In the 2012 survey of Which? members who own a boiler, no other brand beat the Worcester Greenstar range of gas-fired condensing boilers for efficiency and reliability for the second year running. This is why all of the boilers tested from the Greenstar range qualify to be a Which? Best Buy.
In addition to receiving 23 Best Buy recommendations, the latest Which? report also looked at boiler servicing contracts, where the Worcester, Bosch Group brand came top for the fifth consecutive year.
The boilers below are just an example of the range available and are primarily the boilers that we install. All new installations are followed up with a annual service and some models carry a guarantee of up to 7 years.
Gas Boilers
Greenstar CDi Classic Regular series
Central heating outputs: 30 & 40kW
- Impressive heating outputs make CDi Regular boilers an excellent choice for installation in larger properties
- A top performing wall-mounted regular boiler with fascia-mounted heating temperature control knob and operational status display.
Si Combi Boilers
Greenstar 25Si and 30Si series
Central heating outputs: Both models – 24kW
Hot water flow rates: 10.2 & 12.3 litres per minute* @ 35ºC temperature rise
- Si combis are also suitable for apartments and small to medium sized 1 bathroom properties, and offer slightly higher hot water flow rates than the i Junior series
- Si combis allow the hot water temperature to be controlled and can be used with a wider range of optional controls
- Si combis can also be installed in a variety of locations, including kitchens, utility rooms, bathrooms, airing cupboards, lofts or garages
- All Si appliances come with in-built frost protection.
CDi Combi Boilers
Greenstar 29CDi Classic, 34CDi Classic, 38CDi Classic & 42CDi Classic series
Central heating outputs: All models – 30kW Hot water flow rates: from 12.3 to 17.2 litres per minute* @ 35ºC temperature rise
- Our ‘top of the range’ award-winning wall-mounted combi series has just got better, CDi Classic appliances offer a wide choice of operating features for greater user comfort and economy with their higher central heating outputs and increased hot water flow rates
- The higher output CDi Classic combis can be suitable for larger two bathroom properties
- CDi Classic appliances condense in both heating and hot water modes for even greater efficiency and fuel savings
- They also feature a modulating pump which reduces electricity used by the pump by up to 30%
- An extensive choice of controls is available for use with CDi Classic combis, including sophisticated intelligent controls which provide the ultimate in user convenience, performance and economy
- All CDi Classic appliances come with in-built frost protection and filling link.
Greenstar 28CDi Compact, 32CDi Compact & 36CDi Compact series
Central heating outputs: All models – 24kW Hot water flow rates: from 11.4 to 14.7 litres per minute* @ 35ºC temperature rise
- Our smallest combi boiler, the CDi Compact can be installed in a wide range of locations, including inside a standard kitchen cupboard
- Despite their compact size, the CDi Compact combi’s high outputs can make them suitable for larger 2 bedroom properties
- CDi Compact appliances condense in both heating and hot water modes for greater efficiency and savings on fuel
- The CDi Compact’s modulating pump reduces electricity consumption by up to 30%
- An innovative new heat exchanger design and advanced manufacturing technology results in higher efficiency, greater reliability and durability
- Large easy-to-read, user-friendly displays
- Full range of optional controls is available for use with CDi Compact combis, including sophisticated intelligent controls for maximum user convenience and comfort
- All CDi Compact appliances come with in-built-frost protection and filling link.
System Boilers
Greenstar 30CDi Classic System
Central heating output: 30kW
- A top performing system boiler for bigger properties with a larger heating requirement
- For added user comfort and economy the 30CDi System can be used with a choice of digital controllers*
- One button holiday mode* and frost protection
- When combined with our new generation of intelligent controls and Greenskies solar further savings are achieved.