🌿 Certikin Inverter Pool Pump CIV135 | 1.35kW Variable Speed – InverSilence Technology

🔇 Whisper-Quiet Operation, Up to 90% Energy Savings & Smart Digital Control – The Future of Pool Circulation Has Arrived

📋 Product Overview

The Certikin CIV135 represents a revolutionary leap forward in swimming pool pump technology. Featuring advanced InverSilence technology, this 1.35kW variable speed pump delivers powerful circulation while consuming up to 90% less energy than traditional single-speed pumps – translating to dramatic reductions in both your electricity bills and environmental footprint.

At the heart of the CIV135 lies a premium IE4-rated Permanent Magnet Synchronous Motor (PMSM) – the highest efficiency class available – combined with full inverter drive technology that allows precise speed control from 30% to 100% capacity. This means you can run quiet, economical filtration during the day and instantly ramp up to full power for backwashing or intensive circulation when needed.

Operating at just 36dB (quieter than a refrigerator), the CIV135 eliminates the constant drone of traditional pool pumps, making it perfect for installations near living areas, bedrooms, or neighbour boundaries. Designed for pools from 50-80m³, with flow rates up to 28.5 m³/h and 20 metres maximum head, this pump handles demanding residential and light commercial applications with ease. Backed by an impressive 5-year manufacturer warranty, the CIV135 delivers exceptional value, performance, and peace of mind.

⭐ Key Features

✅ InverSilence Technology – Revolutionary variable speed control allows precise motor adjustment from 30-100% capacity, delivering exactly the flow you need while minimising energy consumption and noise

✅ Up to 90% Energy Savings – Full inverter drive dramatically reduces electricity costs compared to traditional single-speed pumps, typically saving £1,500+ per year on a busy pool

✅ Whisper-Quiet 36dB Operation – 40% quieter than conventional pumps; runs quieter than a household refrigerator even at full power, perfect for noise-sensitive installations

✅ Premium IE4 Efficiency Motor – Permanent Magnet Synchronous Motor (PMSM) delivers superior efficiency over standard IE3 motors, maximising savings and extending service life

✅ Smart Digital Interface – User-friendly control panel with real-time power consumption display, 4 programmable timers, and one-click backwash function for effortless daily operation

✅ Intelligent Self-Priming – Automatic self-priming system with dry-run protection ensures reliable startup and prevents pump damage from running without water

✅ S316 Stainless Steel Mechanical Seal – Premium seal material provides exceptional durability and corrosion resistance for years of leak-free operation

✅ Salt Water Compatible – Engineered for salt concentrations up to 3.5% (35g/l), making it ideal for modern saltwater chlorination systems

✅ External Control Options – Digital inputs, RS485 communication, and relay outputs allow seamless integration with pool automation systems

✅ IP55 Class F Protection – Industrial-grade sealing and insulation for reliable operation in humid poolside environments

✅ 5-Year Manufacturer Warranty – Comprehensive Certikin backing provides exceptional confidence and long-term protection for your investment

🔧 Technical Specifications

Specification	Details
Model Number	CIV135
Motor Power (P1)	1.35 kW
Motor Type	PMSM (Permanent Magnet Synchronous Motor)
Efficiency Class	IE4 (Super Premium Efficiency)
Electrical Supply	220-240V, Single Phase
Frequency	50/60 Hz
Running Current	6.2A
Maximum Head (Hmax)	20 metres
Maximum Flow Rate (Qmax)	28.5 m³/h
Flow Rate @ 10m Head	24.0 m³/h
Flow Rate @ 8m Head	27.0 m³/h
Advised Pool Volume	50-80 m³
Speed Control Range	30% – 100% (5% increments)
Noise Level	36 dB
Inlet/Outlet Connections	2″ (G2″ internal / FBT 2″ external)
Union Options	48.5 / 50 / 60.3 / 63mm
Motor Protection Rating	IP55, Class F
Mechanical Seal Material	S316 Stainless Steel
Salt Compatibility	Up to 3.5% (35g/l)
Maximum Water Temperature	50°C
Maximum Installation Height	2m above water level
Ambient Temperature Range	-10°C to 42°C
Maximum Altitude	1000m above sea level
Warranty	5 Years

