The Vaillant ecoFIT Pure 618 System Boiler (0010020397) is a compact, high-efficiency heating solution designed for medium-sized homes with consistent central heating requirements. Delivering an 18kW output and an ErP A-rated efficiency classification, this natural gas system boiler combines reliable heating performance with a space-conscious design.
Designed to work with a compatible hot water cylinder, the Vaillant ecoFIT Pure 618 supports stored hot water for households where several taps or showers may be used at the same time. Its 1:4.9 modulation ratio helps adjust heat output to demand, while its compact, lightweight construction makes it suitable for installations where space is limited.
With rear, horizontal and vertical flue options available across the range, the ecoFIT Pure offers installation flexibility for suitable replacement and new heating systems. For homeowners looking for a dependable Vaillant system boiler, the ecoFIT Pure 618 combines practical design with efficient central heating performance.
18kW Output ErP A-Rated Natural Gas 1:4.9 Modulation System Boiler
Vaillant ecoFIT Pure 618 at a Glance
About the Vaillant ecoFIT Pure 618 System Boiler
A system boiler heats water for your central heating system and works with a separate hot water cylinder to provide stored domestic hot water. Unlike a combi boiler, which heats hot water on demand, a system boiler can support hot water delivery from a suitably sized cylinder, helping meet the needs of households using multiple outlets.
The Vaillant ecoFIT Pure 618 incorporates a built-in pump and expansion vessel, helping reduce the need for certain external system components. Its compact design is intended to make installation easier where space is restricted, although the final installation location must meet the manufacturer's clearance and servicing requirements.
Key Features of the Vaillant ecoFIT Pure 618
1. Reliable 18kW Heating Output
Designed to provide central heating for suitable medium-sized properties. A heating engineer should assess the property's heat loss to confirm the correct boiler size.
2. ErP A-Rated Efficiency
The A-rated efficiency classification supports efficient home heating. Actual energy use and running costs depend on system design, controls, insulation and household usage.
3. Intelligent 1:4.9 Modulation
The modulation ratio allows the boiler to vary its heat output to better match demand, helping avoid unnecessary output when the full heating capacity is not required.
4. Compact, Lightweight Design
Its space-conscious construction can suit installations where available wall or cupboard space is limited. Confirm dimensions and required clearances before installation.
5. Flexible Flue Options
Rear, horizontal and vertical flue options are available within the ecoFIT Pure range. The correct flue arrangement and compatible components must be selected for the specific installation.
6. Extended Warranty Options
Warranty cover of up to 10 years may be available when the specified Vaillant Boiler Protection Kit and eligible Vaillant Advance Engineer installation requirements are met, subject to the manufacturer's terms.
Important installation information
Boiler installation, gas connections, flue selection and commissioning must be completed by a suitably qualified and registered heating professional. Confirm system compatibility, ventilation, flue requirements and manufacturer clearances before purchasing.
Vaillant ecoFIT Pure 618 Product Specifications
For detailed technical information, refer to the Vaillant ecoFIT Pure data sheet.
| Specification |
Details |
| Product Name |
Vaillant ecoFIT Pure 618 System Boiler |
| Product Code |
0010020397 |
| EAN / Barcode |
4024074778975 |
| Brand |
Vaillant |
| Boiler Type |
System Boiler |
| Rated Output |
18kW |
| Fuel Type |
Natural Gas |
| ErP Efficiency Class |
A-rated, as supplied |
| Modulation Ratio |
1:4.9 |
| Hot Water Cylinder |
Required; compatible cylinder to be selected for the system |
| Pump and Expansion Vessel |
Built-in, as supplied |
| Noise Level |
Described as ultra-quiet; verify the certified sound data in the manufacturer's documentation |
| Flow Temperature |
Adjustable; confirm the precise range in the manufacturer's data sheet |
| Mounting |
Wall-mounted, subject to installation requirements |
| Flue Options |
Rear, horizontal and vertical options within the range; confirm compatibility for this model |
| Installation Suitability |
Suitable retrofit or new installation, subject to professional assessment |
| Warranty |
Up to 10 years under qualifying conditions; subject to Vaillant's current warranty terms |
Who Is the Vaillant ecoFIT Pure 618 Suitable For?
- Homeowners looking for an efficient system boiler for central heating.
- Properties with a compatible hot water cylinder already installed or planned.
- Households seeking a compact boiler design for space-conscious installations.
- Customers replacing an existing system boiler, subject to a heating engineer's compatibility assessment.
- Homeowners looking for a Vaillant boiler with potential extended warranty options.
Frequently Asked Questions
1. Is the Vaillant ecoFIT Pure 618 a combi boiler?
No. The ecoFIT Pure 618 is a system boiler. It provides central heating and works with a separate hot water cylinder to supply domestic hot water.
2. Does the ecoFIT Pure 618 require a hot water cylinder?
Yes. A system boiler works with a compatible hot water cylinder. The cylinder's capacity and recovery performance should be selected according to household demand and system design.
3. What is the output of the Vaillant ecoFIT Pure 618?
The supplied product information lists an 18kW output. A qualified heating engineer can determine whether this output is suitable for your property's heating requirements.
4. Is the Vaillant ecoFIT Pure 618 energy efficient?
The supplied information lists an ErP A-rated efficiency classification. Actual energy consumption depends on the installation, heating controls, insulation and how the system is used.
5. Can the ecoFIT Pure 618 fit inside a kitchen cupboard?
Its compact design may suit some space-conscious installations, but suitability depends on the available dimensions, required clearances and servicing access. Check the manufacturer's installation instructions before choosing a location.
6. What warranty is available with this boiler?
The supplied information states that cover of up to 10 years may be available when the required Vaillant Boiler Protection Kit and installation conditions are met. Confirm eligibility, registration requirements and current terms with Vaillant before purchase.
7. Who should install the Vaillant ecoFIT Pure 618?
Installation and commissioning should be carried out by a suitably qualified and registered heating professional who can verify gas supply, flue arrangements and compatibility with the existing heating system.
Shop the Vaillant ecoFIT Pure 618 at GetPlumb
Choose the Vaillant ecoFIT Pure 618 18kW System Boiler for compact design, efficient central heating and compatibility with a suitable stored hot water system. Review the manufacturer's technical documentation and confirm suitability with your installer before ordering.
Order online from GetPlumb for your plumbing and heating project, with delivery or collection options available according to current store arrangements.
