💧 AQM051 0.5HP (0.83kW) Single Phase Pool Pump | 1.5″/50mm Suction & Delivery

Efficient, Reliable Water Circulation for Domestic Pools, Spas, Ponds & Water Features

📋 Product Overview

The AQM051 is a professionally engineered 0.5HP single-phase pump designed for domestic swimming pools, spas, ponds, and small recirculation systems. Manufactured to commercial-grade standards with advanced hydraulic design, this pump delivers exceptional performance while maintaining energy efficiency and quiet operation.

With its compact footprint, quick-connect unions, and robust construction featuring a high-grade 316 stainless steel mechanical seal, the AQM051 represents outstanding value for residential and light commercial water circulation applications. The pump’s efficient impeller and diffuser design maximizes hydraulic output while minimizing turbulence, resulting in lower energy consumption and reduced operating costs.

Engineered for durability with state-of-the-art glass-filled thermoplastic construction and protected by a patented secondary seal system, the AQM051 ensures years of reliable service with minimal maintenance requirements.

⭐ Key Features

✅ Efficient 0.5HP Motor Performance – 0.83kW single-phase motor delivers up to 14.4m³/hr flow rate with excellent energy efficiency, providing ample circulation power for most residential applications while keeping electricity costs manageable

✅ Hydraulically Optimized Impeller Design – Advanced impeller and diffuser engineering maximizes hydraulic output while minimizing turbulence, shortening run times and significantly reducing energy consumption compared to older pump designs

✅ Quick-Connect 50mm Barrel Unions – Industry-standard 1.5″ (50mm) quick-connect unions on both suction and delivery ensure hassle-free installation and maintenance, significantly reducing setup time and allowing easy winterization

✅ Large 0.9L Strainer Basket – Generously sized debris basket efficiently captures leaves, dirt, and other contaminants, reducing maintenance frequency and protecting the impeller from damage while ensuring consistent flow performance

✅ Commercial-Grade 316 Stainless Steel Seal – High-grade carbon/graphite mechanical seal with 316 stainless steel spring assembly provides exceptional protection against corrosion from chlorinated water, ozone, bromine, and salt water chlorination systems

✅ Patented Secondary Seal Protection – Unique secondary seal technology captures any leaks from a worn mechanical seal and drains them safely away, protecting the motor from water damage and significantly extending pump lifespan

✅ Single-Piece Thermoplastic Construction – Robust glass-filled thermoplastic pump body with integrated strainer pot and volute provides exceptional strength and corrosion resistance for decades of trouble-free service

✅ Thermal Overload Protection – Built-in thermal overload switch automatically protects the motor from damage due to overheating or electrical issues, preventing costly motor failures

✅ Quiet Fan-Cooled Operation – Efficient cooling fan ensures optimal motor temperature while maintaining surprisingly quiet operation, allowing placement near living areas without noise disturbance

✅ Compact Footprint Design – Total length of just 497mm with 63mm motor frame allows installation in tight spaces, perfect for both new installations and retrofits where space is at a premium

🔧 Technical Specifications

Specification	Details
Model	AQM051
Power Output	0.5HP (0.83kW)
Phase	Single Phase
Voltage	220-240V
Frequency	50Hz
Current Draw	2.50 Amps
Motor Speed	2,860 RPM
Maximum Flow Rate	14.4 m³/hr
Suction Port	1.5″ / 50mm
Delivery Port	1.5″ / 50mm
Connection Type	Quick-connect barrel unions (UPVC compatible)
Strainer Basket Capacity	0.9 litres
Mechanical Seal Type	Carbon/graphite with 316 stainless steel spring
Motor Shaft Material	303 grade stainless steel
Pump Body Material	Glass-filled thermoplastic (single-piece construction)
Total Length	497mm
Motor Frame Size	63mm
Protection Features	Thermal overload, secondary seal drain
Operating Temperature Range	0°C to 45°C
Sound Level (typical operation)	58-62 dBA
Suitable Applications	Domestic pools, spas, ponds, water features, small recirculation systems
Installation	Suitable for above-ground mounting with proper drainage

💰 Usage Costs & Running Expenses

Understanding the true operating costs of your pool pump helps you make informed decisions and budget effectively for ongoing maintenance.

📊 Annual Running Cost Calculation

Power Consumption: 0.58 kW (input power from manufacturer specifications)

UK Commercial Electricity Rate: £0.26 per kWh (2024 average for small commercial/high-usage domestic)

🏊 Standard Seasonal Pool Operation (6 months/year)

Usage Pattern: 8 hours/day × 180 days (May-October)

• Annual hours: 1,440 hours
• ✅ Annual electricity cost: 0.58 × 1,440 × £0.26 = £217

🏊‍♂️ Year-Round Pool Operation (heated pool)

Usage Pattern: 6 hours/day × 365 days

• Annual hours: 2,190 hours
• ✅ Annual electricity cost: 0.58 × 2,190 × £0.26 = £330

🌊 Light-Duty Water Feature Operation

Usage Pattern: 4 hours/day × 210 days (April-October)

• Annual hours: 840 hours
• ✅ Annual electricity cost: 0.58 × 840 × £0.26 = £127

💷 Cost Comparison: Energy Efficiency Matters

Compared to an older 0.75HP pump operating less efficiently:

❌ Older 0.75HP pump (0.65kW input):

• Seasonal operation cost: 0.65 × 1,440 × £0.26 = £243/year

✅ AQM051 (0.58kW input):

• Seasonal operation cost: £217/year

💰 Annual Saving: £26 (11% reduction) ⏱ 5-Year Saving: £130

The AQM051’s efficient hydraulic design means you get comparable performance to larger pumps while consuming less electricity—real savings that compound year after year.

