🏊 Certikin Swimflo Plus HGS303SM | 3hp (2.2kW) Swimming Pool Pump – 3 Phase, 380V, 2″ Suction & Delivery

⚡ Industrial-Strength 3-Phase Power Meets Compact Efficiency – The Ultimate Choice for Large Pools & Commercial Installations

📋 Product Overview

The Certikin Swimflo Plus HGS303SM is a commercial-grade 3hp (2.2kW) self-priming centrifugal pump engineered for high-demand swimming pool applications where maximum performance and reliability are non-negotiable. This three-phase, 380-volt powerhouse delivers exceptional flow rates up to 39 m³/h with a maximum head of 20 metres, making it the top choice for large residential pools, commercial facilities, and professional installations.

The three-phase motor design provides significant advantages over single-phase alternatives: smoother power delivery, improved energy efficiency (typically 10-15% better), reduced vibration, and superior longevity under continuous operation. Built with Certikin’s proven one-piece composite thermoplastic body and premium Noryl impeller, the HGS303SM combines raw power with outstanding durability for years of trouble-free service.

Whether you’re managing a busy leisure centre, operating a holiday park pool, or maintaining a large private estate pool, the HGS303SM delivers the consistent, powerful circulation needed to keep water crystal clear. Fully compatible with salt chlorination systems and backed by a comprehensive 2-year warranty, this pump represents the pinnacle of the Swimflo Plus range.

⭐ Key Features

✅ Powerful 3hp (2.2kW) Three-Phase Motor – Delivers exceptional flow rates up to 39 m³/h for rapid water turnover in pools up to 150m³ or more

✅ Three-Phase 380V Operation – Provides 10-15% improved energy efficiency over single-phase equivalents, with smoother operation and reduced vibration

✅ 20 Metre Maximum Head Pressure – Handles challenging installations with long pipe runs, elevated returns, or multiple water features without performance loss

✅ High Hydraulic Efficiency Design – Optimised volute and impeller geometry maximises flow while minimising energy consumption for lower operating costs

✅ Premium Noryl Impeller – Glass-reinforced thermoplastic construction delivers exceptional corrosion resistance and extended service life in demanding environments

✅ IP55 Class F Motor Protection – Industrial-grade sealing against dust and water ingress, with continuous duty rating for all-day commercial operation

✅ Compact Three-Phase Design – At just 580mm overall length, the HGS303SM is significantly more compact than the single-phase 3hp alternative (662mm), saving valuable plant room space

✅ Salt Chlorination Compatible – Engineered for use with salt chlorinators up to 0.5% concentration, future-proofing your investment

✅ Patented Strainer Basket – Fast-opening translucent lid allows quick visual inspection and easy debris removal without tools

✅ Stainless Steel Shaft – Corrosion-resistant construction ensures reliable operation in challenging chemical environments

✅ 2-Year Manufacturer Warranty – Comprehensive Certikin backing provides confidence and protection for your investment

🔧 Technical Specifications

Specification	Details
Model Number	HGS303SM
Motor Power	3hp (2.2kW)
Electrical Supply	Three Phase, 380-400V
Frequency	50Hz
Maximum Head (Hmax)	20 metres
Maximum Flow Rate	39 m³/h
Suction Port Size	2″ (63mm metric)
Delivery Port Size	2″ (63mm metric)
Motor Protection Rating	IP55, Class F
Impeller Material	Noryl (Glass-Reinforced Thermoplastic)
Shaft Material	Stainless Steel
Body Material	Durable Composite Thermoplastic
Salt Compatibility	Yes (up to 0.5% concentration)
Self-Priming	Yes
Weight	19 kg
Warranty	2 Years

📐 Dimensions (mm)

Dimension	Measurement
Overall Length (A)	580mm
Motor Length (B)	310mm
Height (C)	280mm
Width (E)	280mm
Base to Centre Height (F)	175mm
Total Height (G)	290mm
Strainer Height (H)	248mm
Strainer Depth (I)	150mm

📈 Flow Rate Performance Chart

Head Pressure	Flow Rate
6 metres	39 m³/h
8 metres	36.5 m³/h
10 metres	33 m³/h
11 metres	31 m³/h
12 metres	30 m³/h
14 metres	25 m³/h
15 metres	22 m³/h
16 metres	19 m³/h
18 metres	8.7 m³/h

💰 Usage Costs & Running Expenses

Understanding your pump’s operational costs is essential for budgeting and appreciating the long-term value of three-phase efficiency. The HGS303SM’s improved motor efficiency helps offset its higher power rating compared to smaller pumps.

