💧 InverHero IH20 Variable Speed Pump – Full-Inverter PMSM Technology for Ultimate Pool Efficiency

Transform your pool circulation with cutting-edge inverter technology that delivers whisper-quiet operation and up to 6x energy savings compared to traditional single-speed pumps

📋 Product Overview

The InverHero IH20 represents the next generation of pool pump technology, featuring full-inverter control paired with a Permanent Magnet Synchronous Motor (PMSM). Unlike conventional AC induction motors, the PMSM design generates torque at zero speed and delivers smooth, efficient operation across the entire speed range – from gentle overnight circulation to powerful backwash performance.

Designed for pools between 30-50m³, the IH20 intelligently adjusts its flow rate based on your system’s actual requirements. The built-in smart controller continuously monitors pipeline pressure and automatically recalibrates to maintain optimal water turnover without wasting energy. Whether you’re running a residential pool through the summer months or maintaining year-round circulation, the IH20 delivers crystal-clear water at a fraction of the running cost of traditional pumps.

With built-in WiFi connectivity, four programmable timer zones, and compatibility with external automation systems via RS485, the InverHero IH20 puts complete control at your fingertips – from your poolside controller or anywhere in the world via the InverFlow smartphone app.

⭐ Key Features

✅ Full-Inverter PMSM Motor Technology – Generates smooth torque at all speeds, eliminating the energy waste of traditional AC motors and delivering superior efficiency even at reduced flow rates

✅ Auto-Inverter Mode with Self-Learning – Automatically detects your system’s pressure characteristics and adjusts motor speed to achieve your desired flow rate, maintaining optimal circulation as conditions change

✅ Built-In WiFi Connectivity – Monitor power consumption, adjust settings, and control your pump remotely via the InverFlow smartphone app (iOS and Android compatible)

✅ Four Independent Timer Zones – Program up to four daily operating periods with individual flow rate or capacity settings for each, allowing customised filtration schedules that maximise efficiency

✅ Intelligent Skimmer Mode – Three preset skimmer programmes periodically boost pump speed to clear surface debris, preventing accumulation and keeping your pool surface pristine

✅ Self-Priming Operation – Automatic priming sequence with 1500-second countdown ensures reliable startup even after extended periods of inactivity – no manual intervention required

✅ Whisper-Quiet Performance – PMSM technology and variable speed operation eliminate the harsh noise of single-speed pumps, making the IH20 ideal for residential installations near living spaces

✅ Real-Time Flow Rate Display – View actual circulation rate in m³/h, LPM, IMP GPM, or US GPM directly on the integrated digital controller

✅ RS485 External Control – Integrate seamlessly with pool automation systems, heat pumps, and building management systems via standard Modbus communication protocol

✅ Comprehensive Protection Systems – Built-in safeguards including dry-run detection, overheat protection, undervoltage monitoring, and loss-of-prime alerts protect your investment

🔧 Technical Specifications

Specification	Detail
Model	InverHero IH20
Recommended Pool Volume	30-50 m³
Motor Type	PMSM (Permanent Magnet Synchronous Motor)
Maximum Power Input (P1)	0.75 kW
Voltage	220-240V / 50-60Hz
Maximum Flow Rate (Qmax)	23.4 m³/h
Maximum Head (Hmax)	18.0 m
Flow Rate at 8m Head	18.1 m³/h
Flow Rate at 10m Head	14.1 m³/h
Default Adjustable Flow Range	5-20 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

Understanding your true operating costs is essential when selecting a pool pump. The InverHero IH20’s variable speed technology allows you to run at reduced capacity for extended periods, dramatically cutting energy consumption compared to traditional single-speed pumps.

