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Worcester Bosch Greenstar CDi Classic Combi


The Worcester Bosch Greenstar CDi Classic Combi boiler is one of the finest wall mounted heating appliances from the Worcester Bosch range. Worcester Bosch Greenstar CDi Classic Combi Compare Boiler Quotes

A reliable and simple to use boiler that delivers excellent fuel economy.

With prices starting at £800 and ranging to £1240 excluding VAT and installation fees, this appliance is both value for money and highly economical. 

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If you have a large or small property, multiple options within the range can deliver you the best system for your home. Choose from the 29,34,38 and 42kW flow rate output models.

Your Gas Safe engineer will tell you which output you need to run your home effectively and efficiently.

29CDI is perfect for two bedroom flats or apartments with one bathroom. With a flow rate of 12.3 litres per minute and the capability of running 12 radiators.

This award-winning condensing boiler offers high central heating outputs and a market-leading flow rate of up to 17.2 l/min.

The Greenstar CDi sets the benchmark for efficiency. Worcester Bosch Greenstar CDi Classic Combi Compare Boiler Quotes

The low energy modulating pump reduces electrical usage by up to 30%. Burning less fuel than the average boiler, the Greenstar CDi meets all current and future ErP legislation requirements. 



The Greenstar CDi Classic Combi boiler has market-leading technology and boasts an excellent range of operating features.

This offers the user a greater economy and more comfort in their home.

The compact design packs a punch and will significantly increase central heating outputs and deliver greater hot water flow rates. 

Worcester Bosch prides themselves on efficiency. The Greenstar CDi Classic Combi will burn less fuel thanks to its intelligent condensing system that can operate in either heating or hot water mode. Worcester Bosch Greenstar CDi Classic Combi Compare Boiler Quotes

The smart control system ensures you have a convenient user experience, delivering ultimate performance and economy. 



All Worcester Bosch products come with a two to seven year warranty as standard.

Always follow the guidelines given to keep the warranty valid. Worcester Bosch Greenstar CDi Classic Combi Compare Boiler Quotes

Warranty is great for peace of mind if issues occur.


What we think …

With the highest hot water flow rate of the Greenstar combi wall mounted range, the Classic offers instant hot water that is always available.

Multiple model ranges mean two bathroom properties can be supplied with higher output options to ensure the demand for hot water in family homes is consistently met.

The choice of controls enables a greater level of comfort and economy. Worcester Bosch Greenstar CDi Classic Combi Compare Boiler Quotes

With a low energy pump, you can reduce electrical uses which gives you a better economy on your electrical bill.

If you need to refill your system the inbuilt key-less filling link makes this effortless. Ensuring your home is always supplied with heating and hot water. 

The range of heat outputs makes this boiler perfect for most homes.

A combi boiler supplies hot water on demand and supplies the heating system of your home; this removes the need to have a large water tank which needs to reheat after usage. 

The multiple controller options give you a simple way of controlling your boiler and make splitting the temperature of your heating and hot water as easy as touching a button. 

All Greenstar CDI Classic boilers come with an efficiency A-rating. That’s for both hot water and heating.

By replacing your older boiler system with a new CDI, you could see savings of up to £305 per year on your energy bills. 

The CDI Classic range is designed to be a gas combi boiler however you can convert to LPG fuel if preferred.

The size of the boiler means it isn’t intended to be fitted into a standard kitchen unit. They are not slimline and the boiler itself is 50KG. However, the design is simple and not too obtuse. 

Greenstar CDI Classic range has an improved condensate syphon. According to Worcester, this can help your boiler to stop freezing up and going into lockout during the winter months. The frost protection allows the unit to be installed in your garage or loft and should protect you in temperatures as low as -15 for up to 48 hours. 

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What our customers think

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Would recommend

Stressed when needed a new boiler but easy process with affordable finance. New boiler installed within a few days with option for next day.

Paul Jones 5 Star on Trustpilot

We were very impressed

On the day, they came on time. Lovely people, they kept everything clean. Explained everything to me. No mess, kept me informed.

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Great Experience

Great experience - quick to arrange, easy to work with the very responsive online team and all installed faster than expected.

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