⚡ InverEco DE28 VS 1.50kW Variable Speed Pool Pump

The flagship single-phase pump—delivering exceptional 31 m³/h flow for large pools with whisper-quiet operation and up to 90% energy savings.

📋 Product Overview

The InverEco DE28 VS 1.50kW Variable Speed Pool Pump represents the pinnacle of the single-phase InverEco range, delivering commercial-grade circulation capacity for the largest residential pools and demanding light commercial installations. Powered by Aquagem’s advanced InverSilence® inverter technology, this flagship pump combines exceptional flow rates with the whisper-quiet operation and remarkable efficiency that distinguish the entire InverEco family.

Purpose-built for substantial pools between 60,000 and 90,000 litres (60–90 m³), the DE28 VS addresses the most demanding residential applications—large garden pools, expansive indoor facilities, premium swim spas, and properties with extensive water feature systems. The comprehensive variable speed control from 30% to 100% enables precise output matching across all operating conditions, from economical overnight filtration through to maximum-power cleaning and backwash cycles.

The IE4 premium efficiency motor achieves the highest internationally recognised performance classification, delivering electricity savings of up to 90% compared to traditional single-speed pumps of equivalent output. Despite its powerful 1.50 kW capacity, the intelligent inverter drive maintains noise levels as low as 36 dB—quieter than normal conversation—ensuring peaceful poolside environments even during extended operation.

⭐ Key Features

✅ Exceptional 31 m³/h Maximum Flow – Industry-leading circulation capacity handles the largest residential pools, commercial-grade swim spas, and complex multi-feature installations.

✅ Variable Speed Control (30%–100%) – Complete output flexibility precisely matches requirements from gentle filtration through to demanding cleaning and rapid backwashing.

✅ InverSilence® Inverter Technology – Aquagem’s flagship motor control system delivers superior efficiency, exceptionally smooth operation, and outstanding reliability.

✅ 20.5 Metre Maximum Head Pressure – Exceptional pressure capability conquers challenging installations with extensive pipework, significant elevation changes, or multiple water features.

✅ Ultra-Quiet 36 dB Operation – Remarkably silent despite powerful capacity—maintaining tranquil poolside environments throughout extended operational periods.

✅ IE4 Premium Efficiency Motor – Highest internationally recognised efficiency classification delivers transformative energy savings versus traditional single-speed alternatives.

✅ Smart Digital Controller – Full-touch interface provides four programmable timers, real-time power consumption monitoring, and intuitive one-touch backwash activation.

✅ Soft-Start Technology – Eliminates damaging startup surges, protecting motor windings, mechanical seals, and plumbing connections for extended service life.

✅ Saltwater Compatible (0.5% Salinity) – Engineered for reliable long-term operation in both freshwater and mild saltwater environments.

✅ Professional 2″ Union Fittings (D63) – Complete with high-quality connections for straightforward installation and convenient maintenance access.

🔧 Technical Specifications

Specification	Value
Model	InverEco DE28 VS
Power Output (P1)	1.50 kW
Voltage	220–240 V, 50/60 Hz (Single-Phase)
Current Draw	6.5 A
Maximum Flow Rate (Qmax)	31.0 m³/h
Maximum Head (Hmax)	20.5 m
Circulation Flow @ 8m Head	30.0 m³/h
Circulation Flow @ 10m Head	28.0 m³/h
Recommended Pool Volume	60–90 m³ (60,000–90,000 litres)
Speed Range	30%–100% variable
Connection Size	2″ unions (D63)
Noise Level (Minimum)	36 dB
Motor Efficiency Class	IE4 (Premium Efficiency)
Saltwater Tolerance	Up to 0.5% salinity
Packing Dimensions	585 × 255 × 325 mm
Warranty	2–4 Years (region dependent)

💰 Usage Costs & Running Expenses

The InverEco DE28 VS demonstrates that high-capacity pool circulation need not demand equally high electricity bills. Variable speed technology fundamentally transforms the economics of powering larger pools, delivering substantial flow when required while consuming minimal energy during routine operation.

📊 Annual Running Cost Calculation

Base Parameters:

• Maximum power consumption: 1.50 kW
• UK electricity rate: £0.2635 per kWh (Q4 2025 Ofgem price cap)

Variable Speed Reality: At typical filtration speeds (50–70%), actual power consumption drops dramatically below the maximum rating, delivering transformative savings compared to fixed-speed alternatives that must run at full power constantly.

