Combination (combi) boilers are the most popular type of boiler in the UK due to their smaller size and being more economical than other boiler types. Our combi boilers are compatible with all fuel types (gas, oil and lpg) and come with up to a 12 year guarantee.
Greenstar 8000+
Our 8000+ range of combi boilers, feature a modern design, innovative new features and comes with up to a 12 year guarantee.
Greenstar 4000
Our brand new Greenstar 4000 boiler replaces our best selling boiler the Greenstar i and comes with a host of new feature designed to save you money, guaranteed for up to 10 years.
View our range
We offer award winning combi boilers of all sizes and outputs, suitable for any home.
Find the perfect boiler for you
If you want to find the perfect boiler for your home, our find a boiler tool can help. Answer some simple questions about your home and we'll select the boiler that is perfect for your home.
12 year guarantee with Greenstar 8000+
Our Greenstar 8000+ boilers come with a 12 year guarantee for customers who choose a local Worcester Bosch Accredited Installer to install their boiler, along with a Worcester Bosch Greenstar system filter.
What is a Combi Boiler
Worcester Bosch have a wide range of combination boilers ranging from our design-led Lifestyle range, to our compact range to fit in your kitchen cupboard. Learn why a Worcester Bosch combi boiler could be the perfect boiler for your home.
Find a local installer
Each heating system needs custom designing. Find and contact a Worcester Accredited Installer in your area to book a home visit.
After calculating the best system for your home and hot water requirements, your installer will then provide you with a free quote.