💧 InverHero IH24 Variable Speed Pump – Higher Capacity PMSM Technology for Medium to Large Pools

Powerful 1.05kW full-inverter pump delivering exceptional flow rates up to 26 m³/h while slashing energy bills by up to 83% compared to traditional single-speed pumps

📋 Product Overview

The InverHero IH24 brings full-inverter PMSM technology to medium and larger pools, delivering the intelligent flow control and energy efficiency that modern pool owners demand. Designed for pools between 40-70m³, this higher-capacity model provides substantially greater flow rates than the IH20 while maintaining the same whisper-quiet operation and smart automation features.

At the heart of the IH24 lies a Permanent Magnet Synchronous Motor (PMSM) – a technology that generates smooth torque from zero speed, enabling precise flow control across the entire operating range. Unlike traditional AC induction motors that waste energy at reduced speeds, the PMSM design delivers optimal efficiency whether you’re running gentle overnight circulation at 30% capacity or powering through a backwash cycle at full output.

The integrated smart controller continuously monitors your system’s pressure characteristics through its self-learning algorithm, automatically adjusting motor speed to maintain your desired flow rate as filter loading changes throughout the week. With built-in WiFi connectivity, four programmable timer zones, and RS485 compatibility for professional automation systems, the IH24 puts sophisticated pool management within reach – controlled from the poolside display or anywhere in the world via the InverFlow smartphone app.

⭐ Key Features

✅ 1.05kW Full-Inverter PMSM Motor – Higher capacity motor delivers flow rates up to 26 m³/h while maintaining superior efficiency across all speed settings, ideal for pools requiring greater water turnover

✅ Auto-Inverter Mode with Self-Learning – Intelligent system detects pipeline pressure characteristics and continuously adjusts motor speed to achieve your target flow rate, automatically compensating as filter loading increases

✅ Built-In WiFi with InverFlow App – Monitor real-time power consumption, adjust flow rates, set timers, and control your pump remotely from iOS or Android devices – manage your pool from anywhere

✅ Four Independent Timer Zones – Programme customised daily schedules with different flow rates or capacity settings for each period, enabling optimised filtration that balances water quality with energy savings

✅ Three-Preset Skimmer Mode – Automated surface skimming programmes periodically boost pump speed to clear floating debris, maintaining a pristine pool surface without manual intervention

✅ Reliable Self-Priming Operation – Automatic priming sequence with adjustable countdown (up to 1500 seconds) ensures dependable startup after extended shutdown periods or maintenance

✅ Ultra-Quiet PMSM Performance – Smooth torque delivery and variable speed operation eliminate the harsh noise and vibration of conventional pumps, perfect for installations near living spaces or neighbours

✅ Multi-Format Flow Display – View real-time circulation rate in your preferred units: m³/h, LPM, Imperial GPM, or US GPM directly on the clear digital controller

✅ Comprehensive External Control – Integrate with automation systems via RS485 Modbus protocol, analog input (0-10V or 0-20mA), or simple digital switching for maximum flexibility

✅ Built-In Protection Systems – Automatic safeguards including dry-run detection, high-temperature warning with speed reduction, undervoltage protection, and loss-of-prime alerts protect your investment

🔧 Technical Specifications

Specification	Detail
Model	InverHero IH24
Recommended Pool Volume	40-70 m³
Motor Type	PMSM (Permanent Magnet Synchronous Motor)
Maximum Power Input (P1)	1.05 kW
Voltage	220-240V / 50-60Hz
Maximum Flow Rate (Qmax)	26.0 m³/h
Maximum Head (Hmax)	20.0 m
Flow Rate at 8m Head	23.0 m³/h
Flow Rate at 10m Head	19.3 m³/h
Default Adjustable Flow Range	5-25 m³/h
Variable Speed Range	30% – 120% capacity
Connection Size	2″ unions (included)
Union Compatibility	48.5 / 50 / 60.3 / 63mm
Cable Length	2.5m
Operating Temperature (Ambient)	-10°C to 42°C
Water Temperature Range	5°C to 50°C
Salt Pool Compatibility	Up to 0.5% (5g/L)
Maximum Installation Height	2m above water level
Humidity Tolerance	≤90% RH (at 20°C ±2°C)
Insulation Class	Class F, IP55
Communication	Built-in WiFi, RS485 Modbus
External Control Options	Digital input (4-pin), Analog input (0-10V or 0-20mA), RS485
Warranty	2 Years

💰 Usage Costs & Running Expenses

📊 Annual Running Cost Calculation

The InverHero IH24’s variable speed capability transforms your energy consumption. Running at optimised low speeds for filtration uses a fraction of the power compared to traditional single-speed pumps that must run at full output regardless of actual requirements.

