💧 InverSmart DM28 Variable Speed Pool Pump – 28m³/h @ 10m Head

🏆 Premium PMSM Technology Delivering Whisper-Quiet Operation and Up to 90% Energy Savings

📋 Product Overview

The InverSmart DM28 represents the pinnacle of residential pool pump technology, combining cutting-edge Permanent Magnetic Synchronous Motor (PMSM) technology with advanced inverter control for exceptional performance and remarkable energy efficiency. This premium variable-speed pump delivers a powerful 28m³/h flow rate at 10m head while operating at an incredibly quiet 36 decibels – quieter than a whispered conversation.

Designed for discerning pool owners who demand both performance and economy, the DM28 features an intuitive touchscreen control panel with real-time power monitoring, programmable 7-day scheduling, and one-touch backwash functionality. The IE4-rated motor achieves A-rated energy efficiency, enabling the pump to pay for itself within months through dramatically reduced electricity bills.

With full saltwater compatibility, self-priming capability up to 2 metres above water level, and a comprehensive 5-year warranty, the InverSmart DM28 is the intelligent choice for modern pool owners seeking reliability, efficiency, and smart control in one robust package.

⭐ Key Features

✅ PMSM Motor Technology – Permanent Magnetic Synchronous Motor delivers IE4 efficiency rating for maximum energy savings and extended service life

✅ Variable Speed Control (30%-100%) – Adjust pump speed precisely to match your pool’s exact requirements, reducing energy consumption during normal filtration cycles

✅ Ultra-Quiet 36dB Operation – Quieter than a refrigerator, making it ideal for residential installations near living spaces and entertaining areas

✅ Full Touchscreen Controller – Intuitive digital interface displays real-time power consumption in watts, allowing you to monitor running costs instantly

✅ Programmable 7-Day Timer – Set up to 4 different operating periods per day across 7 days for complete automation and optimised energy usage

✅ One-Touch Backwash Mode – Instantly switch to 100% capacity for powerful backwash cleaning without manual adjustments

✅ Self-Priming Design – Install up to 2 metres above water level for flexible positioning and easier maintenance access

✅ Saltwater Ready – Fully compatible with salt-chlorinated pools up to 3.5% salt concentration

✅ Soft Start Technology – Gradual startup from 0 amps prevents electrical surges and extends motor life

✅ 5-Year Manufacturer Warranty – Comprehensive coverage provides complete peace of mind

🔧 Technical Specifications

Specification	Detail
Model	InverSmart DM28
Motor Power (P₁)	1.50 kW
Voltage / Frequency	220–240 V, 50/60 Hz
Maximum Flow (Qmax)	31 m³/h
Flow @ 8m Head	30 m³/h
Flow @ 10m Head	28 m³/h
Maximum Head (Hmax)	20.5 m
Noise Level	~36 dB(A)
Energy Efficiency Class	IE4 – A Rated
Motor Type	PMSM (Permanent Magnetic Synchronous Motor)
Pump Type	Variable Speed, Self-Priming
Speed Control Range	30% – 100%
Salt Water Compatibility	Yes (up to 3.5% concentration)
Control System	Digital Touchscreen with Real-Time Power Display
Scheduling	Up to 4 timers/day, 7-day programmable
External Control Options	Digital Input, RS485, Relay Output
Backwash Mode	One-touch operation
Installation Height	Up to 2m above water level
Water Temperature Range	5°C – 50°C
Ambient Temperature Range	-10°C – 42°C
Humidity Tolerance	<90% RH
Insulation Class	Class F
Protection Rating	IP55
Advised Pool Volume	60 – 90 m³
Packing Dimensions	585 × 255 × 325 mm
Warranty	5 Years

💰 Usage Costs & Running Expenses

Understanding the true cost of running your pool pump is essential for making an informed purchase decision. The InverSmart DM28’s variable speed technology delivers dramatic savings compared to traditional single-speed pumps.