📊 Annual Running Cost Calculation

Key Assumptions:

• Power consumption: 2.2 kW
• UK electricity rate: £0.27 per kWh (Ofgem Price Cap, Q1 2026)
• All costs include VAT

🏊 Scenario 1: Large Residential Pool – Seasonal Use (6 Months)

Substantial private pool (80-120m³) operating during swimming season

Parameter	Value
Daily operation	8 hours
Season length	180 days
Annual running hours	1,440 hours
Power consumption	2.2 kW × 1,440 hours = 3,168 kWh
✅ Annual Running Cost	3,168 kWh × £0.27 = £855.36
Monthly Cost (in season)	£142.56

🏢 Scenario 2: Commercial Pool – Year-Round Operation

Hotel, leisure centre, or holiday park pool with continuous filtration

Parameter	Value
Daily operation	12 hours
Operating days	365 days
Annual running hours	4,380 hours
Power consumption	2.2 kW × 4,380 hours = 9,636 kWh
✅ Annual Running Cost	9,636 kWh × £0.27 = £2,601.72
Monthly Cost	£216.81

🏨 Scenario 3: High-Demand Commercial – Extended Hours

Busy public facility, swim school, or 24-hour leisure complex

Parameter	Value
Daily operation	16 hours
Operating days	365 days
Annual running hours	5,840 hours
Power consumption	2.2 kW × 5,840 hours = 12,848 kWh
✅ Annual Running Cost	12,848 kWh × £0.27 = £3,468.96
Monthly Cost	£289.08

⚡ Three-Phase Efficiency Advantage

The HGS303SM’s three-phase motor provides significant efficiency benefits over single-phase alternatives. Here’s how the numbers compare:

Pump Configuration	Rated Power	Actual Draw*	Annual Cost (4,380 hrs)	Efficiency
❌ Single-Phase 3hp (HGS301SM)	2.2 kW	~2.5 kW	£2,956.50	Baseline
✅ Three-Phase 3hp (HGS303SM)	2.2 kW	~2.2 kW	£2,601.72	+12%

*Three-phase motors typically achieve their rated efficiency, while single-phase motors often draw 10-15% more due to starting capacitor losses and less balanced operation.

💷 Annual Saving with Three-Phase: Approximately £355 per year in a commercial setting!

🎯 Real World Examples & Applications

🏊‍♂️ Large Private & Estate Pools (100-150m³)

The HGS303SM excels in substantial residential pools where rapid water turnover is essential. With flow rates up to 39 m³/h, a 120m³ pool achieves complete turnover in just over 3 hours – well within industry recommendations. The three-phase motor’s smooth operation means quieter performance, appreciated in residential settings where plant rooms are near living areas.

Typical installation: In-ground concrete pool 12×6m, separate pool house with three-phase supply, multiple return jets and deck-level overflow system

🏢 Hotel & Boutique Leisure Facilities

Small to medium hotels, spa resorts, and wellness centres benefit from the HGS303SM’s commercial-grade reliability combined with its compact footprint. The 20m maximum head easily handles split-level installations or rooftop pools where significant lift is required.

Typical installation: Hotel leisure pool 80-120m³, plant room in basement, long vertical pipe runs, integration with heat pump and UV treatment systems

🌊 Holiday Parks & Caravan Sites

Seasonal tourism facilities with outdoor pools require pumps that deliver consistent performance during intensive summer use, then remain reliable after winter dormancy. The HGS303SM’s robust construction and quality seals ensure dependable spring startup year after year.

Typical installation: Outdoor heated pool serving 50+ pitches, 6-month intensive operation, integrated with solar heating and automatic dosing systems

🔄 Commercial Upgrade & Replacement

When aging commercial pumps fail or efficiency drops, the HGS303SM provides a modern, efficient replacement. Its compact 580mm length often fits existing plant room layouts, while the improved hydraulic efficiency delivers better flow with lower energy consumption than pumps from 10-15 years ago.

Typical installation: Replacing worn-out commercial pump in existing plant room, upgrading from inefficient older model, consolidating multiple circulation duties

🏋️ Swim Spas & Endless Pools

High-performance swim spas and counter-current installations demand sustained high-volume flow. The HGS303SM delivers the continuous duty performance these demanding applications require, with the 3hp motor providing ample reserve for powerful swim current jets.

Typical installation: Commercial swim spa installation, endless pool with adjustable current, rehabilitation hydrotherapy facility

💧 Water Features & Fountain Systems

Large ornamental features, commercial water displays, and architectural fountains benefit from the HGS303SM’s high flow rate and substantial head pressure. The self-priming capability simplifies installation where pumps must be positioned above water level.

Typical installation: Hotel entrance water feature, large garden fountain with multiple jets, commercial water curtain or sheet waterfall

💡 Cost Savings Examples

📍 Scenario: Upgrading from Aging Commercial Pump

Situation: Replacing a 15-year-old 3hp pump with worn bearings, degraded seals, and reduced efficiency

Factor	Old Pump	HGS303SM	Saving
Estimated power draw	~2.8 kW	2.2 kW	0.6 kW
Annual hours (commercial)	4,380	4,380	–
Annual kWh	12,264 kWh	9,636 kWh	2,628 kWh
❌ Annual cost (old)	£3,311.28	–	–
✅ Annual cost (new)	–	£2,601.72	–
💰 Annual Saving	–	–	£709.56

⏱️ Payback Period: At £879.84 purchase price, energy savings alone deliver ROI in approximately 15 months – outstanding for commercial equipment!

