Your Trade Prices
Log in to view your exclusive prices
Worcester Greenstar 25Si Combi Gas Boiler ERP 7733600050
774429
Overview
The all new Worcester Greenstar gas-fired Si Compact is the successor to the Greenstar Si combi boiler. Ideal for apartments and small to medium sized properties with one bathroom, it has a host of performance-enhancing features, including the revolutionary WB7 heat exchanger which enables the appliances to deliver DHW flow rates of 10.2 and 12.3 l/min despite their compact size. The new Greenstar Si Compact has been designed to make installation and commissioning easier and quicker, and comes supplied with a unique wall-mounting jig which enables the installer to quickly pre-plumb all seven pipe connections without the boiler being on the wall. A built in LCD display provides quick and easy operation status and fault diagnosis, providing greater clarity during maintenance and operation.
- Compact and lightweight
- Fits in a standard kitchen cupboard
- User-friendly displays for ease of use
- Hot water can be adjusted to fine tune comfort
- Wide choice of controls enables greater comfort and economy
- Frost protection is included, reducing frost risk if installed in a garage or a loft
- Simple boiler control knobs with clear temperature display
- Low energy pump reduces electrical usage
- Instantaneous hot water, always available
- Achieves an A+ ErP package efficiency rating for heating when installed with a Wave smart internet connected control
Technical specification
ERP Efficiency
0.93
ERP Rating
A
Boiler Type
Combi
Depth
280 mm
Height
978 mm
Width
395 mm
Maximum Horizontal Flue 100mm
6 m
Maximum Horizontal Flue 125mm
15 m
Maximum Vertical Flue 100mm
6 m
Maximum Vertical Flue 125mm
15 m
External or Internal
Internal
DHW Output
25 kW
DHW Flow Rate at 35 Degree Rise
10.2 ltrs / min
DHW Output Min and Max
< 12
SEDBUK SAP 2009 Rating
0.898
SEDBUK SAP 2005 Rating
A
CH Condensing Max Output
24 kW
Heat Output
24 kW
Fuel Type
Natural Gas
Includes
Boiler Only
Noise Level
52 dB
Nox Class
5
Solar Compatible
No
Type
Boiler
Years Guaranteed
5
Registered with the Energy Savings Trust
Yes
Dimension 1
280
Dimension 2
390
Dimension 3
680
Manufacturer Model No
7733600050
Brand Name
Worcester Bosch
Reviews
Greenstar Heatslave II 18/25 Erp+
The high performance floor-standing Greenstar Heatslave II series is the UK's most popular oil-fired combi boiler. With a range of models available, making it suitable for small, medium and large sized properties, the boiler features a unique slide-out control panel which allows simple boiler adjustment and programming, as well as easy access installer connections and a one piece stainless steel primary baffle for rapid servicing and maintenance.
Show More£2480.40 each (Inc. VAT)
Quick view
Greenstar Heatslave II Ext 12/18
The Greenstar Heatslave II series is the UK’s most popular external oil-fired combi boiler. With a range of models available, making it suitable for small, medium and large sized properties, the boiler features a robust IP45 weatherproof cabinet to protect from the weather and a one piece stainless steel primary baffle for rapid servicing and maintenance.
Show More£2482.80 each (Inc. VAT)
Quick view
Worcester Greenstar Ri 15kW Heat Only Gas Boiler ERP 7733600308
The Greenstar Ri boiler range is available in 4 models with outputs up to 24kW, making the range suitable for an even wider range of households with stored hot water systems. The boilers are compact enough to be installed in a standard kitchen cabinet and are a one-man lift, weighing just 22.6kg, the lightest in their class. Greenstar Ri boilers can be used with compatible Worcester unvented cylinders for the optimum system solution.
Show More£836.35 each (Inc. VAT)
Quick view
Worcester Greenstar 12I System Gas Boiler ERP 7733600010
The Worcester 12i System Boiler is the perfect choice for small properties such as flats and bungalows. Offering compact dimensions, a low lift weight and A-Rated efficiency, the 12i has the potential to save money on annual heating bills and offer reliability through even the coldest months. The 12i System Boiler will require a hot water cylinder in order to deliver hot water to the property. The high efficiency of the 12i boiler can cut heating and hot water bills by 15-20% annually (When replacing an older, G-Rated boiler) and is up to 30% cheaper to run. These savings mean that over the years the boiler will essentially pay for itself, as the quality of Worcester boilers means that you won't need to replace it for many years. Easy to use, the Worcester 12i includes simple boiler controls to ensure your boiler is set at the correct temperature for the customer's need, while also providing operational information and diagnostics to help with maintenance.
Show More£923.08 each (Inc. VAT)
Quick view