📊 Annual Running Cost Calculation

Energy Rate Used: £0.26 per kWh (UK average, Q4 2025)

🏊 Scenario 1: Standard Residential Pool (8 hours/day, 180-day season)

At 50% Speed (Typical Filtration):

• Power consumption at 50%: ~0.45 kW
• Daily usage: 8 hours × 0.45 kW = 3.6 kWh
• Seasonal usage: 3.6 kWh × 180 days = 648 kWh
• ✅ Annual cost: 648 kWh × £0.26 = £168.48

Compared to Single-Speed Pump (1.1kW constant):

• Daily usage: 8 hours × 1.1 kW = 8.8 kWh
• Seasonal usage: 8.8 kWh × 180 days = 1,584 kWh
• ❌ Annual cost: 1,584 kWh × £0.26 = £411.84

💰 Annual Saving: £243.36

♨️ Scenario 2: Extended Season Pool (12 hours/day, 240 days)

At 40% Speed (Economy Filtration):

• Power consumption at 40%: ~0.35 kW
• Daily usage: 12 hours × 0.35 kW = 4.2 kWh
• Seasonal usage: 4.2 kWh × 240 days = 1,008 kWh
• ✅ Annual cost: 1,008 kWh × £0.26 = £262.08

Compared to Single-Speed Pump (1.1kW constant):

• Daily usage: 12 hours × 1.1 kW = 13.2 kWh
• Seasonal usage: 13.2 kWh × 240 days = 3,168 kWh
• ❌ Annual cost: 3,168 kWh × £0.26 = £823.68

💰 Annual Saving: £561.60

🏢 Scenario 3: Year-Round Heated Pool (16 hours/day, 365 days)

At 45% Speed (Continuous Filtration):

• Power consumption at 45%: ~0.40 kW
• Daily usage: 16 hours × 0.40 kW = 6.4 kWh
• Annual usage: 6.4 kWh × 365 days = 2,336 kWh
• ✅ Annual cost: 2,336 kWh × £0.26 = £607.36

Compared to Single-Speed Pump (1.1kW constant):

• Daily usage: 16 hours × 1.1 kW = 17.6 kWh
• Annual usage: 17.6 kWh × 365 days = 6,424 kWh
• ❌ Annual cost: 6,424 kWh × £0.26 = £1,670.24

💷 Annual Saving: £1,062.88

⚡ Energy Efficiency Summary

Usage Pattern	InverSmart DM28	Single-Speed 1.1kW	Annual Saving
Standard Season (8hr/180d)	£168	£412	💰 £244
Extended Season (12hr/240d)	£262	£824	💰 £562
Year-Round (16hr/365d)	£607	£1,670	💷 £1,063

Calculations based on variable speed operation at typical filtration settings. Actual savings may vary based on pool size, usage patterns, and local electricity rates.

🎯 Real World Examples & Applications

🏠 Residential Family Pool (40-60m³)

The DM28 is ideally suited for medium to large family pools. Running at 40-50% speed provides ample circulation for daily filtration while keeping noise levels barely perceptible. The programmable timer allows you to run the pump during off-peak electricity hours for additional savings. Perfect for gardens where quiet operation is essential during family gatherings and relaxation time.

🌊 Saltwater Pool Systems

Fully compatible with salt chlorinators up to 3.5% salt concentration, the DM28’s corrosion-resistant construction ensures reliable performance in salt-chlorinated environments. The variable speed control allows precise flow matching with your chlorinator’s requirements, optimising chlorine production while minimising energy consumption.

🔄 Upgrade from Single-Speed Pump

Homeowners replacing aging single-speed pumps will experience immediate benefits. The DM28’s 2-inch port connections fit most existing plumbing configurations, and the self-priming capability up to 2m above water level provides installation flexibility. Expect to recoup the upgrade investment within 12-18 months through energy savings alone.

☀️ Solar-Heated Pool Systems

For pools with solar heating, the DM28 provides consistent flow rates essential for efficient heat transfer. Running at higher speeds during peak sunlight hours maximises heat collection, while lower speeds during non-heating periods conserve energy. The real-time power display helps you optimise the balance between heating efficiency and running costs.

🏢 Holiday Let / Rental Property

Property owners managing holiday rentals benefit from the DM28’s reliability and low maintenance requirements. The robust IP55 protection rating handles outdoor installation, while the 5-year warranty provides peace of mind for commercial use. Reduced energy costs directly improve rental property profitability.

