WHSR073 – Certikin Hydrostar 7.0HP (5.18kW) Commercial Pool Pump 💧

Heavy-Duty Three-Phase Performance for Elite Aquatic Facilities 🏊‍♂️

📋 Product Overview

The WHSR073 Certikin Hydrostar represents the pinnacle of commercial pool pump engineering, delivering exceptional 7.0HP (5.18kW) performance specifically designed for large-scale aquatic facilities. This heavy-duty three-phase pump combines robust construction with remarkable efficiency, making it the ideal choice for water parks, Olympic-sized pools, leisure centres, and high-end resort facilities where continuous high-volume water circulation is essential.

Manufactured by Waterco and distributed through Certikin, the Hydrostar series has been hydraulically engineered for maximum flow characteristics, delivering up to 1,100 litres per minute at optimal conditions. The composite plastic construction offers superior chemical resistance and corrosion protection whilst maintaining a surprisingly manageable weight compared to traditional cast iron alternatives. With IP55 protection rating and built-in thermal overload protection, this pump is engineered to deliver years of reliable operation in the most demanding commercial environments.

The WHSR073 excels in applications requiring sustained high-flow circulation including main pool filtration systems, commercial water features, in-floor cleaning systems, and aquaculture operations. Its three-phase motor design delivers superior efficiency compared to single-phase alternatives, typically achieving 15-20% energy savings whilst providing smoother, more reliable operation under continuous commercial loads.

⭐ Key Features

✅ Powerful 7.0HP Three-Phase Motor – Delivers 5.18kW of robust commercial-grade power with exceptional efficiency, providing sustained high-volume circulation for large aquatic facilities without motor strain or performance degradation

✅ Superior Three-Phase Efficiency – 380/415V three-phase operation achieves significantly lower running costs compared to single-phase alternatives, drawing only 8.2 amps whilst delivering maximum power output and smoother motor operation

✅ Commercial Composite Construction – Advanced glass-filled engineering plastics (GF/ABS, GF/PP) provide exceptional chemical resistance, won’t corrode in harsh chlorinated environments, and offer substantial weight savings over cast iron designs

✅ Professional-Grade Hydraulic Design – Engineered for maximum flow characteristics delivering up to 1,100 litres per minute, optimised for commercial circulation requirements with minimal head loss and exceptional efficiency across the performance curve

✅ IP55 Protection Rating – Motor protection ensures jet-proof and dust-proof operation even in exposed wet environments, providing reliable performance and extended service life in demanding pool hall conditions

✅ Massive Lockable Strainer Basket – Oversized debris collection capacity with quarter-turn lock-down assembly and clear polycarbonate lid enables easy inspection and reduces maintenance frequency in high-debris commercial environments

✅ Versatile Connection Options – Supplied complete with both 3″ (80mm) and 90mm socket unions providing flexible installation compatibility with various pipework configurations commonly found in commercial installations

✅ High Temperature Rating – 50°C maximum water temperature capacity makes this pump suitable for heated pools, spa applications, and thermal water features requiring sustained elevated temperature operation

✅ Professional European Motor – Italian-manufactured EMG motor provides superior reliability and performance consistency, featuring totally enclosed fan-cooled (TEFC) design for extended operational lifespan in commercial service

✅ Complete Drainage System – Integrated drain plug ensures thorough pump evacuation for winter shutdown, maintenance procedures, or system repairs, preventing freeze damage and facilitating complete system drainage

