Worcester Greenstar 4000 18KW LPG System Boiler

Worcester Greenstar 4000 18kW LPG System Boiler

The Worcester Greenstar 4000 18KW LPG System Boiler is a practical choice for customers comparing system boilers, offering dependable heating performance for off-grid homes using LPG. If you are reviewing system boiler prices, this Worcester Bosch model gives you a clear option to compare by output, fuel type, controls and installation requirements before choosing the right boiler for your property. The Worcester Greenstar 4000 18kW LPG System Boiler is a dependable and efficient choice for medium to large-sized homes, especially those using LPG instead of mains gas. Designed to work with a stored hot water cylinder, it delivers reliable heating and hot water performance throughout the property. Thanks to its compact and lightweight build, this boiler is easy to install in a wide range of locations. It also includes useful built-in components such as a pump and expansion vessel, helping streamline installation. With support for a variety of optional heating controls, homeowners can tailor their system for maximum comfort and energy efficiency.

Key Features

• LPG model, ideal for properties without access to mains gas
• Compact, space-saving dimensions for flexible installation
• Built-in pump and expansion vessel to simplify setup
• Compatible with an optional plug-in diverter valve
• Works with a wide range of optional heating controls

Technical Specifications

• Manufacturer: Worcester Bosch
• Model: 4000
• MPN: 7733600382
• SKU: 79145
• GTIN: 4057749856715
• Performance:
• Boiler CH Output: 18kW
• CH Output (BTU): 61,000
• ErP Rating: A Rated for Heating
• Dimensions:
• Height: 724mm
• Width: 400mm
• Depth: 310mm
• Weight:
• Gross Weight: 33.2kg
• Warranty:
• 7 Years (Subject to manufacturer's T&Cs)

FAQs

Is the 18kW LPG model suitable for larger homes?

Yes. The 18kW output makes it a strong choice for medium to larger homes , especially those with multiple radiators and a stored hot water cylinder.

Do I need a hot water cylinder with this boiler?

Yes - as a system boiler , it requires a stored hot water cylinder, but does not need a separate feed tank like a traditional boiler.

Can this boiler work with smart thermostats?

Yes. The Greenstar 4000 range supports a variety of smart and traditional controls , helping you boost comfort and reduce energy use.

Check out our full range of plumbing supplies.

Browse more boilers available online.

At JJ Building Materials, we're committed to supplying quality building products at competitive prices, backed by the service and expertise you'd expect from an established independent merchant. Whether you're a trade professional managing large-scale projects or a homeowner taking on a DIY renovation, we're here to help you find the right products for the job.

As part of the JJ Roofing Supplies Group, we build on decades of experience supplying construction materials across the UK. We've expanded beyond roofing to offer a growing range of building materials, including timber, insulation, landscaping products, plumbing supplies, flooring, doors, bricks, fencing, garden buildings and much more – all available to order online with nationwide delivery.

We work with many of the industry's leading manufacturers to bring you trusted products that meet the highest standards of quality and performance. Our team is passionate about providing excellent customer service, competitive pricing and a straightforward shopping experience from start to finish.

When you shop with JJ Building Materials, you can expect:

• Competitive prices on leading brands and quality products.
• Nationwide delivery across the UK
  
• A constantly expanding range of building and landscaping materials.
  
• Friendly, knowledgeable customer support.
  
• A trusted business backed by the JJ Roofing Supplies Group.
  

Every order is personally reviewed by our experienced team to ensure everything is correct before dispatch. We offer delivery from as little as the next working day on selected products, so please refer to the dark blue Estimated Delivery box above for the expected delivery timeframe for this item.

We work with trusted manufacturers and specialist delivery partners to ensure your order arrives safely and on time. You'll receive tracking details once your order has been dispatched, and if we need to confirm any delivery details, one of our team will contact you directly to keep everything running smoothly.

Roof Tiles & Fittings:

We recommend ordering an additional 10% of roof tiles to allow for any breakages that may occur during delivery or handling. Roof tiles are naturally fragile, and having a few extra on site helps prevent delays and ensures your roofing project can be completed without interruption.