Vaillant Ecotech 615 System Boiler with Horizontal Flue & 15mm Scale Reducer

The Vaillant ecoTEC Plus 615 System Boiler is a premium 15kW system gas boiler designed to deliver efficient, reliable heating and hot water for modern sealed heating systems. Featuring Vaillant's latest condensing technology, an intuitive semi-touch interface, and intelligent combustion control, it provides exceptional performance while helping reduce energy consumption and running costs.

Perfect for homes with a separate unvented hot water cylinder, the ecoTEC Plus 615 combines compact dimensions with advanced smart technology, making it an ideal replacement for older system boilers or a dependable choice for new heating installations.

Key Features

• 15kW system gas boiler
• Fuel Type: Natural Gas
• High-efficiency condensing technology
• ErP A Rated heating efficiency
• Designed for sealed heating systems with an unvented hot water cylinder
• New intuitive semi-touch user interface
• IoniDETECT intelligent combustion technology
• Up to 1:10 modulation ratio for improved efficiency
• Automatic LPG conversion (no additional conversion kit required)
• Hydrogen blend ready (up to 20%)
• Smart home ready with myVAILLANT connect
• Compatible with most Vaillant heating controls and accessories
• Easy-access internal components for faster installation and servicing
• Standard 5-year manufacturer's warranty
• Extendable to 10 years when installed by a Vaillant Advance Installer (subject to terms and conditions)

Ideal for Sealed Heating Systems

The ecoTEC Plus 615 is designed for sealed central heating systems that use a separate unvented hot water cylinder. Unlike a combi boiler, it stores hot water in a cylinder, making it ideal for homes where multiple bathrooms may be used at the same time.

Its built-in pump and expansion vessel simplify installation while delivering reliable heating and hot water performance throughout the property.

Efficient 15kW Heating Performance

With a 15kW central heating output, the ecoTEC Plus 615 is ideal for apartments and small to medium-sized homes with moderate heating requirements.

Thanks to Vaillant's IoniDETECT combustion technology and a 1:10 modulation ratio, the boiler continuously adapts its burner output to match heating demand, helping to maximise efficiency while reducing gas consumption and unnecessary cycling.

Compact Design & Easy Installation

The ecoTEC Plus 615 retains Vaillant's familiar installation footprint, making it an excellent replacement for older ecoTEC models without requiring major pipework modifications.

Dimensions

• Height: 720mm
• Width: 440mm
• Depth: 352mm

Its redesigned internal layout provides easy access to key components, helping installers complete servicing and maintenance more efficiently.

Advanced Energy Efficiency

The ecoTEC Plus 615 is engineered to maximise heating efficiency through intelligent combustion management and wide burner modulation.

The boiler is also Hydrogen Blend Ready, allowing it to operate safely with gas supplies containing up to 20% hydrogen, helping future-proof your home's heating system as energy networks evolve.

Smart Heating Control Compatibility

The ecoTEC Plus 615 is compatible with Vaillant's latest range of smart heating controls and accessories, including myVAILLANT connect, allowing homeowners to control their heating remotely through compatible smart devices.

It also integrates seamlessly with Vaillant renewable technologies and hybrid heating systems for greater flexibility and long-term efficiency.

Reliable Performance & Easy Maintenance

Designed for dependable everyday operation, the ecoTEC Plus 615 features Vaillant's new linBUS technology, enabling more accurate monitoring of system flow rates and pump performance. Combined with an improved internal layout and guided commissioning wizard, installation and servicing are quicker and more straightforward than ever before.

Warranty & Peace of Mind

The Vaillant ecoTEC Plus 615 includes a 5-year manufacturer's warranty as standard. When installed and registered by an eligible Vaillant Advance Installer, the warranty can be extended to 10 years, providing additional confidence and long-term protection.

Why Choose the Vaillant ecoTEC Plus 615?

• Efficient 15kW system gas boiler
• Ideal for sealed heating systems with a hot water cylinder
• Latest IoniDETECT intelligent combustion technology
• Up to 1:10 burner modulation for greater efficiency
• Automatic LPG conversion
• Hydrogen blend ready (20%)
• Smart home compatible
• Compact design with simplified installation
• Easy servicing with redesigned internal layout
• Up to 10-year warranty available when installed by a Vaillant Advance Installer