🔧 Technical Specifications

Specification	Details
Model Number	WHSR073
Power Output	7.0HP (5.18kW / 5,180W)
Motor Type	Three-Phase, 2860 RPM
Voltage	380/415V
Frequency	50Hz
Current Draw	8.2 Amps per phase
Motor Manufacturer	EMG (Italy)
Motor Protection	IP55 (Jet & Dust Proof)
Pump Protection Rating	IPX5
Thermal Overload	Built-in (motor protection)
Maximum Flow Rate	1,100 LPM (66 m³/hr) at 5m head
Maximum Head	23 metres
Inlet/Outlet Connections	3″ (80mm) Socket Unions (Included)
Alternative Connections	90mm Socket Unions (Included)
Pump Body Material	Composite Plastic (GF/ABS, GF/PP)
Impeller Material	Glass-Filled Noryl
Diffuser Material	Glass-Filled Noryl
Lid Material	Clear Polycarbonate
Mechanical Seal	Carbon-Graphite with Stainless Steel Spring
Maximum Water Temperature	50°C
Strainer Basket Type	Lockable, Oversized Capacity
Lid Assembly	Quarter-Turn Lock-Down
Drain Facility	Integrated Drain Plug
Chemical Compatibility	Chlorine, Bromine, Ozone, Baquacil, Iodine, Mild Salt Water
Warranty	2 Years from Installation Date
Certifications	AS3136, AS3350 (IEC 335), EN 60335-2-41 (TUV Tested)
Dimensions (L×W×H)	835mm × 295mm × 430mm
Weight	Approximately 30kg
Origin	Manufactured by Waterco

💰 Usage Costs & Running Expenses

📊 Annual Running Cost Calculation

Understanding the true operating costs of commercial pool equipment is essential for facility budgeting and equipment selection. Based on current UK commercial electricity rates and typical operating scenarios, here’s the realistic cost analysis for the WHSR073:

Base Calculation Parameters:

• Power Consumption: 5.18kW (5,180W)
• Current UK Commercial Electricity Rate: £0.26 per kWh (average Q4 2024/2025)
• Current Draw: 8.2 Amps per phase (three-phase)

🏊 Typical Operating Scenarios

Scenario 1: Municipal Pool – Seasonal Operation 📍 Usage Pattern: 10 hours daily, 6 months per year (180 days)

• Annual operating hours: 1,800 hours
• Annual energy consumption: 5.18kW × 1,800 hours = 9,324 kWh
• ✅ Annual electricity cost: £2,424
• 💷 Monthly cost (during season): £404

Scenario 2: Leisure Centre – Year-Round Operation 📍 Usage Pattern: 12 hours daily, 365 days per year

• Annual operating hours: 4,380 hours
• Annual energy consumption: 5.18kW × 4,380 hours = 22,688 kWh
• ✅ Annual electricity cost: £5,899
• 💷 Monthly cost: £492

Scenario 3: Hotel/Resort Pool – Extended Daily Use 📍 Usage Pattern: 16 hours daily, 365 days per year

• Annual operating hours: 5,840 hours
• Annual energy consumption: 5.18kW × 5,840 hours = 30,251 kWh
• ✅ Annual electricity cost: £7,865
• 💷 Monthly cost: £655

Scenario 4: Water Park – Intensive Commercial Use 📍 Usage Pattern: 14 hours daily, 7 months per year (210 days)

• Annual operating hours: 2,940 hours
• Annual energy consumption: 5.18kW × 2,940 hours = 15,229 kWh
• ✅ Annual electricity cost: £3,960
• 💷 Monthly cost (during season): £566

⚡ Energy Efficiency Advantages

The WHSR073’s three-phase motor design delivers substantial efficiency benefits compared to older single-phase alternatives:

Three-Phase Efficiency Benefits:

• Higher power factor (typically 0.85-0.90 vs 0.65-0.75 for single phase)
• Reduced current draw for equivalent power output
• Lower heat generation means less wasted energy
• Smoother operation reduces mechanical stress and wear
• Longer motor lifespan reduces replacement costs

Estimated Three-Phase Advantage: Compared to an equivalent 7HP single-phase pump (where available), three-phase operation typically saves 15-20% on energy consumption, translating to annual savings of approximately £750-£1,180 in year-round leisure centre applications.

💡 Cost Savings Examples

Upgrade Scenario 1: Replacing Older 7HP Single-Phase Technology

Many facilities still operate aging single-phase commercial pumps with significantly higher energy consumption and lower reliability.

