🏆 Pentair Sta-Rite HD 1.5 HP Single Phase Pool Pump

Enhanced Italian Engineering with 26 m³/hr Flow – The Perfect Balance of Power and Efficiency for Larger Pools 🌟

📋 Product Overview

The Pentair Sta-Rite HD 1.5 HP steps up from the 1.0 HP model to deliver substantially increased circulation for larger residential pools and light commercial installations. With 26 m³/hr flow rate at 8m head from an efficient 1.1 kW motor, this pump handles pools up to 150m³ with ease whilst maintaining the exceptional build quality that defines the Sta-Rite HD range.

Manufactured 100% at Pentair’s state-of-the-art facility in Pisa, Italy, every component reflects European engineering excellence. The induction asynchronous motor features a bi-material shaft with AISI 304 stainless steel drive-end, paired with premium SKF sealed bearings—the same bearing brand trusted in automotive and aerospace applications for smooth, quiet, long-lasting operation.

The innovative XL pre-filter basket holds significantly more debris than standard designs, extending maintenance intervals and ensuring consistent flow even when leaves and debris are heavy. The ¼ turn opening lid and stainless steel locking clamp make routine basket cleaning quick and tool-free.

With PPO resin sleeved impeller construction rated for saltwater pools up to 0.40% salinity, thermal overload protection, IP-X5 weather resistance, and Pentair’s comprehensive 3-year warranty, the Sta-Rite HD 1.5 HP delivers professional-grade performance for demanding pool owners who expect more from their equipment.

⭐ Key Features

✅ Powerful 1.5 HP Motor – 1.1 kW output delivers 26 m³/hr flow at 8m head, providing 24% more circulation than the 1.0 HP model

✅ 100% Italian Manufacturing – Built at Pentair’s Pisa facility with European quality standards and precision engineering

✅ XL Pre-Filter Basket – Extra-large capacity extends cleaning intervals and handles heavy debris loads without flow restriction

✅ Premium SKF Sealed Bearings – Automotive-grade bearings deliver exceptional longevity, reliability, and whisper-quiet operation

✅ Bi-Material Stainless Steel Shaft – AISI 304 stainless steel drive-end ensures corrosion resistance and precise impeller alignment

✅ PPO Resin Sleeved Impeller – Advanced polymer construction withstands harsh pool chemicals and saltwater environments

✅ Saltwater Compatible – Certified for use with salt chlorination systems up to 0.40% salinity

✅ Quick Self-Priming – Rapid, safe startup minimises waiting time and protects against dry running damage

✅ ¼ Turn Opening Lid – Tool-free access for fast, convenient basket cleaning and maintenance

✅ Stainless Steel Locking Clamp – Secure, corrosion-resistant closure ensures reliable sealing

✅ 63mm Threaded Connections – Generous 2″ inlet/outlet with unions included for easy installation

✅ IP-X5 Weather Protection – Splash-resistant motor housing suitable for outdoor plant rooms

✅ Thermal Overload Protection – Integrated motor safeguard prevents damage from overheating

✅ 3-Year Warranty – Comprehensive manufacturer coverage including bearings (90-day mechanical seal)

🔧 Technical Specifications

Specification	Value
Model	Sta-Rite HD (5P6RF-1)
Part Number	P-STRHD-151
Motor Power	1.5 HP / 1.1 kW
Phase	Single Phase (Mono)
Voltage	220–240V
Frequency	50Hz
Flow Rate @ 8m Head	26 m³/hr
Recommended Pool Size	70–120 m³ (up to 150 m³ with extended runtime)
Inlet/Outlet	63mm threaded
Union Diameter	63mm ID
Unions Included	Yes
Total Length	645mm
Weight	19 kg
IP Rating	IP-X5
Salt Resistance	Up to 0.40%
Shaft Material	Bi-material with AISI 304 SS drive-end
Bearings	SKF sealed
Impeller Material	PPO Resin (sleeved)
Motor Protection	Thermal overload
Warranty (Pump)	3 Years (including bearings)
Warranty (Mechanical Seal)	90 Days
Country of Origin	Italy 🇮🇹

💰 Usage Costs & Running Expenses

The Sta-Rite HD 1.5 HP delivers excellent flow rates from a well-optimised 1.1 kW motor. Here’s a transparent breakdown of real-world operating costs.

