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Worcester Bosch 4000 30kW Combi Boiler Installed by British Gas

£3,249.99

(9 customer reviews)

In stock

Upgrade to the high-performance, A-rated Worcester Bosch Greenstar 4000 30kW Combi Boiler, expertly installed by British Gas. Ideal for medium to large homes, this energy-efficient natural gas boiler delivers powerful central heating and an exceptional hot water flow rate for superior comfort and lower running costs.

  • Powerful 30kW output perfect for multiple bathrooms.
  • A-rated energy efficiency (up to 94%) for reduced energy bills.
  • High domestic hot water flow rate of 12.3 litres per minute.
  • Professional installation by British Gas for guaranteed quality and peace of mind.

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  • Manufacture Warranty 1 Year
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Product Description

Product Overview

Upgrade your home heating system with the high-performance Worcester Bosch Greenstar 4000 30kW Combi Boiler, professionally installed by British Gas. This A-rated, energy-efficient boiler is designed for medium to large homes with multiple bathrooms, delivering reliable central heating and an impressive hot water flow rate of up to 12.3 litres per minute. Known for its modern, stylish design and quiet operation, the Greenstar 4000 replaces older models seamlessly. Enjoy superior comfort, lower energy bills, and total peace of mind knowing your installation is handled by a trusted provider like British Gas.

Key Features

  • Powerful 30kW Output: Perfect for homes demanding high heating and hot water performance.
  • Superior Efficiency: A-rated for energy efficiency (up to 94%), helping to significantly reduce running costs.
  • Guaranteed Quality: Benefit from a long manufacturer’s warranty for complete security and peace of mind.
  • Compact and Modern Design: Features contemporary aesthetics and quiet operation, fitting neatly into modern interiors.
  • High Hot Water Flow: Provides an excellent domestic hot water flow rate of up to 12.3 l/m.

Important Information

  • Dimensions: H 724mm x W 400mm x D 310mm.
  • Fuel Type: Natural Gas.
  • Installation by British Gas ensures certified, professional setup.
  • Compatible with smart thermostat controls (e.g., EasyControl) for remote management.

Why Choose Think Assemble

  • Quality Assurance: Every boiler installation meets the highest industry standards for safety and performance.
  • Expert Installation: Our partnerships ensure only certified, experienced engineers handle your install.
  • Comprehensive Support: Dedicated customer service available to assist you from purchase through post-installation.
  • Transparent Pricing: Clear, upfront costs with no hidden fees for the boiler and professional installation package.

Specification

Overview

ColourWhite
Brand
DimensionsL 40 x W 31 x H 72.4cm
ManufacturerWorcester Bosch
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9 reviews for Worcester Bosch 4000 30kW Combi Boiler Installed by British Gas

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  1. Dr H D

    Excellent boiler deal
    Very good value high-end boiler and installation, beating British Gas’ own price by almost £2k. Was concerned that there would be extra add on charges, but there weren’t.
    Mine was a straightforward switch for a combi to a combi in the same place, and I suspect that if there had been additional pipework or brickwork for flue etc that it would not have been possible to get prices or questions answered in advance of committing to a purchase. Worked really well for me and offer came at the right time.

  2. KEVIN 1986

    BOILER HOT, CUSTOMER SERVICE COLD
    BOILER SEEMS GOOD BUT REST WASNT FUN AT ALL, THE PRICE AGREED WASN’T WHAT IT COULD BE INSTALLED FOR SO IT ENDED UP COSTING ME AN EXTRA £1000 ON TOP. THE TRIMEFRAME OF 2 WEEKS WAS ALSO OPTIMISTIC AS TOOK ALMOST 30 DAYS

  3. Lucy Gu

    Good value for money
    After comparing options on the market and getting a few quotes, I found that thinkassemble.co.uk’s boiler deal was the best, so I went ahead with it. The installation went smoothly, and I paid a few extra hundred pounds for additional parts and a power flush of my heating system. I’m very pleased with the overall outcome and am now enjoying my new boiler. I would definitely recommend it to anyone looking to replace their combi heating system.

  4. Jose Cornejo

    Best service
    Thorough and proper installation. Left work area tidy and better than it was. Safeguards are well documented and explained. We appreciate this level of excellence.

  5. B carr

    Excellent service
    Excellent service from British Gas from the start to the finish totally recommend them thanks

  6. Ali T 2021

    Great new boiler
    Nice bit of kit…..works well replaced a 15 yr old model

  7. Susanw

    Worcester boiler
    Excellent boiler. Great quality and service provided by British Gas

  8. Markthelma

    Boiler
    Great value and installed in 2 and a half weeks.
    Highly recommended.

  9. tanj666

    Don’t waste your time with British Gas
    The boiler is very good. The installation is actually very good, the engineer we had was great.
    However British Gas themselves were useless. They don’t actually sell enough through thinkassemble.co.uk to understand how the whole thing works.
    Whatever you do – DO NOT ORDER REPLACEMENT RADIATORS. BG have no conception of how this works with the purchase of the boiler via thinkassemble.co.uk.
    You will get horrendous lead times. You will suffer an ordering anf fulfilment process that a five year old could improve upon. BG will take the order. Then pass that order to a third party who will throw whatever they want into a box and pay little heed to the items on order. If you’re lucky you may get a few of the radiators you wanted/needed. BG do a survey based on a video call, not an actual site visit so you need to measure everything beforehand for this to work, but they won’t tell you. Then BG will charge you nearly £800 for scaffolding that isn’t really needed. In all the process took over 6 weeks and still isn’t right

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