Base Energy Rate Used: £0.26 per kWh (UK average, Q4 2025 – Ofgem Price Cap)

🏊 Scenario 1: Seasonal Residential Pool (6 Months Operation)

Running at optimal efficiency (approximately 40% capacity for standard filtration):

Parameter	Value
Average Power Draw	0.17 kW (at 40% capacity)
Daily Runtime	8 hours
Season Length	180 days (April – September)
Total Annual Hours	1,440 hours

✅ InverHero IH24 Annual Cost:

• 0.17 kW × 1,440 hours × £0.26 = £63.65 per year

❌ Traditional Single-Speed Pump (1.1 kW) Annual Cost:

• 1.1 kW × 1,440 hours × £0.26 = £411.84 per year

💰 Annual Saving: £348.19

♨ Scenario 2: Year-Round Heated Pool (12 Months Operation)

For pools with heating systems requiring continuous circulation:

Parameter	Value
Summer (6 months)	10 hours/day at 50% capacity (0.26 kW)
Winter (6 months)	6 hours/day at 40% capacity (0.17 kW)

Summer Energy:

• 0.26 kW × 10 hours × 180 days = 468 kWh

Winter Energy:

• 0.17 kW × 6 hours × 180 days = 183.6 kWh

Total Annual Energy: 651.6 kWh

✅ InverHero IH24 Annual Cost:

• 651.6 kWh × £0.26 = £169.42 per year

❌ Traditional Single-Speed Pump Annual Cost:

• Summer: 1.1 kW × 10 hours × 180 days = 1,980 kWh
• Winter: 1.1 kW × 6 hours × 180 days = 1,188 kWh
• Total: 3,168 kWh × £0.26 = £823.68 per year

💰 Annual Saving: £654.26

🏢 Scenario 3: Extended Daily Operation (16 Hours)

For pools requiring longer filtration cycles or higher bather loads:

Parameter	Value
Daily Runtime	16 hours
Operating Capacity	35% (energy-saving filtration mode)
Power Draw	0.13 kW
Season Length	180 days

✅ InverHero IH24 Annual Cost:

• 0.13 kW × 16 hours × 180 days × £0.26 = £97.34 per year

❌ Traditional Single-Speed Pump Annual Cost:

• 1.1 kW × 16 hours × 180 days × £0.26 = £823.68 per year

💰 Annual Saving: £726.34

📈 Energy Comparison Summary

Operation Type	InverHero IH24	Single-Speed Pump	Annual Saving
Seasonal (8 hrs, 6 months)	£63.65	£411.84	£348.19
Year-Round Heated	£169.42	£823.68	£654.26
Extended 16-Hour Daily	£97.34	£823.68	£726.34

Calculations based on UK electricity rate of £0.26/kWh (Ofgem Q4 2025 Price Cap). Actual savings depend on usage patterns, local energy rates, and system configuration.

🎯 Real World Examples & Applications

🏊‍♂ Medium to Large Residential Pools (40-70m³)

The IH24 delivers the flow rates needed for proper water turnover in larger domestic pools. With a nominal flow rate of 23 m³/h at 8m head, even a 70m³ pool achieves complete circulation within approximately 3 hours. Programme morning and evening filtration cycles at reduced capacity to maintain crystal-clear water while keeping energy costs minimal.

🔄 Upgrading from Older 1-1.5HP Single-Speed Pumps

Many pools in the 40-70m³ range currently run aging single-speed pumps rated at 1-1.5HP (0.75-1.1kW). The IH24 provides equivalent or superior flow performance while slashing energy consumption by up to 83%. Standard 2″ union connections ensure straightforward retrofitting with minimal pipework modification.

🌊 Pools with Water Features

If your pool includes water features, spillways, or deck jets that require higher flow rates during operation, the IH24’s programmable timer zones allow you to schedule high-capacity periods for feature operation while returning to efficient low-speed circulation for standard filtration.

☀ Solar Heating Optimisation

Maximise heat capture from solar panels by scheduling higher pump speeds during peak sunlight hours when heat gain is greatest. The IH24’s precise flow control allows you to fine-tune circulation rates for optimal thermal transfer, then reduce to minimum overnight circulation to retain heat.

🏢 Holiday Lets and Rental Properties

Properties with pools require reliable, efficient circulation even when unoccupied. The IH24’s WiFi connectivity enables remote monitoring and control, while the self-learning auto-inverter mode maintains optimal water quality without manual adjustment. Low-speed continuous operation keeps water fresh at minimal cost between lettings.

🛁 Large Swim Spas and Plunge Pools

For larger swim spas and exercise pools within the 40-70m³ range, the IH24 provides the flexibility to boost flow for jet-assisted swimming sessions, then reduce to gentle circulation for relaxation or overnight operation.

💡 Cost Savings Examples

📍 Scenario: Replacing a 15-Year-Old 1.1kW Single-Speed Pump

Situation: Your existing pump runs 8 hours daily for a 6-month season.