📊 Annual Running Cost Calculation

Base Parameters:

• Power consumption: 1.1 kW
• Current UK electricity rate: £0.2635 per kWh (Ofgem Price Cap, Q4 2025)

🏊 Scenario 1: Seasonal Residential Pool (May–September)

Standard usage for larger UK outdoor pools during swimming season.

Calculation:

• Daily runtime: 8 hours
• Swimming season: 150 days (May–September)
• Annual operating hours: 8 × 150 = 1,200 hours
• Energy consumption: 1.1 kW × 1,200 hours = 1,320 kWh
• ✅ Annual running cost: 1,320 × £0.2635 = £347.82

💵 Monthly cost during season: approximately £70

♨️ Scenario 2: Year-Round Heated/Indoor Pool

For larger pools operating throughout the year with consistent filtration demands.

Calculation:

• Daily runtime: 10 hours
• Operating days: 365 days
• Annual operating hours: 10 × 365 = 3,650 hours
• Energy consumption: 1.1 kW × 3,650 hours = 4,015 kWh
• ✅ Annual running cost: 4,015 × £0.2635 = £1,057.95

💷 Monthly cost: approximately £88

🏢 Scenario 3: Holiday Let / High-Usage Property

Extended filtration for rental properties, holiday lets, or heavily-used pools.

Calculation:

• Daily runtime: 12 hours
• Operating days: 200 days
• Annual operating hours: 12 × 200 = 2,400 hours
• Energy consumption: 1.1 kW × 2,400 hours = 2,640 kWh
• ✅ Annual running cost: 2,640 × £0.2635 = £695.64

💰 Monthly cost during season: approximately £116

⚡ Efficiency Comparison: Sta-Rite HD 1.5 HP vs Alternatives

Pump Option	Power	Flow @ 8m	Annual Hours	Annual Cost	Flow/kW Ratio
✅ Sta-Rite HD 1.5 HP	1.1 kW	26 m³/hr	1,200	£347.82	23.6 m³/kW
❌ Budget 1.5 HP pump	1.30 kW	23 m³/hr	1,200	£410.94	17.7 m³/kW
❌ Old inefficient 1.5 HP	1.50 kW	22 m³/hr	1,200	£474.30	14.7 m³/kW
❌ Oversized 2.0 HP	1.50 kW	28 m³/hr	1,200	£474.30	18.7 m³/kW

💸 Annual savings vs budget alternatives: £63–£126

The Sta-Rite HD 1.5 HP achieves 23.6 m³/hr per kilowatt—33% more efficient than typical budget pumps

📈 Sta-Rite HD 1.0 HP vs 1.5 HP: Choosing the Right Model

Factor	Sta-Rite HD 1.0 HP	Sta-Rite HD 1.5 HP	Difference
Power	0.75 kW	1.1 kW	+47%
Flow @ 8m	21 m³/hr	26 m³/hr	+24%
Annual Cost (1,200 hrs)	£237.15	£347.82	+£110.67
Price	£629.00	£669.00	+£40.00
Best For	70–100 m³ pools	90–150 m³ pools	—

Choose the 1.5 HP when:

• Your pool exceeds 100,000 litres (100 m³)
• You have extended pipework runs creating friction losses
• Water features share the circulation system
• Faster turnover times are required for heated pools
• You prefer shorter daily runtime with higher flow

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📊 Complete Sta-Rite HD Range Comparison