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

Usage Pattern: 8 hours daily filtration at 50% speed for 180 days

Parameter	Calculation
Power at 50% Speed	~0.75 kW (typical)
Daily Runtime	8 hours
Season Length	180 days (April–September)
Annual Hours	1,440 hours
Energy Consumption	0.75 kW × 1,440 hours = 1,080 kWh
✅ Annual Cost	1,080 kWh × £0.2635 = £284.58

🏊 Scenario 2: Large Pool – Extended Filtration for Premium Water Quality

Usage Pattern: 12 hours daily at 60% speed for 180 days

Parameter	Calculation
Power at 60% Speed	~0.92 kW (typical)
Daily Runtime	12 hours
Season Length	180 days
Annual Hours	2,160 hours
Energy Consumption	0.92 kW × 2,160 hours = 1,987 kWh
✅ Annual Cost	1,987 kWh × £0.2635 = £523.57

🏢 Scenario 3: Year-Round Indoor Pool or Commercial Installation

Usage Pattern: 14 hours daily at 60% speed for 365 days

Parameter	Calculation
Power at 60% Speed	~0.92 kW (typical)
Daily Runtime	14 hours
Annual Hours	5,110 hours
Energy Consumption	0.92 kW × 5,110 hours = 4,701 kWh
✅ Annual Cost	4,701 kWh × £0.2635 = £1,238.71

🌊 Scenario 4: Premium Swim Spa – Continuous Circulation

Usage Pattern: 24/7 low-speed circulation at 30% speed

Parameter	Calculation
Power at 30% Speed	~0.52 kW (typical)
Daily Runtime	24 hours
Annual Hours	8,760 hours
Energy Consumption	0.52 kW × 8,760 hours = 4,555 kWh
✅ Annual Cost	4,555 kWh × £0.2635 = £1,200.24

⚡ Comparison: Variable Speed vs Single-Speed Pumps

Traditional single-speed pumps delivering equivalent flow rates typically consume 2.2–3.0 kW and must operate at full power constantly. The savings potential is transformative.

Pump Type	Power	Annual Hours (Seasonal 8hr)	Annual kWh	Annual Cost	vs DE28 VS
❌ Single-Speed 2.2 kW	2.20 kW	1,440	3,168 kWh	£834.77	—
❌ Single-Speed 2.5 kW	2.50 kW	1,440	3,600 kWh	£948.60	—
❌ Single-Speed 3.0 kW	3.00 kW	1,440	4,320 kWh	£1,138.32	—
✅ InverEco DE28 VS @ 50%	0.75 kW	1,440	1,080 kWh	£284.58	—

💰 Annual Savings vs 2.2 kW Single-Speed: £550.19

💰 Annual Savings vs 2.5 kW Single-Speed: £664.02

💷 Annual Savings vs 3.0 kW Single-Speed: £853.74

📈 5-Year Savings vs 3.0 kW Single-Speed: £4,268.70

🎯 Real World Examples & Applications

🏊 Large Residential Pools (60–90 m³)

The DE28 VS is the definitive choice for substantial family pools where maintaining water quality across larger volumes demands serious circulation capacity. A 75 m³ pool achieves complete water turnover in approximately 2.5 hours at 60% speed, while the exceptional 31 m³/h maximum flow powers through demanding cleaning sessions, chemical distribution, and rapid filter backwashing.

🌊 Premium Swim Spas & Endless Pools

High-performance swim spa installations requiring powerful jet systems for serious swimming training benefit enormously from the DE28 VS’s flagship capacity. The ability to deliver gentle 30% circulation during rest periods, then instantly ramp to full power for intensive swimming sessions, optimises both energy consumption and athletic performance.

🏢 Commercial & Semi-Commercial Installations

Boutique hotels, holiday rental properties, wellness centres, private member clubs, and small leisure facilities find the DE28 VS delivers genuine commercial-grade performance at dramatically lower running costs than traditional commercial pumps. The programmable timers and robust construction suit demanding multi-user environments.

🔄 Upgrading from 2.2–3.0 kW Single-Speed Pumps

Owners of larger pools currently running high-powered single-speed pumps experience the most dramatic savings with the DE28 VS. Payback periods under 12 months are typical for heavily-used installations, followed by years of substantial ongoing savings.

🏠 Estate Properties with Multiple Water Features

Prestigious installations incorporating waterfalls, fountains, grotto features, spa jets, and infinity edges require substantial combined flow capacity. The DE28 VS’s powerful output and 20.5m maximum head handles complex plumbing configurations where multiple features create significant system resistance.

♨️ Large Heated Pools – Efficient Heat Distribution

Substantial heated pools benefit from the DE28 VS’s ability to accelerate circulation during heating cycles, distributing warmth efficiently throughout the water volume, then returning to economical low-speed filtration once target temperature is achieved—reducing both pump and heating costs simultaneously.

🏊‍♂️ Training Facilities & Lap Pools

Serious swimmers requiring long lap pools benefit from the DE28 VS’s ability to maintain excellent water quality across extended pool lengths. The powerful circulation ensures consistent chemical distribution and temperature throughout, while variable speed control minimises current interference during training.

