Vaillant ecoFIT Sustain 618 (ErP) System Boiler Only

Vaillant ecoFIT Sustain 618 (ErP) System Boiler

The Vaillant ecoFIT Sustain 618 system boiler is a compact and efficient heating solution designed to work alongside a separate hot water cylinder. As one of the most compact system boilers developed by Vaillant, it is ideal for installations where space is limited, such as kitchen cupboards, airing cupboards, or utility rooms. Designed for both installers and homeowners, the ecoFIT Sustain 618 offers flexible siting and straightforward installation thanks to its compact size and lightweight design. The boiler also includes a high-efficiency pump to help reduce energy consumption while still delivering reliable and consistent heating performance. This system boiler is suitable for modern sealed heating systems and does not require a cold water tank in the loft, making it a practical and space-saving option for many homes.

Key Features & Benefits

Compact and Lightweight Design Ideal for Installation in Cupboards or Small Spaces System Boiler – Works with a Hot Water Cylinder No Cold Water Tank Required Easy Installation and Flexible Siting High Efficiency Pump for Reduced Energy Consumption Reliable Heating Performance A Rated for Heating Efficiency 2 Year Warranty (Subject to Manufacturer’s T&Cs)

Key Specifications

Product: Vaillant ecoFIT Sustain 618 (ErP) System Boiler GTIN: 4024074850367 Product Type: Gas System Boiler Model: ecoFIT Sustain Central Heating Output: 18kW (61,000 BTU) ErP Heating Rating: A Rated Gross Weight (Including Packaging): 33kg Net Weight: 32kg Height: 700mm Width: 390mm Depth: 295mm Warranty: 2 Years (Subject to Manufacturer’s T&Cs)

What Is a System Boiler?

A system boiler provides heating directly to radiators and works with a separate hot water cylinder to store hot water. Unlike heat-only boilers, system boilers do not require a cold water tank in the loft, making them suitable for sealed heating systems and homes where loft space is limited.

FAQs

What is the difference between a system boiler and a combi boiler?

A system boiler works with a hot water cylinder, while a combi boiler heats water on demand and does not require a cylinder.

Is an 18kW system boiler suitable for a medium-sized home?

Yes, an 18kW system boiler is typically suitable for medium-sized homes depending on insulation and heating demand.

Can this boiler replace an older system boiler?

Yes, the ecoFIT Sustain 618 is a suitable replacement for older system boilers and can improve efficiency and performance.