Greenstar 1000 30kW Combi Boiler

Our Thoughts

The Worcester Bosch Greenstar 1000 30kW combi boiler is a good boiler. It has a high energy efficiency rating meaning your gas bills stay low. As a UK brand, parts are widely available. Worcester Bosch is a trusted name in the industry and provides a decent warranty for peace of mind.

Worcester Bosch Office Building UK.

Worcester Bosch is a household name, and for good reason. The Greenstar range has won the coveted Which? Best Buy award for several years. Worcester Bosch has developed a reputation as a reliable boiler brand across the UK over the last few decades. The company has an ‘Excellent’ rating on Trustpilot, based on real reviews.

There are, of course, some negatives. A lot of components are made by third parties rather than in-house. This adds complexity to supply chain and design considerations. In addition, some internal parts are plastic or composite which could easily be brass or copper. Other manufacturers will use the highest-quality parts available. The issue with plastic parts is that they are of a lower quality than brass parts and are more prone to perishing.

Stainless steel heat exchanger

Unlike the rest of the Worcester Bosch Greenstar boiler range, this 1000 model uses a stainless steel heat exchanger. This means that the 94% energy efficiency will last longer than with aluminium equivalents.

Performance 7/10

Upgrading to this boiler with 94% efficiency saves money.

Quality 7/10

Worcester uses a variety of quality parts in their boilers. Their boilers tend to last 7-15 years, but this boiler only has a 5 year warranty which may speak volumes about their confidence in the boiler.

Value 7/10

The Greenstar 1000 combi boiler is good value. It’s a reasonably priced boiler for power output. However, considering the potential for issues with composite and aluminium parts rather than brass and steel means more things could go wrong than with other boilers

Customer Satisfaction 9/10

Worcester Bosch is the UK’s biggest boiler manufacturer. They have great customer service and an ‘Excellent’ rating on Trustpilot.

What’s our choice?

Although the Greenstar 1000 is a great boiler, for roughly the same price, you can get a Viessmann Vitodens 050 combi boiler. These are superior boilers with stainless steel heat exchangers ensuring continued high performance.

The 050-W is 92% efficient, obviously less than the Greenstar 1000, but as it has a top-of-the-range stainless steel heat exchanger, the boiler will gain efficiency over the first few years of use and has integrated WiFi and other functionality.

Read our Worcester vs Viessmann guide or learn more about the Vitodens 050-W combi boiler range.