Model	Power	Flow @ 8m	Phase	Annual Cost*	Best Pool Size
Sta-Rite HD 0.75 HP	0.55 kW	16 m³/hr	Single	£173.91	50–80 m³
Sta-Rite HD 1.0 HP	0.75 kW	21 m³/hr	Single	£237.15	70–120 m³
Sta-Rite HD 1.5 HP	1.1 kW	26 m³/hr	Single	£347.82	90–150 m³
Sta-Rite HD 2.0 HP	1.5 kW	29 m³/hr	Single	£474.30	100–180 m³
Sta-Rite HD 3.0 HP	2.2 kW	33 m³/hr	Single	£695.64	120–200 m³

*Based on 1,200 hours seasonal operation at £0.2635/kWh

🎯 Real World Applications

🏊‍♂️ Large Residential Pools (90,000–150,000 Litres)

The Sta-Rite HD 1.5 HP is ideally sized for substantial private pools where the 1.0 HP model would require extended runtime. With 26 m³/hr flow, a 100,000-litre pool achieves complete turnover in under 4 hours, maintaining excellent water quality with comfortable daily filtration schedules.

🌊 Saltwater Pool Installations

Certified for salt chlorination systems up to 0.40% salinity, the PPO resin impeller and stainless steel components resist the corrosive effects that rapidly degrade lesser pumps in saltwater environments. Many budget pumps fail within 2–3 years in salt pools—the Sta-Rite HD is built to last.

🏠 Holiday Lets & Rental Properties

The XL pre-filter basket and tool-free ¼ turn lid make maintenance straightforward for guests or cleaning staff. The 3-year warranty provides peace of mind for rental property investments, and the robust construction handles the demands of high-usage environments.

🔄 5P6R Series Replacement & Upgrades

The Sta-Rite HD is a direct replacement for the popular 5P6R series with identical connection sizes and mounting dimensions. Pool owners upgrading from 1.0 HP to 1.5 HP gain 24% more flow with no pipework modifications required—simply swap the pump and enjoy improved circulation.

🌿 Pools with Heavy Debris Load

Gardens with mature trees, overhanging branches, or significant leaf fall benefit enormously from the XL basket capacity. Longer intervals between cleaning mean less maintenance disruption and more consistent filtration throughout autumn months.

♨️ Heated & Indoor Pools

Heated pools benefit from faster circulation to distribute warmth evenly and work efficiently with heat exchangers. The 26 m³/hr flow rate ensures consistent temperature throughout larger pool volumes, reducing heating costs and improving bather comfort.

💡 Cost Savings Examples

📍 Scenario: Upgrading from an Ageing 1.5 HP Pump

Older pumps typically consume 30–40% more electricity than modern designs due to worn impellers, degraded bearings, and outdated motor technology.

Example comparison:

• ❌ Aged pump power draw: approximately 1.50 kW
• ✅ New Sta-Rite HD 1.5 HP: 1.1 kW
• Usage: 8 hours/day × 150 days = 1,200 hours annually

Annual energy consumption:

• ❌ Old pump: 1.50 kW × 1,200 = 1,800 kWh = £474.30
• ✅ Sta-Rite HD: 1.1 kW × 1,200 = 1,320 kWh = £347.82

💰 Annual saving: £126.48

📈 5-year savings: £632.40

⏱️ Payback on efficiency gains: approximately 5.3 years

📍 Scenario: Choosing Quality Over Budget Equipment

Budget pumps sacrifice efficiency for lower purchase prices. The total cost of ownership reveals the true value.

5-year comparison (8 hours/day, 150 days/year = 1,200 hours annually):

Factor	Budget 1.5 HP	Sta-Rite HD 1.5 HP
Purchase price	£450	£669.00
Power consumption	1.30 kW	1.1 kW
Annual energy cost	£410.94	£347.82
5-year energy cost	£2,054.70	£1,739.10
Expected lifespan	3–5 years	8–12 years
Warranty	1 year	3 years
5-year total cost	£2,504.70	£2,408.10

💷 The Sta-Rite HD costs £96.60 LESS over 5 years—with potentially double the lifespan remaining

📍 Scenario: Right-Sizing from an Oversized 2.0 HP Pump

Many pools have oversized pumps creating unnecessary energy costs. Downsizing to correct capacity maintains water quality whilst cutting bills.

