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MPN: 7733600378

Worcester Greenstar 4000 12KW LPG System Boiler

Worcester Greenstar 4000 12KW LPG System Boiler


Regular price £1,321.86 Excl. VAT
£1,586.23 Incl. VAT
Sale price £1,321.86 Excl. VAT
£1,586.23 Incl. VAT
Regular price
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Key Information

  • - Product type: System boiler.
  • - Brand: Worcester Bosch.
  • - Fuel type: LPG.
  • - Output: 12 kW.
  • - Dimensions: 310 mm.

Product Information

Worcester Greenstar 4000 12kW LPG System Boiler

The Worcester Greenstar 4000 12KW 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 12kW LPG System Boiler is a reliable, efficient heating solution designed for homes that use a stored hot water cylinder. It's ideal for medium-sized properties and for households that need consistent hot water performance throughout the day. Compact, lightweight, and thoughtfully engineered, this boiler is easy to install in a wide range of locations. Its built-in pump and expansion vessel help streamline installation, while optional plug-in controls allow homeowners to customise how their heating system operates for added comfort and reduced energy use. As an LPG model, it's a great choice for properties not connected to mains gas, including rural homes or holiday lodges. Optional diverter valves and smart controls make it flexible enough to match different heating setups and user preferences.

Key Features

  • LPG model ideal for off-grid properties
  • Compact, space-saving design for easy installation
  • Built-in pump and expansion vessel
  • Optional diverter valve for flexible system layouts
  • Wide choice of heating controls for improved comfort and efficiency

Technical Specifications

  • Manufacturer: Worcester Bosch
  • Model: 4000
  • MPN: 7733600378
  • SKU: 79141
  • GTIN: 4057749856678
  • Performance:
  • CH Output: 12kW
  • CH Output (BTU): 40,000
  • Heating Efficiency: A-Rated
  • Dimensions:
  • Height: 724mm
  • Width: 400mm
  • Depth: 310mm
  • Weight:
  • Gross (with packaging): 33.2kg
  • Warranty:
  • 7 Years (subject to manufacturer T&Cs)

FAQs

Is the 12kW model suitable for larger homes?

The 12kW output is best for small to medium-sized homes with moderate heating requirements. Larger homes may need a higher-output model.

Do I need a hot water cylinder with this boiler?

Yes. As a system boiler , it works alongside a stored hot water cylinder to supply hot water efficiently.

Can this boiler be paired with smart heating controls?

Absolutely. The Greenstar 4000 range works with a variety of optional Worcester controls and smart thermostats to optimise comfort and energy savings.

Check out our full range of plumbing supplies.

Browse more boilers available online.

Why Choose Us

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.

Delivery

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.

Documentation

Worcester Greenstar 4000 12KW LPG System Boiler

£1,321.86

Can I collect this product from a local branch?

Absolutely. Check availability at your nearest branch during checkout or contact us directly.

Do you offer bulk pricing or trade discounts?

Yes, we offer competitive rates for trade customers and bulk orders. Contact our team for a tailored quote.

What if the product arrives damaged?

Please notify us within 48 hours of delivery. We’ll arrange a prompt replacement or refund as needed.

How fast is the delivery time?

Most items are delivered within 2–5 working days, depending on stock and location. Some products may take longer times.

What is the Return Policy?

We accept most returns within 14 days of delivery, provided the items are unused, in their original packaging, and in resalable condition. Please contact our customer service team to arrange a return or discuss any concerns.