❌ Current Annual Running Cost:

• 1.1 kW × 1,440 hours × £0.26 = £411.84/year

✅ InverHero IH24 at 40% Capacity:

• 0.17 kW × 1,440 hours × £0.26 = £63.65/year

💰 Annual Saving: £348.19 📈 5-Year Saving: £1,740.95 ⏱ Payback Period: Approximately 2.3 years (based on RRP of £805)

📍 Scenario: Upgrading from a 1.5kW Commercial-Grade Pump

Situation: Your oversized pump runs 10 hours daily, consuming far more energy than necessary.

❌ Current Annual Running Cost (6-month season):

• 1.5 kW × 1,800 hours × £0.26 = £702.00/year

✅ InverHero IH24 at Optimised 45% Capacity:

• 0.21 kW × 1,800 hours × £0.26 = £98.28/year

💰 Annual Saving: £603.72 📈 3-Year Saving: £1,811.16 ⏱ Payback Period: Under 1.4 years

📍 Scenario: Year-Round Pool with Heat Pump Integration

Situation: Heated pool requiring continuous 24/7 circulation during winter months.

❌ Traditional Pump (1.1kW, 24 hours × 180 winter days):

• 1.1 kW × 4,320 hours × £0.26 = £1,235.52/year (winter only)

✅ InverHero IH24 (Low-speed 24/7 at 30% capacity):

• 0.10 kW × 4,320 hours × £0.26 = £112.32/year (winter only)

💰 Winter Season Saving: £1,123.20 📈 Combined Annual Saving (with summer): £1,400+ potential

📍 Scenario: Comparison with Standard Variable Speed Pump

Situation: Considering alternatives to PMSM technology.

The InverHero IH24’s PMSM motor maintains higher efficiency at reduced speeds compared to standard AC variable speed pumps. While both reduce energy consumption versus single-speed models, PMSM technology delivers approximately 10-15% additional efficiency at typical filtration speeds (30-50% capacity), translating to meaningful additional savings over the pump’s lifetime.

💰 Additional 5-Year Saving vs Standard VS Pump: £75-150 (estimated)

📥 Downloads & Resources

📄 InverHero Installation & Operation Manual – Comprehensive 25-page guide covering installation requirements, operating modes, WiFi setup via InverFlow app, RS485 external control wiring, error code troubleshooting, and maintenance procedures (PDF)

📄 InverHero Product Brochure – Overview of the complete InverHero range including IH24 specifications, PMSM technology explanation, energy comparison data, and application conditions (PDF)

🏆 Why Choose the InverHero IH24?

✅ Ideal Capacity for Medium-Large Pools – With 23 m³/h flow at 8m head and up to 26 m³/h maximum, the IH24 delivers the turnover rates larger pools require while the IH20 might struggle

✅ Proven PMSM Efficiency – Full-inverter Permanent Magnet Synchronous Motor technology provides up to 6x energy efficiency compared to single-speed pumps, with documented daily consumption as low as 1.2-1.7 kWh versus 7+ kWh for traditional models

✅ Complete Smart Control – Built-in WiFi connectivity, four programmable timer zones, auto-inverter mode with self-learning, and RS485 compatibility provide total flexibility for manual or automated operation

✅ Professional-Grade Reliability – IP55 rated enclosure, Class F insulation, operating range from -10°C to 42°C ambient, and salt pool compatibility up to 5g/L ensure dependable performance in demanding conditions

✅ Whisper-Quiet Operation – PMSM technology eliminates the noise and vibration of conventional pumps, making the IH24 suitable for installations close to living areas, patios, or neighbouring properties

✅ Comprehensive 2-Year Warranty – Full manufacturer warranty provides peace of mind, backed by accessible technical support for installation guidance, WiFi setup, and system integration

🛍️ Why Buy From Parts4Tubs?

✅ Pool & Spa Equipment Specialists – Expert knowledge of circulation systems means you get accurate advice on pump sizing, installation requirements, and system optimisation

✅ Competitive Direct Pricing – Strong supplier relationships deliver premium equipment at fair prices without excessive retail markups

✅ Fast UK Shipping – UK-held stock ensures prompt dispatch and delivery, minimising downtime when you need equipment quickly

✅ Dedicated Technical Support – Knowledgeable team available to assist with product selection, installation queries, WiFi setup, and troubleshooting

✅ Complete Documentation Access – Full manufacturer manuals, technical specifications, and installation guides available for download

✅ Genuine Authorised Products – Authentic InverHero equipment supplied with full manufacturer warranty coverage and support

✨ Summary

The InverHero IH24 Variable Speed Pump delivers the perfect balance of capacity and efficiency for pools between 40-70m³. With its advanced PMSM motor technology, intelligent self-learning flow control, and comprehensive smart features including WiFi connectivity and four-zone timer programming, the IH24 can reduce your annual energy costs by over £650 compared to traditional single-speed pumps. Whether upgrading aging equipment or specifying a new installation, the IH24 provides the flow rates larger pools demand while operating with whisper-quiet efficiency – all backed by a 2-year manufacturer warranty and professional technical support.