Current Situation – Old Single-Phase 7HP Pump: ❌ Power consumption: approximately 6.1kW (due to lower efficiency) ❌ Annual cost (year-round, 12hrs/day): £6,940 ❌ Higher maintenance frequency ❌ Prone to thermal overload issues ❌ Shorter operational lifespan

After WHSR073 Upgrade: ✅ Power consumption: 5.18kW (three-phase efficiency) ✅ Annual cost (same usage): £5,899 ✅ 💰 Annual savings: £1,041 ✅ 📈 3-year savings: £3,123 ✅ ⏱ Typical payback period: 2.5-3 years

Additional Benefits Beyond Energy:

• Reduced maintenance downtime
• Lower repair frequency
• Improved reliability during peak demand
• Enhanced facility reputation for modernisation

Upgrade Scenario 2: Consolidating Multiple Smaller Pumps

Some facilities run multiple 3-4HP pumps to achieve required flow rates, which can be significantly less efficient than a single properly-sized commercial pump.

Current Situation – Two 4HP Pumps Operating in Parallel: ❌ Combined power: 2 × 3.75kW = 7.5kW ❌ Annual cost (10hrs/day, year-round): 7.5kW × 3,650hrs × £0.26 = £7,118 ❌ Double maintenance requirements ❌ Increased installation complexity ❌ Higher risk of flow imbalance

After WHSR073 Single-Pump Solution: ✅ Single pump power: 5.18kW ✅ Annual cost (same usage): £4,921 ✅ 💰 Annual savings: £2,197 ✅ 💵 3-year savings: £6,591 ✅ 📊 Reduced maintenance costs: ~50% ✅ ⏱ Payback period: 2-2.5 years

Upgrade Scenario 3: Energy Price Protection Strategy

With UK commercial electricity rates having increased 75% since 2021 (from 14.8p to 26p per kWh), energy efficiency has never been more critical for facility budgets.

10-Year Total Cost of Ownership Comparison:

Scenario A – Keeping Older Inefficient 7HP Pump: ❌ Annual energy cost (current rates): £6,940 ❌ Assuming 3% annual price increase: £79,660 total energy cost over 10 years ❌ Higher maintenance: estimated additional £5,000 over 10 years ❌ Likely replacement needed: £3,500 ❌ 10-year total: £88,160

Scenario B – Upgrading to WHSR073 Now: ✅ Initial investment: £3,200 (typical commercial price) ✅ Annual energy cost: £5,899 ✅ With 3% annual increases: £67,700 total energy cost over 10 years ✅ Lower maintenance: estimated £2,500 over 10 years ✅ Extended lifespan: minimal replacement risk ✅ 10-year total: £73,400

💷 Net 10-year saving: £14,760 📈 ROI over decade: 461% ⚡ Future-proofed against rising energy costs

🎯 Real World Applications

🏊‍♂️ Municipal Swimming Pools & Leisure Centres

The WHSR073 excels in public pool environments requiring reliable high-volume filtration for pools ranging from 500m³ to 1,200m³. Its three-phase efficiency and robust construction make it ideal for pools operating 10-14 hours daily with high bather loads. The oversized strainer basket significantly reduces maintenance intervention frequency whilst the IP55 rating ensures reliable operation in humid pool hall environments. Facilities report excellent performance in main circulation duties with reduced energy consumption compared to older single-phase alternatives.

Typical Installation Context: Main circulation pump for 25m × 6 lane pools, leisure pool filtration systems, competition pool turnover systems

Performance Expectations: Complete pool turnover every 3-4 hours, consistent flow maintenance under varying head pressure conditions, reliable operation through daily public access hours

🏢 Commercial Hotels & Resorts

Resort facilities demand pumps that deliver consistent performance with minimal noise and maintenance intervention. The WHSR073’s composite construction ensures corrosion-free operation in varied chemical environments whilst the European-manufactured motor provides the reliability expected in hospitality applications. The 50°C temperature rating accommodates heated pool and spa applications common in hotel settings. Facilities particularly value the reduced energy consumption which becomes significant with extended daily operating hours typical in resort environments.