📐 Dimensions (mm)

Dimension	Measurement
Overall Length	549.5mm
Overall Width	254mm
Overall Height	345mm
Inlet Centre Height	142mm
Packing Dimensions	585 × 255 × 325mm

📈 Performance at Different Speed Settings

Speed Setting	Approximate Flow @ 8m	Power Consumption	Noise Level
100%	27.0 m³/h	1.35 kW	~36 dB
90%	~24 m³/h	~1.0 kW	~34 dB
70%	~19 m³/h	~0.55 kW	~30 dB
50%	~14 m³/h	~0.30 kW	~26 dB
30%	~8 m³/h	~0.15 kW	Whisper quiet

💰 Usage Costs & Running Expenses

The CIV135’s variable speed technology delivers transformational energy savings compared to traditional single-speed pumps. Understanding these savings helps appreciate why inverter pumps represent the smartest long-term investment for any pool owner.

📊 Annual Running Cost Comparison

Key Assumptions:

• UK electricity rate: £0.27 per kWh (Ofgem Price Cap, Q1 2026)
• Pool size: 60m³ (typical UK pool)
• All costs include VAT

🏊 Scenario 1: Year-Round Indoor Pool – Optimised Variable Speed Operation

Running the CIV135 intelligently: low speed for routine filtration, full speed only for backwashing

Parameter	Single-Speed Pump	CIV135 Inverter
Daily filtration hours	12 hours @ 100%	14 hours @ 50% average
Daily backwash/boost	1 hour @ 100%	1 hour @ 100%
Daily power consumption	1.5 kW × 13 hrs = 19.5 kWh	(0.30 × 14) + (1.35 × 1) = 5.55 kWh
Annual consumption	7,118 kWh	2,026 kWh
❌ Annual cost (single-speed)	£1,921.86	–
✅ Annual cost (CIV135)	–	£547.02
💷 Annual Saving	–	£1,374.84

⚡ Energy Reduction: 72% | Cost Saving: £1,374 per year!

♨️ Scenario 2: Seasonal Outdoor Pool (6 Months) – Standard Operation

Typical UK outdoor heated pool, May to October

Parameter	Single-Speed Pump	CIV135 Inverter
Daily operation	10 hours @ 100%	10 hours @ 60% average
Operating days	180 days	180 days
Power per day	1.5 kW × 10 = 15 kWh	0.45 kW × 10 = 4.5 kWh
Seasonal consumption	2,700 kWh	810 kWh
❌ Seasonal cost (single-speed)	£729.00	–
✅ Seasonal cost (CIV135)	–	£218.70
💰 Seasonal Saving	–	£510.30

⚡ Energy Reduction: 70% | Cost Saving: £510 per season!

🏢 Scenario 3: Holiday Let / Commercial – Extended Hours

Rental property or small commercial pool requiring longer daily filtration

Parameter	Single-Speed Pump	CIV135 Inverter
Daily operation	16 hours @ 100%	16 hours @ 50% average
Operating days	365 days	365 days
Power per day	1.5 kW × 16 = 24 kWh	0.30 kW × 16 = 4.8 kWh
Annual consumption	8,760 kWh	1,752 kWh
❌ Annual cost (single-speed)	£2,365.20	–
✅ Annual cost (CIV135)	–	£473.04
💷 Annual Saving	–	£1,892.16

⚡ Energy Reduction: 80% | Cost Saving: Nearly £1,900 per year!

🔊 Noise Level Comparison

Sound Source	Decibel Level
Whisper	20 dB
Quiet bedroom at night	30 dB
✅ Certikin CIV135 (low speed)	~26 dB
✅ Certikin CIV135 (full speed)	36 dB
Refrigerator	40 dB
❌ Traditional single-speed pump	55-65 dB
Washing machine	70 dB

🔇 The CIV135 at full power is quieter than most refrigerators – at low speed, it’s virtually silent!

