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Worcester Greenstar CDi Classic

( 41 Reviews )

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Available in outputs of 29kW, 34kW, 38kW and 42kW. Our Greenstar CDi Classic boiler is our top of the range combi boiler offering the highest levels of hot water comfort.This boiler has set the benchmark within the industry for efficiency and reliability and is suitable for homes with one or two bathrooms.

  • Build Quality is rated at a 5/5 for Worcester Greenstar CDi Classic :

  • Ease of Use is rated at a 5/5 for Worcester Greenstar CDi Classic :

  • Features is rated at a 5/5 for Worcester Greenstar CDi Classic :

  • Value For Money is rated at a 4/5 for Worcester Greenstar CDi Classic :

  • Overall is rated at a 5/5 for Worcester Greenstar CDi Classic :

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Review for Worcester Greenstar CDi Classic by Stokes Heating and Plumbing
22nd January 2020

I like the cdi range of Worcester’s I have found them to be trouble free for a long time they are reliable and easy to use always find them to be vert quiet

I like the cdi range of Worcester’s I have found them to be trouble free for a long time they are reliable and easy to use always find them to be vert quiet


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Review for Worcester Greenstar CDi Classic by CH4 Group Ltd
8th August 2019

Personally I’ve fitted a few. Mainly down to customers knowing the brand. Never had a problem with the boiler, they just are a little dated, and fairly expensive for what you get. Aftercare from technical is very good. Only issue is they are hard to work on when changing parts.

Personally I’ve fitted a few. Mainly down to customers knowing the brand. Never had a problem with the boiler, they just are a little dated, and fairly expensive for what you get. Aftercare from technical is very good. Only issue is they are hard to work on when changing parts.


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Review for Worcester Greenstar CDi Classic by S3 Heating and Plumbing
4th July 2019

The mighty CDI Classic is Worcester's flagship range starting with the 29CDi which replaced the 30CDi. Build quality shows when installing this beast, it's heavier than other boilers out there. An absolute dream to install, service and repair. Upgrade the 5 year warranty to 7 years by simply fitting Worcester's filter kit, it's worth the small price difference from using a non Worcester filter. Touch wood never had a call back to one of my installed Cdi Classics.

The mighty CDI Classic is Worcester's flagship range starting with the 29CDi which replaced the 30CDi. Build quality shows when installing this beast, it's heavier than other boilers out there. An absolute dream to install, service and repair. Upgrade the 5 year warranty to 7 years by simply fitting Worcester's filter kit, it's worth the small price difference from using a non Worcester filter. Touch wood never had a call back to one of my installed Cdi Classics.


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Review for Worcester Greenstar CDi Classic by Cliff Plumbing & Heating Limited
4th July 2019

The flagship Worcester boiler. A very reliable boiler from a trusted brand. They are Easy to fit, service and maintain...!a joy to work on. A simple fan pressure test let’s you know if the heat cell needs cleaning out too. Only downside is they are one of the most expensive boilers, but you do get quality. Would Highly recommend

The flagship Worcester boiler. A very reliable boiler from a trusted brand.
They are Easy to fit, service and maintain...!a joy to work on.
A simple fan pressure test let’s you know if the heat cell needs cleaning out too.
Only downside is they are one of the most expensive boilers, but you do get quality. Would Highly recommend


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Review for Worcester Greenstar CDi Classic by Tom Sutton Heating
27th June 2019

This boiler is top of the range. Great reliable product, easy to install easy to use relatively easy to service. Aluminium heat exchangers are not my personal choice but provided that these boilers are serviced properly at regular intervals then it should not be a problem. All in all it’s a a tried and tested reliable product, a great choice although maybe a little bit overpriced.

This boiler is top of the range. Great reliable product, easy to install easy to use relatively easy to service. Aluminium heat exchangers are not my personal choice but provided that these boilers are serviced properly at regular intervals then it should not be a problem. All in all it’s a a tried and tested reliable product, a great choice although maybe a little bit overpriced.


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Review for Worcester Greenstar CDi Classic by West Counties Plumbing and Heating
4th June 2019

The daddy of all gas boilers. The Worcester CDI range has been known in the industry as the top of the range boiler, super reliable and comes with a big guarantee

The daddy of all gas boilers. The Worcester CDI range has been known in the industry as the top of the range boiler, super reliable and comes with a big guarantee


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Review for Worcester Greenstar CDi Classic by Dh builders
22nd January 2019

This boiler is fantastic I am not a boiler engineer so did not install it but had it for a few months now and there is no comparison to my old one which was little over 15 years old

This boiler is fantastic I am not a boiler engineer so did not install it but had it for a few months now and there is no comparison to my old one which was little over 15 years old


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Review for Worcester Greenstar CDi Classic by Wakefield Boiler Services
29th December 2018

Build of the boiler is great, although not particular favourite having a ally main heat exchanger. Working on the boiler is very easy, simple enough to carry out full in depth services if required also. Features are a little pre dated as it’s not universal as such to benefit from using smart controls with the boiler to there full potential. I don’t think you get a great as much product for your money as others but it’s a brand you pay more for.

Build of the boiler is great, although not particular favourite having a ally main heat exchanger. Working on the boiler is very easy, simple enough to carry out full in depth services if required also. Features are a little pre dated as it’s not universal as such to benefit from using smart controls with the boiler to there full potential. I don’t think you get a great as much product for your money as others but it’s a brand you pay more for.


