618 18kW System Gas Boiler

Overview of Baxi 618 18kW System Gas Boiler

The Baxi 618 18kW System Gas Boiler is a highly efficient and compact heating solution designed for homes that require reliable and consistent hot water and central heating. Manufactured by one of the UK’s leading boiler brands, Baxi, this system boiler offers a combination of innovation, energy efficiency, and ease of installation.

Built with energy-conscious homeowners in mind, the Baxi 618 is part of the Baxi 600 range and is ideal for medium-sized properties with moderate heating demands. As a system boiler, it works alongside a separate hot water cylinder, making it perfect for homes with more than one bathroom and a higher demand for hot water.

Whether you’re replacing an old system boiler or upgrading to a more modern heating unit, the Baxi 618 offers the performance and peace of mind you need from your home heating system.

Baxi 618 18kW System Gas Boiler Key Features

1. Compact and Lightweight Design

The Baxi 618 is designed to fit neatly into a standard kitchen cupboard, making it a great option for properties where space is at a premium. Weighing just 26kg, it’s easy to handle and install, saving time and labour costs.

2. ErP A-Rated Efficiency

With an impressive ErP A rating for both heating and hot water efficiency, the Baxi 618 helps reduce energy bills while minimising your home’s carbon footprint. It’s designed to operate efficiently, offering both performance and sustainability.

3. User-Friendly Controls

The intuitive LCD display and easy-to-use controls make it simple to adjust settings and monitor system performance. Homeowners can conveniently manage their heating preferences without the need for technical expertise.

4. Compatibility with Smart Thermostats

The Baxi 618 is compatible with a range of smart thermostats, including Baxi uSense and other third-party smart controls. This enables homeowners to fine-tune their heating schedules, track energy usage, and even control the boiler remotely via smartphone apps.

5. Quiet Mark Accreditation

Thanks to its low operating noise, the Baxi 618 has received Quiet Mark approval. This makes it an excellent choice for installation in or near living spaces where noise levels matter.

Is Baxi 618 18kW System Gas Boiler Suitable for My Home?

The Baxi 618 is best suited for small to medium-sized homes that have moderate heating and hot water needs. If your property has one to two bathrooms and a separate hot water storage cylinder, this system boiler is a perfect match.

System boilers like the Baxi 618 are particularly beneficial for households that use a lot of hot water at the same time in multiple rooms, as they provide a constant and high-pressure water supply without relying on a water tank in the loft.

Before installation, it’s essential to have a Gas Safe registered engineer assess your home’s heating demands to ensure the Baxi 618 meets your specific requirements.

Size

Measuring just 700mm (H) x 390mm (W) x 285mm (D), the Baxi 618 is compact enough to fit inside a standard kitchen cupboard. Its small footprint makes it an attractive option for homeowners who need an unobtrusive and space-saving heating solution.

Baxi 618 18kW System Gas Boiler Range of Models

The Baxi 600 system boiler range includes several models designed to cater to varying heating demands. Each model shares the same compact design and high-efficiency performance but differs in output.

Model	Price
Baxi 818 18kW System Gas Boiler	£1,713 – £2,213
Baxi 824 24kW System Gas Boiler	£1,757 – £2,257

Baxi 618 18kW System Gas Boiler Warranty Period

The Baxi 618 comes with a standard 7-year parts and labour warranty for complete peace of mind. This warranty is subject to registration and annual servicing by a Gas Safe registered engineer. The generous warranty period reflects Baxi’s confidence in the quality and durability of its products.

Baxi 618 18kW System Gas Boiler Installation and Maintenance

Installation of the Baxi 618 must be carried out by a qualified Gas Safe registered engineer. Its lightweight construction and compact size make installation straightforward and efficient, reducing labour time and associated costs.

Regular maintenance is essential to keep the boiler operating at peak efficiency. Annual servicing ensures the boiler remains safe, efficient, and within the warranty terms. Servicing includes safety checks, performance inspections, and cleaning of essential components.

Benefits of Choosing Baxi 618 18kW System Gas Boiler

• Trusted Brand: Baxi is one of the UK’s most respected boiler manufacturers, known for quality and reliability.
• Energy Efficiency: Lower your heating bills with an ErP A-rated boiler.
• Compact Footprint: Ideal for properties with limited space.
• Quiet Operation: Enjoy peace and quiet with Quiet Mark accreditation.
• Flexible Control: Compatible with smart controls for remote management and energy tracking.
• Easy Installation: Lightweight design makes the installation process smoother and quicker.

Get an Instant Quote for Baxi 618 18kW System Gas Boiler Today

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FAQs

What size system boiler do I need for a 3-bedroom house?

A 3-bedroom house typically requires a system boiler with an output of 18kW to 24kW, depending on hot water demand. The Baxi 618 is ideal for homes with moderate usage.

Is a system boiler better than a combi boiler?

System boilers are better for homes with higher hot water demand and multiple bathrooms, while combi boilers are more suitable for smaller properties with lower demand.

How long do Baxi boilers last?

With regular maintenance, Baxi boilers can last 10–15 years or more. The 7-year warranty provides added assurance of long-term performance.

Can a Baxi boiler be controlled with a smart thermostat?

Yes, the Baxi 618 is compatible with various smart thermostats, including Baxi’s own uSense system and other third-party brands.

What does Quiet Mark mean?

Quiet Mark is an independent award for products that operate at low noise levels. The Baxi 618 has earned this certification for its quiet performance.