Image of Worcester 4000 24kw system boiler
Worcester Bosch Boilers

Worcester 4000 24kw system boiler

All prices are fully fitted and include VAT

*Please note that all prices are subject to survey

£2600

inc vat

£97.50

/mo 24 months
(0% apr)

Boiler Specs

Warranty 10 year manufacturer's warranty
Boiler Type System
Efficiency 94%/A
Max Output 24kw
Flow Rate N/A
Dimensions W 400mm, D 310mm, H 724mm
Horizontal Maximum Flue Length 12m
Vertical Maximum Flue Length 12m

Boiler Description

The Worcester Greenstar 4000 24kW system boiler is ideal for medium to larger sized homes, especially when paired with a heating system that has a hot water tank.

This boiler powers up to 14 radiators and a medium sized hot water tank.

Part of the the Worcester Greenstar range, this boiler has a compact and lightweight design which makes installation easy and flexible. With features like built-in pump and expansion vessel, and an optional plug-in diverter valve, it's designed to save space. Plus, a variety of optional controls enhance user comfort and efficiency

Why Choose Us?

Next Day Installation

Next Day Installation

Subject to availability.

Free Wireless Programmable programmer

Free Wireless Programmable programmer

With every new combi boiler installation

What's included in your package?

In your package is everything you need to make your installation go as smoothly as possible.

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Free Celsius Aftercare

With our aftercare service we promise to keep your boiler in tip top shape. We will register the boiler warranty for you, deal with any boring paperwork and ensure you receive fast track priority for any warranty repairs. Our aftercare service also comes with discounted in-warranty boiler servicing and we will even remind you when your annual service is coming up! To see a full breakdown as well as terms and conditions please click here.

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Celsius are Worcester accredited installers and service engineers.

Worcester Bosch Accredited Installers

Some of the amazing benefits of working with an accredited installer include:

  1. Extended Warranties.
  2. Fully trained and certified engineers.
  3. Expert installation.

Why Choose the Worcester Bosch Greenstar 4000 24kw system boiler?

The Worcester Bosch Greenstar 4000 24kw System Boiler is a perfect fit for medium to larger sized homes with a hot water tank.  It offers that little bit more power compared to the 15kw and 18kw options.

As a Worcester Bosch Accredited Installer, Celsius are the ideal choice for installing your new Worcester Bosch system boiler.

It’s easy to fit into small spaces and simple to install, making it a hassle-free choice.  It comes with all the smart bits inside, like a pump and an expansion vessel, and even lets you add on a diverter valve or other cool controls to dial in that perfect comfort level.

Worcester Bosch provide a 10-year warranty when this boiler is fitted by a Worcester accredoted installer.  This extended warranty offers homeowners added reassurance in the boiler’s reliability for years to come.

This boiler takes the place of the previous Worcester Greenstar 24i system boiler, which was well-loved by Celsius customers for many years.

 

Our engineers review of this Worcester 4000 24kw system boiler

“The Worcester Bosch Greenstar 4000 24kw system boiler is a fantastic boiler that can power up to 14 radiators and a mid sized hot water tank.

We are installing these boilers regularly in homes around Edinburgh.  If you have a larger sized home with more radiators and you’re looking for a new system boiler with a bit more ‘oomph’, the 4000 24kw system boiler from Worcester is well worth a look.”

Michael – Founder and Gas Safe Certified Engineer @ Celsius.

 

What is the total maximum horizontal flue length?

100mm Flue Pipe Diameter = 12 metres minus any bends

125mm Flue Pipe Diameter = 21 metres minus any bends

What is the total maximum vertical flue length?

100mm Flue Pipe Diameter = 12 metres minus any bends

125mm Flue Pipe Diameter = 21 metres minus any bends

What should be deducted off the total flue length for each 90 degree flue bend on a 100mm flue pipe diameter installation?

Answer: 1.5 metres needs to be deducted for every 90 degree flue bend.

Example Horizontal Flue: If there is 2 x 90 degree flue bends needed for the installation, the maximum horizontal flue length would be reduced to 9 metres.

Example Vertical Flue: If there are 4 x 90 degree flue bends needed for the installation, the maximum horizontal flue length would be reduced to 6 metres.

Top Tip! For longer flue runs, increase the flue pipe size diameter from the standard 100mm to 125mm.

 

What should be deducted off the total flue length for each 45 degree flue bend on a 100mm flue pipe diameter installation?

Answer: 0.5 metres needs to be deducted for every 45 degree flue bend.

Example Horizontal Flue: If there is 1 x 45 degree flue bend needed for the installation, the maximum horizontal flue length would be reduced to 11.5 metres.

Example Vertical Flue: If there are 2 x 45 degree flue bends needed for the installation, the maximum vertical flue length would be reduced to 20 metres.

Top Tip! For longer flue runs, increase the flue pipe size diameter from the standard 100mm to 125mm.

 

Installation and Servicing instructions

Download the Installation and Servicing instructions here:

Installation & Servicing Instructions

User Guide & Operating Manual

Download the User Guide & Operating Manual here:

User Guide

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