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 filtration):

Parameter	Value
Average Power Draw	0.12 kW (at 40% capacity)
Daily Runtime	8 hours
Season Length	180 days (April – September)
Total Annual Hours	1,440 hours

✅ InverHero IH20 Annual Cost:

• 0.12 kW × 1,440 hours × £0.26 = £44.93 per year

❌ Traditional Single-Speed Pump (0.75 kW) Annual Cost:

• 0.75 kW × 1,440 hours × £0.26 = £280.80 per year

💰 Annual Saving: £235.87

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

For pools with heating systems requiring continuous circulation:

Parameter	Value
Summer (6 months)	8 hours/day at 50% capacity (0.19 kW)
Winter (6 months)	6 hours/day at 40% capacity (0.12 kW)

Summer Energy:

• 0.19 kW × 8 hours × 180 days = 273.6 kWh

Winter Energy:

• 0.12 kW × 6 hours × 180 days = 129.6 kWh

Total Annual Energy: 403.2 kWh

✅ InverHero IH20 Annual Cost:

• 403.2 kWh × £0.26 = £104.83 per year

❌ Traditional Single-Speed Pump Annual Cost:

• Summer: 0.75 kW × 8 hours × 180 days = 1,080 kWh
• Winter: 0.75 kW × 6 hours × 180 days = 810 kWh
• Total: 1,890 kWh × £0.26 = £491.40 per year

💰 Annual Saving: £386.57

🏢 Scenario 3: Extended Daily Operation (16 Hours)

For pools requiring longer filtration cycles or commercial-style operation:

Parameter	Value
Daily Runtime	16 hours
Operating Capacity	35% (energy-saving filtration mode)
Power Draw	0.09 kW
Season Length	180 days

✅ InverHero IH20 Annual Cost:

• 0.09 kW × 16 hours × 180 days × £0.26 = £67.39 per year

❌ Traditional Single-Speed Pump Annual Cost:

• 0.75 kW × 16 hours × 180 days × £0.26 = £561.60 per year

💰 Annual Saving: £494.21

📈 Energy Comparison Summary

Operation Type	InverHero IH20	Single-Speed Pump	Annual Saving
Seasonal (8 hrs, 6 months)	£44.93	£280.80	£235.87
Year-Round Heated	£104.83	£491.40	£386.57
Extended 16-Hour Daily	£67.39	£561.60	£494.21

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

🏊‍♂ Residential Swimming Pools (30-50m³)

The IH20 is perfectly sized for typical UK domestic pools. Programme two daily filtration cycles – morning and evening – at reduced capacity to maintain crystal-clear water while minimising energy costs and noise disturbance. The auto-inverter mode ensures adequate turnover even as your filter becomes loaded between backwashes.

🔄 Upgrading from Single-Speed Pumps

Replacing an aging single-speed pump with the IH20 delivers immediate benefits: quieter operation, lower electricity bills, and intelligent automation. The 2″ union connections and standard plumbing dimensions make retrofitting straightforward. Most installations can be completed in under half a day.

☀ Solar-Heated Pool Systems

Variable speed operation pairs perfectly with solar heating systems. Run the pump at higher capacity during peak sunlight hours to maximise heat collection, then reduce to minimum circulation overnight. The four-zone timer makes this scheduling effortless.

🛁 Swim Spas and Exercise Pools

For swim spas and smaller exercise pools within the 30-50m³ range, the IH20 provides the flexibility to adjust flow rates for different activities. Boost to full power for jet-assisted swimming, then reduce to gentle circulation for relaxation – all controlled from your smartphone.

🏠 Noise-Sensitive Installations

PMSM motors and variable speed operation eliminate the harsh startup surge and constant drone of traditional pumps. Install the IH20 close to bedrooms, patios, or neighbouring properties without concern about noise complaints.

💡 Cost Savings Examples

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

Situation: Your existing 0.75kW single-speed pump runs 8 hours daily for 6 months.

