine and salt water

✅ Whisper-Quiet Operation – Specially designed pump body reduces turbulence, heavy-duty bracket absorbs vibration – ideal for noise-sensitive residential gardens

✅ 303 Grade SS Motor Shaft – Premium corrosion-resistant shaft material ensures long motor life in wet environments

✅ Single-Piece Glass-Filled Body – Integrated strainer pot and volute construction provides maximum strength and durability

✅ Comprehensive 3-Year Warranty – Extended coverage with detailed component-level protection demonstrates Waterco’s quality commitment

✨ Summary

The Waterco HF Alphaflo 050 is a premium pool pump that delivers where it matters most – reliability, efficiency, and protection. Its unique motor safeguarding design sets it apart from competitors by channelling any seal leaks away from the motor, while the IE3-exceeding efficiency (>80%) keeps annual running costs from just £133 for light use. The high-grade 316 stainless steel seal handles every water treatment system from chlorine to salt, and the 303 grade SS motor shaft ensures durability in demanding environments. With its quiet operation, single-piece glass-filled body, and comprehensive 3-year warranty, the Alphaflo 050 represents outstanding value for pools up to 30m³. Engineered for durability and performance – exactly what Waterco has been delivering since 1981.