🎯 Real World Examples & Applications

🏊‍♂️ Medium-Large Residential Pools (50-80m³)

The CIV135 is perfectly sized for substantial family pools where efficient, quiet operation is essential. With 28.5 m³/h maximum flow, a 70m³ pool achieves complete turnover in under 2.5 hours at full speed – or can run economically at 50% speed for extended gentle filtration. Ideal for pools near patios, conservatories, or bedroom windows where traditional pump noise would be intrusive.

Typical installation: In-ground liner or concrete pool 10×5m to 12×6m, plant room within 15m of pool, integration with heat pump and automatic chemical dosing

🏠 Noise-Sensitive Installations

For pools positioned near living spaces, bedrooms, or neighbouring properties, the CIV135’s 36dB operation (quieter at reduced speeds) eliminates complaints and restrictions. Many councils impose noise limits on pool equipment – the CIV135 comfortably meets even the strictest requirements.

Typical installation: Courtyard pool in urban setting, pool adjacent to master bedroom, plant room sharing wall with living accommodation

🌍 Eco-Conscious Pool Owners

If reducing your environmental impact matters, the CIV135 delivers meaningful results. Using 70-90% less electricity than single-speed pumps translates directly to lower carbon emissions. The IE4 super-premium efficiency motor represents the best available technology for sustainable pool operation.

Typical installation: Solar-heated pool with battery storage, eco-lodge or green-certified property, BREEAM-rated commercial development

🏨 Holiday Lets & Rental Properties

For properties where pools must run reliably without owner supervision, the CIV135’s programmable timers and intelligent protection features ensure worry-free operation. The dramatic energy savings directly improve rental property profitability, while the 5-year warranty provides peace of mind for landlords.

Typical installation: Self-catering holiday cottage, Airbnb property with pool, small boutique hotel

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🔄 Upgrade from Single-Speed Pump

Replacing an aging single-speed pump with the CIV135 typically delivers payback within 12-18 months through energy savings alone. The compact dimensions (549.5mm length) fit most existing plant rooms, while standard 2″ connections simplify installation.

Typical installation: Replacing 10-15 year old pump, upgrading to reduce running costs, modernising pool equipment for property sale

🤖 Smart Home & Automation Integration

The CIV135’s external control options (digital inputs, RS485, relay outputs) enable seamless integration with pool automation controllers, building management systems, and smart home platforms. Automate speed changes based on time of day, occupancy sensors, or solar generation.

Typical installation: Whole-home automation system, commercial BMS integration, solar PV optimisation

💡 Cost Savings & Payback Examples

📍 Scenario: Replacing a Traditional 1.5hp Single-Speed Pump

Situation: 10-year-old single-speed pump consuming 1.5kW running 12 hours daily on a year-round pool

Factor	Old Single-Speed	CIV135 Inverter	Difference
Power consumption (filtration)	1.5 kW	0.40 kW (avg)	-73%
Daily runtime	12 hours	12 hours	–
Daily kWh	18 kWh	4.8 kWh	-13.2 kWh
Annual kWh	6,570 kWh	1,752 kWh	-4,818 kWh
❌ Annual cost (old)	£1,773.90	–	–
✅ Annual cost (CIV135)	–	£473.04	–
💰 Annual Saving	–	–	£1,300.86

⏱️ Payback Period: At £825.60 purchase price, energy savings deliver complete ROI in just 7.6 months!

📈 5-Year Total Saving: £1,300.86 × 5 = £6,504.30 – nearly 8× the pump’s purchase price returned through energy savings!