❌ Current Annual Running Cost:

• 0.75 kW × 1,440 hours × £0.26 = £280.80/year

✅ InverHero IH20 at 40% Capacity:

• 0.12 kW × 1,440 hours × £0.26 = £44.93/year

💰 Annual Saving: £235.87 📈 5-Year Saving: £1,179.35 ⏱ Payback Period: Approximately 2.7 years (based on RRP of £635)

📍 Scenario: Switching from Premium Single-Speed to Variable Speed

Situation: Upgrading from a quality 1.1kW single-speed pump running 10 hours daily.

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

• 1.1 kW × 1,800 hours × £0.26 = £514.80/year

✅ InverHero IH20 at Optimised Settings:

• Average 0.15 kW × 1,800 hours × £0.26 = £70.20/year

💰 Annual Saving: £444.60 📈 3-Year Saving: £1,333.80 ⏱ Payback Period: Under 1.5 years

📍 Scenario: Commercial-Style 24/7 Operation

Situation: Holiday let or rental property requiring continuous circulation.

❌ Traditional Pump (0.75kW, 24 hours, 180 days):

• 0.75 kW × 4,320 hours × £0.26 = £842.40/year

✅ InverHero IH20 (Low-speed 24/7 at 30% capacity):

• 0.07 kW × 4,320 hours × £0.26 = £78.62/year

💰 Annual Saving: £763.78 📈 2-Year Saving: £1,527.56

📥 Downloads & Resources

📄 InverHero Installation & Operation Manual – Comprehensive 25-page guide covering installation, operation, WiFi setup, external control wiring, troubleshooting, and maintenance procedures (PDF)

📄 InverHero Product Brochure – Overview of InverHero range features, technical specifications, and energy comparison data (PDF)

🏆 Why Choose the InverHero IH20?

✅ Proven Energy Savings – Full-inverter PMSM technology delivers up to 6x more efficiency than single-speed pumps, with documented energy consumption as low as 1.2 kWh per day compared to 7.2 kWh for traditional pumps

✅ Smart Pool Integration – Built-in WiFi and RS485 connectivity allows seamless integration with home automation, heat pump controllers, and smartphone management via the free InverFlow app

✅ Whisper-Quiet Operation – Variable speed control and premium PMSM motor eliminate the noise and vibration associated with conventional pumps, perfect for residential settings

✅ Self-Adjusting Intelligence – Auto-calibration and self-learning algorithms continuously optimise performance based on your actual system characteristics – set your desired flow rate and let the pump do the rest

✅ Comprehensive Protection – Multiple built-in safeguards protect against dry running, overheating, power surges, and loss of prime, extending equipment life and preventing costly damage

✅ Professional-Grade Build Quality – IP55 rated enclosure, Class F insulation, and salt pool compatibility (up to 5g/L) ensure reliable performance in demanding conditions with a full 2-year manufacturer warranty

🛒 Why Buy From Parts4Tubs?

✅ Specialist Pool & Spa Expertise – Dedicated technical support from professionals who understand pool circulation systems and can advise on sizing, installation, and optimisation

✅ Competitive Pricing – Direct supply relationships mean you get premium equipment at fair prices without inflated retail markups

✅ Fast UK Delivery – Stock held in the UK for prompt dispatch, getting your equipment to you quickly

✅ Technical Support – Access to knowledgeable staff who can assist with product selection, installation queries, and troubleshooting

✅ Comprehensive Documentation – Full access to manufacturer manuals, installation guides, and technical resources

✅ Genuine Products – Authorised supply of authentic InverHero equipment with full manufacturer warranty support

✨ Summary

The InverHero IH20 Variable Speed Pump delivers everything a modern pool owner demands: intelligent automation, smartphone connectivity, whisper-quiet operation, and dramatic energy savings that can reduce your annual running costs by over £400 compared to traditional single-speed pumps. With its advanced PMSM motor, self-learning flow control, and comprehensive protection systems, the IH20 provides reliable, efficient pool circulation for years to come. For pools between 30-50m³, this pump represents the smart choice for both new installations and upgrades from aging equipment.