The Worcester Bosch Greenstar 1000 combi boiler is an entry-level, reliable, budget-friendly choice for smaller UK properties, blending compact design with solid efficiency and the trusted Worcester Bosch quality homeowners and landlords value.
Worcester Bosch Greenstar 1000 Boiler Review: At a Glance
The Worcester Bosch Greenstar 1000 stands out as an affordable, compact combi boiler ideal for small to medium-sized homes, delivering straightforward heating and hot water with minimal fuss. Here’s a quick overview table covering key details.
| Aspect | Details |
| Boiler Type | Wall-hung combi (gas) |
| Outputs Available | 24kW and 30kW |
| Efficiency | 94% (ErP A-rated) |
| Hot Water Flow Rate | 8.5 l/min (24kW); 10.8 l/min (30kW) at 40°C rise |
| Dimensions | 655 x 395 x 285 mm (H x W x D); 26kg |
| Warranty | 5 years standard (extendable to 7 years with approved installers) |
| Estimated Supply Cost | £700–£900 |
| Estimated Installed Cost | £1,975–£2,900 (depending on property and work required) |
| Maintenance & Servicing | Annual Gas Safe service required to maintain warranty |
| Trustpilot (Brand) | 4.6/5 from over 49,900 reviews |
| Which? (Brand) | High customer satisfaction (often 5-star in recent surveys) |
| Best Suited For | Small to medium homes, apartments, 1–2 bedrooms, 1 bathroom |
| Key Features | QuickTap for faster hot water, stainless steel heat exchanger, quiet operation, simple controls |
Pros and Cons of the Worcester Bosch Greenstar 1000 Boiler
- Pros:
- Highly affordable entry into the Worcester Bosch range without sacrificing core reliability.
- Compact and lightweight design suits tight spaces like apartments or small kitchens.
- Quiet operation and stainless steel heat exchanger for long-term durability.
- QuickTap reduces water waste while waiting for hot water.
- Backed by Worcester Bosch’s strong brand reputation and service network.
- Cons:
- Basic features compared to higher-end models, lacking advanced diagnostics or intelligent filling.
- Shorter standard warranty (5 years) than premium Worcester Bosch options.
- Best limited to smaller properties; not ideal for larger homes with multiple bathrooms.
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Efficiency of the Worcester Bosch Greenstar 1000 Boiler
The Worcester Bosch Greenstar 1000 boiler achieves 94% efficiency with an ErP A rating, thanks to its condensing technology that captures extra heat from flue gases to reduce waste. This helps lower gas bills in typical UK homes, especially when paired with smart controls or good insulation.
Features and Technology in the Worcester Bosch Greenstar 1000 Boiler
The Greenstar 1000 incorporates practical features like a stainless steel heat exchanger for durability and resistance to corrosion, QuickTap functionality that delivers hot water in around 20 seconds after a quick tap on/off cycle to save water, and compatibility with Worcester Bosch controls plus third-party smart systems such as Hive, Nest, or tado.
Its simple interface with a clear display makes daily operation straightforward, while the compact size fits neatly into kitchen cupboards.
Costs of the Worcester Bosch Greenstar 1000 Boiler
Supply-only prices for the Worcester Bosch Greenstar 1000 range from £700 to £900 depending on the 24kW or 30kW model, positioning it as one of the most affordable options in the Worcester Bosch lineup.
Full installation costs typically fall between £1,975 and £2,900, varying by factors like pipework adjustments, flue length, and whether it’s a straight swap or involves additional work.
Running Costs of the Worcester Bosch Greenstar 1000 Boiler
With 94% efficiency, the Greenstar 1000 keeps annual running costs competitive for small to medium homes, potentially saving on gas bills compared to older non-condensing systems. Exact savings depend on property size, insulation, and usage, but the A rating and modulation help optimise fuel use for everyday central heating and hot water demands.
Is the Worcester Bosch Greenstar 1000 Boiler Right for You?
The Worcester Bosch Greenstar 1000 boiler suits straightforward heating needs in compact UK properties. Here’s expert guidance to decide.
Choose the Worcester Bosch Greenstar 1000 boiler if…
- Your home is small to medium-sized with 1–2 bedrooms and one bathroom.
- Budget matters most, and you want trusted Worcester Bosch quality at a lower price.
- Space is limited, such as in flats or terraced houses needing cupboard-friendly installation.
- You value quiet, efficient operation with simple controls for daily use.
Don’t choose the Worcester Bosch Greenstar 1000 boiler if…
- Your property has multiple bathrooms or high hot water demand requiring stronger flow.
- You prefer longer warranties (10 years) or advanced features like auto-fill systems.
- Larger family homes need higher outputs for consistent performance across zones.
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FAQs
How Does QuickTap Work on the Greenstar 1000?
QuickTap pre-heats water briefly when you turn the tap on and off quickly, delivering hot water faster and cutting waste on metered supplies.
Is the Greenstar 1000 Compatible with Solar Thermal Systems?
Yes, it supports solar compatibility for preheated water input, helping reduce gas use when integrated with solar panels.
What Maintenance Does the Greenstar 1000 Require Beyond Annual Servicing?
Flush the system during installation to remove debris, fit a magnetic filter to protect the heat exchanger, and check water pressure periodically.
How Does the Greenstar 1000 Compare to Older Worcester Bosch Models?
It offers modern condensing efficiency and a stainless steel heat exchanger over older aluminium ones, with improved compactness and quieter running.
Can the Greenstar 1000 Handle Hard Water Areas Effectively?
The stainless steel heat exchanger resists limescale better than aluminium, but a scale reducer or magnetic filter is recommended in high-hardness regions like the South East.
I’m Penny North, a home energy heating expert. My mission is to demystify new boilers and complex heating systems to help you achieve a warm, cosy home with lower energy bills and a smaller environmental footprint.