💡 Cost Savings Examples

📍 Scenario: Replacing an Ageing 2.5 kW Single-Speed Pump

A pool owner running an older 2.5 kW pump for 8 hours daily during a 6-month season currently spends approximately £949 annually on pump electricity alone.

Current Setup	InverEco DE28 VS
❌ Power: 2.5 kW constant	✅ Power: 0.75 kW (50% speed)
❌ Annual consumption: 3,600 kWh	✅ Annual consumption: 1,080 kWh
❌ Annual cost: £948.60	✅ Annual cost: £284.58

💰 Annual Saving: £664.02

⏱️ Payback Period: Pump investment typically recovered in 12–18 months through electricity savings.

📈 10-Year Saving: £6,640.20

📍 Scenario: High-Use Commercial Pool – Year-Round Operation

A hotel or wellness facility operating year-round with an older 3.0 kW pump running 14 hours daily faces substantial electricity costs:

Operation Pattern	Single-Speed (3.0 kW)	InverEco DE28 VS (0.92 kW @ 60%)
Daily Hours	14 hours	14 hours
Annual Hours	5,110 hours	5,110 hours
Annual kWh	15,330 kWh	4,701 kWh
❌ Annual Cost	£4,039.46	—
✅ Annual Cost	—	£1,238.71

💷 Annual Saving: £2,800.75

📈 5-Year Saving: £14,003.75

⏱️ Payback Period: Typically 3–5 months for high-use commercial installations.

📍 Scenario: Maximising Filtration Without Increasing Costs

Variable speed technology enables dramatically extended filtration for superior water quality while actually reducing electricity expenditure:

Traditional Single-Speed Approach:

• ❌ 8 hours at 2.5 kW = 20 kWh daily = £5.27/day

InverEco DE28 VS Approach:

• ✅ 16 hours at 50% speed (0.75 kW) = 12 kWh daily = £3.16/day

💵 Result: 40% lower daily cost despite doubling filtration time—delivering crystal-clear water with significant savings.

📍 Scenario: Capacity Comparison Within InverEco Range

For pools at the boundary between model recommendations, the DE28 offers maximum single-phase capacity:

Model	Power @ 60%	Flow @ 8m Head	Annual Cost (12hr/day, seasonal)	Best For
InverEco DE23 VS	~0.68 kW	25 m³/h	£387.02	40–70 m³ pools
InverEco DE28 VS	~0.92 kW	30 m³/h	£523.57	60–90 m³ pools

💵 Extra Capacity Premium: £136.55/year for 20% more flow and maximum single-phase power—essential for the largest installations.

📍 Scenario: Single-Phase vs Three-Phase Consideration

For very large pools approaching 90 m³, the DE28 VS offers the maximum capacity available on standard single-phase domestic supply, eliminating the need for expensive three-phase electrical installation:

Three-Phase Alternative Considerations:

• ❌ Three-phase supply installation: £2,000–£5,000+
• ❌ Higher standing charges on three-phase tariffs
• ❌ More complex electrical infrastructure

DE28 VS Advantages:

• ✅ Maximum single-phase capacity (31 m³/h)
• ✅ Standard 220–240V domestic supply
• ✅ No electrical upgrade required
• ✅ Lower infrastructure costs

📥 Downloads & Resources

📄 InverEco Complete Specifications Sheet – Full technical specifications for the entire InverEco range (DE10, DE15, DE19, DE23, DE28) including performance curves, dimensional data, and electrical parameters. Download PDF

🌟 Why Buy From Parts4Tubs?

✅ Specialist Large Pool Expertise – Experienced guidance for sizing high-capacity pumps correctly, ensuring optimal performance for substantial installations.

✅ Competitive UK Pricing – Direct manufacturer relationships deliver outstanding value on flagship equipment.

✅ Fast Nationwide Delivery – Prompt dispatch minimises downtime for pool owners and commercial operators.

✅ Professional Technical Support – Expert assistance with installation planning, electrical requirements, and system integration.

✅ Full Manufacturer Warranty – Complete 2–4 year warranty coverage through authorised UK distribution channels.

✅ Comprehensive Equipment Range – One-stop access to filters, heaters, controllers, chemicals, and accessories for complete pool systems.

✨ Summary

The InverEco DE28 VS 1.50kW Variable Speed Pool Pump represents the ultimate in single-phase pool circulation technology, delivering exceptional 31 m³/h maximum flow for pools between 60,000 and 90,000 litres. With its industry-leading 20.5m head capability, IE4 premium efficiency motor achieving up to 90% energy savings, and remarkably quiet 36 dB operation, this flagship pump handles the most demanding residential and light commercial applications while dramatically reducing running costs. The intelligent smart controller, soft-start protection, and robust saltwater-compatible construction make the DE28 VS the definitive choice for owners of large pools, premium swim spas, and commercial installations seeking maximum single-phase performance with transformative energy efficiency.