💡 Cost Savings Examples

📍 Scenario: Replacing a 10-Year-Old Single-Speed Pump

Current Setup:

• Old pump: 1.5kW single-speed
• Running time: 10 hours/day, 200 days/year
• ❌ Annual energy: 1.5 kW × 10 × 200 = 3,000 kWh
• ❌ Annual cost: 3,000 × £0.26 = £780

After InverSmart DM28 Upgrade:

• Running at 45% speed: ~0.40 kW
• Same 10 hours/day, 200 days
• ✅ Annual energy: 0.40 kW × 10 × 200 = 800 kWh
• ✅ Annual cost: 800 × £0.26 = £208

💰 Annual Saving: £572 ⏱️ Payback Period: Approximately 12-15 months 📈 5-Year Savings: £2,860

📍 Scenario: Comparing to Premium Competitor Variable Speed Pump

Many premium variable speed pumps on the market carry significant price premiums while offering similar performance. The InverSmart DM28 delivers comparable IE4 efficiency and PMSM technology at an accessible price point.

Competitor Premium Pump:

• Purchase price: £1,200+
• Similar energy efficiency
• 3-year warranty typical

InverSmart DM28:

• Competitive purchase price
• Identical IE4 PMSM efficiency
• ✅ 5-year warranty (2 years longer)
• ✅ Full touchscreen with power monitoring
• ✅ External control options (RS485, relay)

💰 Potential Initial Saving: £300-500 ✅ Extended Warranty Value: Additional protection worth £100+

📍 Scenario: Environmental Impact

Beyond financial savings, the InverSmart DM28 significantly reduces your pool’s carbon footprint:

Annual CO₂ Reduction (vs single-speed pump):

• Energy saved: ~2,000 kWh/year (typical usage)
• UK grid carbon intensity: ~0.21 kg CO₂/kWh
• ✅ Annual CO₂ reduction: ~420 kg
• 📈 10-year CO₂ reduction: ~4.2 tonnes

📥 Downloads & Resources

📄 InverSmart Technical Factsheet – Complete specifications and application conditions

📄 InverSmart Full Brochure – Detailed product information including performance curves, dimensions, and technical parameters

🏆 Why Choose This Product

✅ Pay for Itself in Months – With potential annual savings exceeding £500-1,000 depending on usage, the InverSmart DM28 quickly recovers its purchase cost through reduced electricity bills

✅ Whisper-Quiet 36dB Operation – Run your pump day or night without disturbing family, neighbours, or guests. Quieter than most household appliances, the DM28 is ideal for pools near bedrooms, patios, and entertaining spaces

✅ Smart Control at Your Fingertips – The full touchscreen interface provides real-time power monitoring, programmable scheduling, and instant backwash capability. Know exactly what your pump is costing to run at any moment

✅ Future-Proof Technology – External control options including RS485 and relay outputs allow integration with pool automation systems. Soft-start technology protects your electrical system and extends motor life

✅ Industry-Leading 5-Year Warranty – Comprehensive manufacturer warranty exceeds most competitors by 2+ years, demonstrating confidence in the DM28’s build quality and longevity

✅ Proven Reliability – Class F insulation and IP55 protection rating ensure dependable performance in outdoor environments, through British summers and beyond

🛒 Why Buy From Parts4Tubs?

✅ UK-Based Expert Support – Our knowledgeable team understands pool equipment inside and out. We’re here to help with sizing, installation queries, and ongoing support

✅ Fast UK Delivery – Stock items dispatched promptly for quick delivery to your door

✅ Competitive Pricing – We work directly with manufacturers to offer premium products at fair prices

✅ Genuine Products & Full Warranty – All products are genuine with full manufacturer warranty support

✅ Comprehensive Product Range – From pumps to filters, heaters to chemicals, we stock everything your pool needs

✨ Summary

The InverSmart DM28 Variable Speed Pool Pump represents exceptional value for pool owners seeking premium performance without premium pricing. Combining whisper-quiet PMSM motor technology with intelligent variable speed control, the DM28 delivers outstanding energy efficiency that translates directly into lower running costs – often paying for itself within the first year of operation.

With its intuitive touchscreen controls, comprehensive 5-year warranty, and robust construction, this is a pump built to perform reliably season after season. Whether you’re upgrading from an aging single-speed unit or specifying equipment for a new installation, the InverSmart DM28 delivers the perfect balance of performance, efficiency, and value.

Make the smart choice. Choose InverSmart.