Example comparison:

• ❌ Oversized 2.0 HP pump: 1.50 kW
• ✅ Right-sized Sta-Rite HD 1.5 HP: 1.1 kW
• Year-round operation: 10 hours/day × 365 days = 3,650 hours

Annual energy consumption:

• ❌ 2.0 HP pump: 1.50 kW × 3,650 = 5,475 kWh = £1,442.66
• ✅ Sta-Rite HD: 1.1 kW × 3,650 = 4,015 kWh = £1,057.95

💰 Annual saving: £384.71

📈 3-year savings: £1,154.13

⏱️ Payback period: under 2 years

📍 Scenario: Stepping Up from 1.0 HP to 1.5 HP

For pools where the 1.0 HP model runs longer hours than ideal, upgrading to 1.5 HP can achieve the same daily turnover in less time.

Example: 100,000L pool requiring 2× daily turnover

Configuration	Pump	Runtime Required	Daily kWh	Annual Cost*
❌ Current	1.0 HP (21 m³/hr)	9.5 hours	7.13 kWh	£281.88
✅ Upgrade	1.5 HP (26 m³/hr)	7.7 hours	8.47 kWh	£334.87

*Based on 150-day season

The 1.5 HP runs fewer hours daily but uses slightly more energy overall. However, shorter runtime reduces mechanical wear, potentially extending pump lifespan—a worthwhile trade-off for many pool owners.

📥 Downloads & Resources

📄 Pentair Sta-Rite HD Technical Datasheet – Complete specifications, dimensional drawings, and performance curves for all Sta-Rite HD models (PDF)

🏆 Why Choose the Pentair Sta-Rite HD 1.5 HP?

✅ Enhanced Flow Performance – 26 m³/hr delivers 24% more circulation than the 1.0 HP model for larger pools and faster turnover

✅ European Manufacturing Excellence – 100% made in Pentair’s Italian facility with rigorous quality control

✅ Premium SKF Bearings – Automotive-grade sealed bearings deliver exceptional longevity and quiet operation

✅ Outstanding Efficiency – 23.6 m³/hr per kilowatt represents class-leading flow-per-watt performance

✅ XL Pre-Filter Basket – Significantly larger capacity means longer intervals between cleaning

✅ Saltwater Ready – Certified 0.40% salt resistance for trouble-free salt chlorination compatibility

✅ Tool-Free Maintenance – ¼ turn lid and stainless steel clamp make routine servicing quick and simple

✅ Comprehensive 3-Year Warranty – Including bearings—reflecting Pentair’s confidence in build quality

🛒 Why Buy From Parts4Tubs?

✅ Authorised Pentair Stockist – Genuine products with full UK manufacturer warranty coverage

✅ Expert Technical Support – Real pool equipment knowledge from people who understand the products

✅ Competitive Pricing – Trade-level prices available to all customers without account requirements

✅ Fast UK Delivery – In-stock items dispatched promptly with reliable nationwide courier service

✅ No-Hassle Returns – Simple returns process if products don’t meet your expectations

✨ Summary

The Pentair Sta-Rite HD 1.5 HP Single Phase Pump delivers the perfect balance of power and efficiency for larger residential pools and demanding installations. With 26 m³/hr flow from an optimised 1.1 kW motor, Italian manufacturing excellence, premium SKF bearings, and the practical XL pre-filter basket, this pump handles pools from 90,000 to 150,000 litres whilst keeping energy costs manageable. Saltwater compatibility, tool-free maintenance, and a comprehensive 3-year warranty make the Sta-Rite HD 1.5 HP a smart long-term investment. Annual running costs from just £348 for seasonal use represent outstanding value from a premium European manufacturer.