📍 Scenario: Choosing Three-Phase Over Single-Phase

Situation: New installation with three-phase power available; comparing HGS303SM vs HGS301SM

Factor	Single-Phase (HGS301SM)	Three-Phase (HGS303SM)	Difference
Purchase price	Similar	£879.84	–
Actual power draw	~2.5 kW	~2.2 kW	-0.3 kW
Annual hours	4,380	4,380	–
Annual kWh	10,950 kWh	9,636 kWh	-1,314 kWh
❌ Annual cost (1-phase)	£2,956.50	–	–
✅ Annual cost (3-phase)	–	£2,601.72	–
💷 Annual Saving	–	–	£354.78
Pump length	662mm	580mm	-82mm

📈 5-Year Total Saving: £354.78 × 5 = £1,773.90 – plus the benefit of a more compact pump that’s easier to install and service!

📍 Scenario: Comparing Operating Costs Across Pool Sizes

Situation: Evaluating whether the HGS303SM is right for your pool volume

Pool Size	Turnover Time	Daily Runtime Needed	Annual Cost (180 days)	Verdict
60m³	1.5 hours	4-6 hours	£427-£641	⚠️ May be oversized
90m³	2.3 hours	6-8 hours	£641-£855	✅ Good match
120m³	3.1 hours	8-10 hours	£855-£1,069	✅ Ideal
150m³	3.8 hours	10-12 hours	£1,069-£1,283	✅ Perfect fit

💡 Rule of Thumb: The HGS303SM is ideally suited for pools 80-150m³. For smaller pools, consider the HGS201SM (2hp) or HGS251SM (2.5hp) for optimum efficiency.

📥 Downloads & Resources

Access comprehensive technical documentation to support your installation and ongoing maintenance:

📄 Swimflo Plus Operating Manual – Complete installation instructions, safety guidelines, maintenance procedures and troubleshooting guide (Multi-language: EN/FR/ES/DE/IT/PT)

📄 Technical Specification Sheet & Dimensions – Detailed dimensional drawings, performance curves and flow rate data for all Swimflo Plus models

🏆 Why Choose the Certikin Swimflo Plus HGS303SM?

✅ Three-Phase Efficiency – 10-15% lower running costs compared to single-phase alternatives, delivering significant savings over the pump’s lifetime

✅ Commercial-Grade Reliability – Designed for continuous duty operation in demanding professional environments where downtime is not an option

✅ Compact Powerhouse – At 580mm, the three-phase model is 82mm shorter than the single-phase 3hp variant, valuable in tight plant rooms

✅ Smoother, Quieter Operation – Balanced three-phase power delivery means reduced vibration and lower noise levels compared to single-phase motors

✅ Maximum Versatility – 20m head and 39 m³/h flow handles everything from straightforward filtration to complex multi-feature installations

✅ Future-Proof Investment – Salt chlorinator compatibility and robust construction ensure your pump remains relevant as pool technology evolves

🛒 Why Buy From Parts4Tubs?

🤝 Personal Service, Real Expertise – Parts4Tubs is owned and operated by Andi, a genuine pool and hot tub specialist who provides the knowledgeable support you won’t find at anonymous online warehouses

🚛 Reliable UK Delivery – Stock items dispatched promptly from our Northamptonshire base, with tracking provided so you know exactly when your equipment will arrive

📱 Genuine Technical Support – Questions about installation, compatibility, or specifications? Get real answers from someone who understands pool equipment, not scripted call centre responses

💳 Secure, Flexible Payment – Pay with confidence via PayPal, Stripe, all major credit/debit cards, Apple Pay and Google Pay

✔️ Clear Returns Policy – Straightforward refund and returns process if something isn’t quite right

🏗️ Built on Trust – Growing from the success of buildahottub.com, Parts4Tubs has been serving the UK pool and spa community with quality parts and honest advice since 2015

✨ Summary

The Certikin Swimflo Plus HGS303SM stands as the flagship of the Swimflo Plus range, delivering commercial-grade 3hp performance in a remarkably compact package. The three-phase motor provides superior efficiency, smoother operation, and longer service life compared to single-phase alternatives – translating to meaningful energy savings and reduced maintenance over the pump’s lifetime.

With flow rates up to 39 m³/h and 20 metres of head pressure, the HGS303SM handles demanding installations from large private pools to busy commercial facilities with ease. The proven combination of Certikin quality, robust composite construction, and IP55-rated continuous duty motor makes this pump the professional’s choice for applications where reliability is paramount.

When three-phase power is available and performance matters, the HGS303SM is the clear choice. Invest in commercial-grade quality – choose the Swimflo Plus HGS303SM.