Vaillant Ecotech 940 Storage Combi with Horizontal Flue & 15mm Scale Reducer

The Vaillant ecoTEC Plus 940 Combi Boiler is Vaillant's flagship 40kW high-flow combination boiler, designed to deliver exceptional central heating performance and outstanding mains-pressure hot water for larger homes with multiple bathrooms. Unlike a standard combi boiler, the ecoTEC Plus 940 incorporates ActoSTOR® loading technology, providing stored hot water performance while maintaining the convenience of a combi system without the need for a separate hot water cylinder.

Ideal for larger family homes, the ecoTEC Plus 940 combines intelligent combustion technology, premium energy efficiency, and advanced smart heating compatibility. With an impressive domestic hot water flow rate of up to 21 litres per minute, it is designed to comfortably supply multiple outlets simultaneously while helping reduce energy consumption.

Key Features

• 40kW High-Flow Combination (Combi) Gas Boiler
• Fuel Type: Natural Gas
• Integrated ActoSTOR® hot water storage technology
• Instant mains-pressure hot water
• No separate hot water cylinder required
• ErP A Rated for heating and hot water
• High-efficiency condensing technology
• Intuitive semi-touch user interface
• IoniDETECT intelligent combustion technology
• Up to 1:9 modulation ratio
• Domestic hot water flow rate: 21.0 L/min (Δ30°C)
• Domestic hot water flow rate: 18.0 L/min (Δ35°C)
• Hydrogen Blend Ready (up to 20%)
• Stainless steel heat exchanger
• Smart home ready with myVAILLANT connect
• Compatible with Vaillant heating controls
• Standard 5-year manufacturer's warranty
• Extendable to 10 years when installed by a Vaillant Advance Installer (subject to terms and conditions).

Ideal for Large Homes with High Hot Water Demand

The ecoTEC Plus 940 is specifically designed for large homes with multiple bathrooms where high volumes of hot water may be required at the same time.

Its unique ActoSTOR® loading technology stores heated water internally, allowing the boiler to deliver significantly higher hot water performance than a conventional combi boiler while eliminating the need for an external hot water cylinder.

Outstanding Heating & Hot Water Performance

Delivering 40kW of heating output together with an exceptional 21.0 litres per minute domestic hot water flow rate (Δ30°C), the ecoTEC Plus 940 provides enough capacity for busy households where multiple showers or taps may be used simultaneously.

Vaillant's advanced IoniDETECT intelligent combustion system continuously adjusts burner performance according to gas quality, ensuring optimum efficiency and reliable comfort. Combined with a 1:9 modulation ratio, the boiler minimises fuel consumption while maintaining excellent performance.

Compact Design & Easy Installation

Despite incorporating integrated hot water storage technology, the ecoTEC Plus 940 remains compact enough for straightforward installation.

Dimensions

• Height: 720mm
• Width: 440mm
• Depth: 580mm

Its installer-friendly design provides excellent access for servicing while maintaining Vaillant's high standards for reliability and ease of maintenance.

Advanced Energy Efficiency

The ecoTEC Plus 940 combines advanced condensing technology with intelligent combustion management to maximise seasonal efficiency and reduce energy costs.

The boiler is also Hydrogen Blend Ready, allowing operation with gas supplies containing up to 20% hydrogen, helping future-proof your heating system as the UK's gas infrastructure evolves.

Smart Heating Control Compatibility

Compatible with myVAILLANT connect and Vaillant's latest range of smart controls, the ecoTEC Plus 940 allows homeowners to manage heating remotely using a smartphone.

Its intelligent modulation and weather compensation capabilities help maximise comfort while reducing energy usage throughout the year.

Reliable Performance & Easy Maintenance

The ecoTEC Plus 940 features a durable stainless steel heat exchanger, intelligent linBUS communication technology, and a redesigned internal layout that simplifies installation and servicing.

Its guided commissioning process helps installers complete setup quickly while ensuring reliable long-term operation.

Warranty & Peace of Mind

The Vaillant ecoTEC Plus 940 includes a 5-year manufacturer's warranty as standard. When installed and registered by a Vaillant Advance Installer, the warranty can be extended to 10 years, providing additional confidence and long-term protection.

Why Choose the Vaillant ecoTEC Plus 940?

• Premium 40kW high-flow combi boiler
• Integrated ActoSTOR® hot water storage technology
• Outstanding 21.0 L/min hot water flow rate
• Ideal for larger homes with multiple bathrooms
• IoniDETECT intelligent combustion technology
• Hydrogen Blend Ready (20%)
• Smart home compatible
• Stainless steel heat exchanger
• No separate hot water cylinder required
• Up to 10-year warranty available