🎯 Real World Examples & Applications

🏊 Domestic Swimming Pools (Up to 60m³)

Perfect for small to medium residential pools, the AQM051 provides efficient filtration and circulation for pools up to 60 cubic metres. Running 6-8 hours daily during pool season ensures crystal-clear water while maintaining energy efficiency. Typical installation includes connection to sand or cartridge filtration systems with optional heating integration.

🛁 Hot Tubs & Spa Systems

Excellent choice for circulation in domestic spa installations and hot tubs requiring reliable water movement. The corrosion-resistant 316 stainless steel mechanical seal handles elevated temperatures and chemical exposure from spa sanitizers including bromine and chlorine-based systems.

🌊 Garden Ponds & Koi Systems

Ideal for decorative pond circulation and koi pond filtration systems up to approximately 15,000 litres. The large strainer basket effectively captures debris while the efficient motor provides continuous water movement for oxygenation and filtration without excessive energy consumption.

⛲ Water Features & Fountains

Provides reliable circulation for ornamental water features, cascading fountains, and decorative waterfall installations in residential and light commercial settings. Quiet operation makes it suitable for placement near patios and entertaining areas.

🔄 Replacement & Retrofit Applications

An excellent upgrade from aging pumps in existing pool systems. The standard 50mm quick-connect unions ensure compatibility with most existing plumbing, while the compact 497mm length fits in tight equipment rooms. Upgrading to the AQM051’s efficient design can reduce electricity costs by 10-15% compared to older inefficient models.

💡 Cost Savings Examples

📍 Scenario 1: Replacing a 10-Year-Old 0.75HP Pump

Old System:

• Older 0.75HP pump with reduced efficiency: ~0.70kW input power
• Seasonal operation: 8 hours/day × 180 days = 1,440 hours
• ❌ Annual cost: 0.70 × 1,440 × £0.26 = £262

New AQM051 System:

• Efficient 0.5HP pump: 0.58kW input power
• Same operational schedule
• ✅ Annual cost: 0.58 × 1,440 × £0.26 = £217

💰 Annual Savings: £45 ⏱ Payback Period: Approximately 5-6 years (assuming pump cost of £250-300) 📈 10-Year Savings: £450 (not accounting for future energy price increases)

📍 Scenario 2: Optimizing Pool Runtime

Many pool owners over-run their pumps. With the AQM051’s efficient circulation:

Previous Setup:

• Running pump 10 hours/day (excessive for most pools)
• Annual hours: 10 × 180 = 1,800 hours
• ❌ Annual cost: 0.58 × 1,800 × £0.26 = £271

Optimized Setup:

• Running pump 7 hours/day (sufficient for most domestic pools)
• Annual hours: 7 × 180 = 1,260 hours
• ✅ Annual cost: 0.58 × 1,260 × £0.26 = £190

💵 Annual Savings: £81 (30% reduction through optimized runtime)

The AQM051’s efficient design allows you to potentially reduce runtime while maintaining water quality, creating additional savings beyond pump efficiency alone.

📥 Downloads & Resources

Access comprehensive technical documentation and installation guidance:

📄 Installation and Operation Manual – Complete installation instructions, wiring diagrams, maintenance procedures, and troubleshooting guidance (Multi-language manual)

📄 Product Brochure & Specifications – Detailed specifications, performance curves, sound level data, and dimensional drawings for all pump models

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🏆 Why Buy From Parts4tubs?

✅ Genuine OEM Products – We supply only authentic manufacturer components, never cheap imitations that compromise performance and longevity

✅ Expert Technical Support – Our team understands commercial pool equipment and can provide installation guidance and troubleshooting assistance

✅ Competitive Pricing – Direct sourcing means better value without compromising on quality or service

✅ Fast UK Dispatch – Most items ship same-day for orders placed before 2pm, getting your equipment to you quickly

✅ Comprehensive Documentation – Every pump includes full installation manuals and technical specifications for proper installation and maintenance

✅ Trade & Commercial Accounts Available – Special pricing and terms for installers, pool maintenance companies, and commercial facility managers

✨ Summary

The AQM051 0.5HP single-phase pump delivers professional-grade performance and reliability in a compact, energy-efficient package ideal for domestic swimming pools, spas, ponds, and water circulation systems. With its advanced hydraulic design, commercial-grade 316 stainless steel mechanical seal, patented secondary seal protection, and robust thermoplastic construction, this pump provides years of trouble-free operation with minimal maintenance requirements.

Running at approximately £217 annually for typical seasonal pool operation, the AQM051 offers genuine long-term value through reduced energy consumption compared to less efficient alternatives. Whether you’re installing a new system or upgrading aging equipment, the AQM051 represents the intelligent choice for reliable, cost-effective water circulation.