Typical Installation Context: Hotel pool filtration (200-600m³ capacity), spa circulation systems, rooftop pool installations, multiple pool/spa complex main pump

Performance Expectations: Quiet operation suitable for guest areas, 16-hour daily operation capability, compatibility with heated water applications up to 50°C, minimal maintenance intervention

🌊 Water Parks & Aquatic Attractions

Water park environments demand the most from commercial pool equipment. The WHSR073 delivers the sustained high-flow performance required for wave pools, lazy rivers, and main attraction circulation systems. Its heavy-duty construction withstands intensive daily use whilst the massive strainer basket handles the higher debris loads typical in outdoor or high-traffic aquatic facilities. The three-phase motor’s smooth operation and thermal stability ensure reliable performance even during peak summer operating conditions with multiple consecutive operating hours.

Typical Installation Context: Wave pool circulation, lazy river drive systems, water feature pumps, main filtration for medium-sized attractions, aquatic playground circulation

Performance Expectations: Sustained flow delivery for 12-14 hours daily, high debris-load handling, ability to maintain performance in high-temperature summer conditions, compatibility with automated control systems

🛁 Health Clubs & Spa Facilities

Premium fitness and spa facilities require equipment that combines performance with refined operation. The WHSR073’s composite construction minimises operational noise whilst delivering the flow characteristics needed for sophisticated spa features. The 50°C temperature rating makes it particularly suitable for thermal spa pools and hydrotherapy installations. Health club operators appreciate the three-phase efficiency which helps control operating costs whilst the IP55 protection suits typical spa environment humidity levels.

Typical Installation Context: Spa pool circulation, hydrotherapy pool systems, experience shower features, thermal pool circulation, vitality pool filtration

Performance Expectations: Low-noise operation, compatibility with elevated water temperatures, integration with spa control systems, reliable extended-hours operation

🏠 Large Private Pools & Estates

High-end residential installations increasingly specify commercial-grade equipment for superior performance and longevity. The WHSR073 suits large private pools exceeding 150m³ where homeowners demand the reliability and efficiency of commercial equipment. Estate managers particularly value the reduced maintenance frequency and extended service life compared to residential-grade alternatives. The composite construction ensures appearance maintenance whilst the three-phase operation (where available) delivers significant energy savings on large pools with extended operating seasons.

Typical Installation Context: Estate pools exceeding 20m × 10m, swim-through pools, large naturalistic pools, private leisure complexes, indoor-outdoor circulation systems

Performance Expectations: Residential-quiet operation, consistent flow for automated cleaning systems, reduced maintenance intervention, aesthetic equipment installation

🔄 Retrofit & Upgrade Projects

Facility managers frequently specify the WHSR073 when upgrading aging pump installations to achieve better efficiency and reliability. The versatile connection options (3″ and 90mm) facilitate integration with existing pipework configurations common in retrofit scenarios. Facilities report straightforward replacement of older cast-iron pumps or consolidation of multiple smaller pumps into single efficient units. The improved efficiency typically delivers payback periods of 2-3 years through reduced energy consumption alone, before considering maintenance cost savings.

Typical Installation Context: Replacement of aging cast-iron commercial pumps, efficiency upgrades from single-phase to three-phase, consolidation of multiple pump installations, modernisation of filtration systems

Performance Expectations: Energy cost reduction of 15-25%, reduced maintenance frequency, improved system reliability, extended service intervals

📥 Downloads & Resources

Access comprehensive technical documentation for installation, operation, and maintenance of your WHSR073 Hydrostar pump:

📄 Hydrostar Technical Manual – Complete installation instructions, technical specifications, performance curves, electrical requirements, parts breakdown, and maintenance procedures (PDF, comprehensive manual)

📄 Hydrostar Product Brochure – Commercial pump range overview, key features, specification summary, dimensional drawings, and performance data (PDF, quick reference)

These manufacturer-produced documents provide essential information for facility managers, installers, and maintenance personnel. The technical manual includes detailed performance curves showing flow rates at various head pressures, complete parts identification diagrams, and comprehensive warranty terms and conditions.

🏆 Why Choose the WHSR073 Hydrostar?

