Worcester Bosch Greenstar 4000 Combi Review: An Expert Gas Engineer's Opinion for West Sussex Homes

Greenstar 4000 Combi Review: Ideal Boiler Replacement for Horsham & Adur Homes.

Hi, I'm Andrew Tyler, a Gas Safe Registered Engineer and co-owner at Prime Boiler Care. 

We specialise in keeping homes across the Horsham and Adur Districts warm and well-supplied with hot water. 

That includes everywhere from Storrington and Billingshurst to Shoreham-by-Sea, Lancing, and Southwick.

As a local heating engineer, I spend most of my time installing, servicing, and repairing boilers. When a customer in Southwater, Henfield, or Steyning asks me for a reliable boiler replacement for a small to medium-sized home, one model comes up again and again: the Worcester Bosch Greenstar 4000 Combi.

This is my honest review of why the Greenstar 4000 is often the best choice for homeowners in Pulborough, Sompting, and our neighbouring West Sussex communities.

A Seamless Upgrade to a Highly Efficient Combi Boiler.

The Greenstar 4000 is designed to be the direct replacement for the incredibly popular Worcester Bosch Greenstar i range. 

If you currently have an older 'i' series boiler, upgrading to the 4000 is a straightforward swap, which means less disruption to your Horsham home.

It's suitable for small to medium-sized homes with one bathroom. 

It comes in two practical Combi models—the 25kW and the 30kW—offering hot water flow rates of up to 12.3 litres per minute. 

This flow rate is more than enough to ensure powerful, warm showers, even in areas that suffer from low mains water pressure, like some properties around Steyning or Storrington.

Key Benefits for West Sussex Homeowners

• Hydrogen-Ready for the Future: A major plus for customers across West Sussex looking for long-term peace of mind is that the 4000 range can run on a 20% hydrogen blend. 

    This means you can be confident that the boiler will run on gas for its lifetime.

• Reduced Bills and Water Waste: The advanced technology within the 4000 includes a wide power range, which intelligently reduces gas consumption and helps lower energy bills—a must for every homeowner in Lancing or Shoreham-by-Sea. 

     

     It also has an innovative 'Quick Tap' water-saving function to help you reduce water waste.

• Whisper-Quiet Operation: I've been really impressed with how quiet this boiler is. 

    It’s one of the quietest combi boilers available, making it easy to live with, especially if your boiler is installed in a kitchen cupboard in your Billingshurst or Southwick home.

• Extended Guarantees: When you choose Prime Boiler Care, we want you to have total confidence in your new boiler. 

    The standard guarantee is 7 years, but when installed with any Greenstar System Filter by an accredited installer like us, this increases to 8 years. 

    We can even offer guarantees up to 10 years in total, giving you years of worry-free heating.

Whether you're in Horsham needing a new boiler installation or in Sompting looking for an energy-efficient upgrade, the Worcester Bosch Greenstar 4000 Combi boiler is a fantastic choice that offers modern design, exceptional reliability, and excellent efficiency. 

It's a reliable boiler for any small West Sussex home.

Ready to Upgrade Your Boiler in West Sussex?

If you live in Horsham, Southwater, Storrington, Shoreham-by-Sea, Lancing, or any surrounding area and you are considering a new or replacement boiler, please get in touch.

As your local, trusted Gas Safe Engineer covering Horsham and the Adur District, I can provide you with a free, no-obligation quote and advise on the best Worcester Bosch boiler for your specific home.

Call Prime Boiler Care today to arrange a home visit or to discuss a Greenstar 4000 combi boiler quote.

Prime Boiler Care

Suite 54, Standby Business Centre

Foundry Lane

Horsham, West Sussex, RH13 5PX

01403 814602