📍 Scenario: New Pool Installation – Inverter vs Single-Speed

Situation: Choosing between CIV135 and equivalent single-speed pump for new 65m³ pool

Factor	Single-Speed Option	CIV135 Inverter
Purchase price	~£500	£825.60
Price difference	–	+£325.60
Annual running cost (seasonal)	£729.00	£218.70
Annual saving	–	£510.30
Payback on price difference	–	7.7 months
5-year total cost (purchase + running)	£4,145	£1,919
💷 5-Year Total Saving	–	£2,226

💡 Verdict: The small additional upfront investment pays for itself in under 8 months, then continues delivering £500+ annual savings for years to come!

📍 Scenario: Comparing CIV135 to Competitor Variable Speed Pumps

Factor	Competitor VS Pump	Certikin CIV135
Purchase price	£1,200 – £1,800	£825.60
Motor efficiency class	IE3	IE4 (superior)
Warranty	2-3 years	5 years
Noise level	40-45 dB	36 dB
Energy savings vs single-speed	70-80%	Up to 90%

🏆 The CIV135 delivers premium performance at a fraction of competitor prices – with better warranty coverage!

📥 Downloads & Resources

Access comprehensive technical documentation for installation planning and ongoing reference:

📄 Installation & Operation Manual – Complete installation guide, electrical wiring instructions, programming guide, troubleshooting, and maintenance procedures

📄 Technical Brochure & Specifications – Product overview, performance curves, dimensional drawings, and energy saving calculations

🏆 Why Choose the Certikin CIV135 Inverter Pump?

✅ Unbeatable Value – Premium variable speed technology at single-speed pump prices; no other inverter pump offers this combination of features and affordability

✅ Proven Energy Savings – Up to 90% reduction in electricity consumption delivers payback typically within 8-12 months, then continues saving £500-£1,500+ annually

✅ Whisper-Quiet Operation – At 36dB (quieter at low speeds), eliminates noise complaints and enables installations where traditional pumps would be unacceptable

✅ Superior IE4 Motor – Permanent Magnet Synchronous Motor technology provides better efficiency than standard inverter pumps using IE3 motors

✅ Industry-Leading 5-Year Warranty – Exceptional manufacturer backing demonstrates confidence in build quality and provides long-term peace of mind

✅ Smart, Simple Controls – Intuitive interface with 4 programmable timers, real-time power monitoring, and one-click backwash makes daily operation effortless

🛍️ Why Buy From Parts4Tubs?

🤝 Personal Service from a Real Expert – Parts4Tubs is run by Andi, a genuine pool and hot tub enthusiast who built his own hot tub and understands exactly what you need. You’re buying from a person, not a faceless corporation

📦 Prompt UK Dispatch – Stock items shipped quickly from our Northamptonshire warehouse with full tracking, so you know when to expect delivery

🔧 Genuine Technical Support – Real help from someone who knows pool equipment inside out; questions about installation, compatibility, or operation get proper answers, not call centre scripts

💳 Secure Payment Options – Pay confidently via PayPal, Stripe, all major credit/debit cards, Apple Pay, and Google Pay

↩️ Straightforward Returns – Clear, fair returns policy if something isn’t right for your application

✨ Summary

The Certikin CIV135 Inverter Pool Pump represents a genuine breakthrough in pool circulation technology – delivering premium variable speed performance, whisper-quiet operation, and transformational energy savings at a price point that makes it accessible to every pool owner. With its advanced InverSilence technology, IE4 super-premium efficiency motor, and intelligent digital controls, this pump slashes electricity bills by up to 90% while operating quieter than a household refrigerator.

Whether you’re replacing an aging single-speed pump, specifying equipment for a new build, or upgrading to reduce running costs on a rental property, the CIV135 delivers exceptional value backed by Certikin’s industry-leading 5-year warranty. The payback period of typically 8-12 months means this pump essentially pays for itself, then continues delivering £500-£1,500+ in annual savings for years to come.

Stop paying to power an outdated single-speed pump. Make the smart switch to the Certikin CIV135 – where cutting-edge technology meets unbeatable value for the ultimate in efficient, quiet pool circulation.