✅ Proven Commercial Heritage – Manufactured by Waterco, a globally respected commercial pool equipment manufacturer with decades of experience in demanding aquatic applications, the Hydrostar series represents proven technology trusted by facility managers worldwide

✅ Superior Cost-Efficiency – Three-phase motor design delivers 15-20% energy savings compared to equivalent single-phase alternatives, with annual savings typically ranging from £750-£1,180 depending on usage patterns, providing compelling payback periods of 2-3 years on upgrade projects

✅ Genuine OEM Quality – Authentic Certikin/Waterco commercial-grade construction ensures you receive properly engineered equipment built to withstand intensive commercial use, unlike budget alternatives that compromise on motor quality, materials specification, or manufacturing standards

✅ Minimal Maintenance Requirements – Oversized strainer basket, corrosion-proof construction, and professional-grade motor design significantly reduce service intervention frequency compared to cast-iron alternatives, lowering ongoing maintenance costs and minimising facility downtime

✅ Future-Proof Investment – With UK commercial electricity rates having increased 75% since 2021 and likely to remain elevated, the WHSR073’s superior efficiency provides protection against future energy price increases whilst enhancing your facility’s environmental credentials and operating cost predictability

✅ Complete Installation Flexibility – Supplied with both 3″ (80mm) and 90mm socket unions providing compatibility with various commercial pipework configurations, facilitating straightforward installation in new builds or retrofits without requiring extensive pipework modifications

✅ Extended Temperature Capability – 50°C maximum water temperature rating accommodates heated pools, spa applications, thermal facilities, and hot water circulation systems, providing specification flexibility beyond standard commercial pumps limited to cooler water temperatures

✅ Professional-Grade Protection – IP55 motor protection and IPX5 pump rating ensure reliable operation in exposed wet environments typical of pool halls, outdoor installations, and high-humidity areas where lesser-protected pumps would suffer premature failure or safety concerns

🤝 Why Buy From Parts4tubs?

✅ Authorised Certikin Distributor – We supply genuine Waterco/Certikin commercial equipment with full manufacturer warranties and technical support, ensuring you receive authentic products built to specification rather than grey-market alternatives

✅ Commercial Pool Equipment Specialists – Our team understands commercial aquatic facility requirements and can provide expert guidance on pump selection, system design considerations, and installation best practices based on decades of combined industry experience

✅ Competitive Commercial Pricing – We offer professional pricing structures for facility managers, contractors, and commercial buyers, with volume discounts available for multi-site installations or ongoing maintenance contracts

✅ Fast Delivery Service – Stock availability and efficient logistics ensure rapid delivery when you need replacement equipment urgently, minimising facility downtime and maintaining your operational schedules

✅ Technical Support Access – Our experienced technical team provides post-purchase support for installation questions, troubleshooting assistance, and operational guidance, helping you achieve optimal performance from your equipment investment

✅ Comprehensive Product Range – Beyond pumps, we supply complete commercial pool equipment systems including filters, heating equipment, sanitisation systems, and control equipment, enabling single-source procurement for facility upgrade projects

✨ Summary

The WHSR073 Certikin Hydrostar 7.0HP commercial pump represents exceptional value for facilities requiring robust, efficient high-volume water circulation. With proven three-phase efficiency delivering annual energy savings of £750-£2,200 depending on usage patterns, composite construction ensuring decades of corrosion-free service, and professional-grade components throughout, this pump provides the performance and reliability expected in commercial aquatic applications.

Whether you’re upgrading aging equipment, building new facilities, or consolidating multiple pump installations, the WHSR073 delivers compelling financial returns through reduced energy consumption, minimised maintenance requirements, and extended operational lifespan. With UK commercial electricity rates remaining elevated at 75% above pre-2021 levels, investing in efficient equipment has never been more critical for controlling facility operating costs whilst maintaining the performance standards your users demand.

Backed by Waterco’s commercial heritage and Parts4tubs’ expertise in aquatic facility equipment, the WHSR073 Hydrostar provides the confidence that comes from proven technology, genuine OEM quality, and professional technical support for your mission-critical circulation systems.