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Review for Worcester Greenstar CDi Classic by Afterglow Plumbing & Heating Ltd.
22nd September 2018

Love these boilers, serviced and looked after loads of them over the years, with very few issues. Good solid boilers. Well worth the investment

Love these boilers, serviced and looked after loads of them over the years, with very few issues. Good solid boilers. Well worth the investment


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Review for Worcester Greenstar CDi Classic by EnviroHeat
12th July 2018

Great boilers and really easy to install, especially with the telescopic flue option. The Worcester is a little bit pricey but you get what you pay for ultimately.

Great boilers and really easy to install, especially with the telescopic flue option. The Worcester is a little bit pricey but you get what you pay for ultimately.


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Review for Worcester Greenstar CDi Classic by Shisa Gas & Heating
5th July 2018

Good quality , easy to install and maintain, long guarantee. Great when a customer happy to pay bit more for a top brand. Really good support and service from Worcester during guarantee period.

Good quality , easy to install and maintain, long guarantee. Great when a customer happy to pay bit more for a top brand. Really good support and service from Worcester during guarantee period.


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Review for Worcester Greenstar CDi Classic by Meadows Plumbing And Heating
2nd July 2018

great quality, a very popular request from my customers. They service very we'll and repairs are few and far between which is not something you can say for a lot of boilers. the price is higher than a lot but it lasts longer and runs more efficient so you will find it is better value overall.

great quality, a very popular request from my customers. They service very we'll and repairs are few and far between which is not something you can say for a lot of boilers. the price is higher than a lot but it lasts longer and runs more efficient so you will find it is better value overall.


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Review for Worcester Greenstar CDi Classic by Gold BoilerCare Ltd
19th June 2018

Great little boilers with a good brand name, have fitted a few now with no issues and a good length warranty, would happily advise a customer to have one of these.

Great little boilers with a good brand name, have fitted a few now with no issues and a good length warranty, would happily advise a customer to have one of these.


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Review for Worcester Greenstar CDi Classic by M&M Gas Services Southern Ltd
3rd March 2018

Fitted loads of these, never have issues. yes expensive, but you do get your monies worth. second to none on after sales service. not many boilers can touch this

Fitted loads of these, never have issues. yes expensive, but you do get your monies worth. second to none on after sales service. not many boilers can touch this


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Review for Worcester Greenstar CDi Classic by Kw plumbing services
27th February 2018

After fitting a couple of these now in this range you can’t fault them to be fair. Bit on the high side price wise but your getting your monies worth.

After fitting a couple of these now in this range you can’t fault them to be fair. Bit on the high side price wise but your getting your monies worth.


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Review for Worcester Greenstar CDi Classic by Nickthegas
25th February 2018

Very efficient boiler. Another good product from the Worcester range. High output and upto 42kw so will cater for med to large households. Second to none after sales service. Great product

Very efficient boiler. Another good product from the Worcester range. High output and upto 42kw so will cater for med to large households. Second to none after sales service. Great product


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Review for Worcester Greenstar CDi Classic by A J Marsden Ltd
8th December 2017

We are a WAI company and find these to be the best within the Worcester range. Easy to fit, easy to service and the backup from Worcester is outstanding

We are a WAI company and find these to be the best within the Worcester range.

Easy to fit, easy to service and the backup from Worcester is outstanding


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Review for Worcester Greenstar CDi Classic by D. Dexter plumbing and heating services
7th December 2017

Although Worcester are a good boiler manufacturer, I’ve had a couple become faulty in the first 12 months of being installed. The after service is great and we’re fixed the next day, however they’re no longer my perferd boiler to install and maintain, unless requested by the customer. I’ve found other manufactures are far easier to strip down and work on which is a shame as Worcester used to be the best.

Although Worcester are a good boiler manufacturer, I’ve had a couple become faulty in the first 12 months of being installed. The after service is great and we’re fixed the next day, however they’re no longer my perferd boiler to install and maintain, unless requested by the customer. I’ve found other manufactures are far easier to strip down and work on which is a shame as Worcester used to be the best.


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Review for Worcester Greenstar CDi Classic by sjg gas services
6th December 2017

great quality, a very popular request from my customers. They service very we'll and repairs are few and far between which is not something you can say for a lot of boilers. the price is higher than a lot but it lasts longer and runs more efficient so you will find it is better value overall.

great quality, a very popular request from my customers. They service very we'll and repairs are few and far between which is not something you can say for a lot of boilers. the price is higher than a lot but it lasts longer and runs more efficient so you will find it is better value overall.


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Review for Worcester Greenstar CDi Classic by Smc Plumbing and Heating
5th December 2017

Excellent boiler from Worcester a brand that sells itself. Proven reliability from the CDI boiler range. The only downfall I find with Worcester boilers is they don't offer long guarantees like other boiler manufacturers .

Excellent boiler from Worcester a brand that sells itself. Proven reliability from the CDI boiler range. The only downfall I find with Worcester boilers is they don't offer long guarantees like other boiler manufacturers .


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Review for Worcester Greenstar CDi Classic by Crawley Gas Engineer
5th December 2017

This is probably my favourite of the new models, but I’m still not a fan, poor design for installation, poor design for maintenance, only ems-bus protocol, so very limited on controls, warranties are rubbish unless your a WAI, and I personally would want to put all my eggs in one basket, I have successfully managed to get my customers to switch to Intergas and they are so happy with my guidance.

This is probably my favourite of the new models, but I’m still not a fan, poor design for installation, poor design for maintenance, only ems-bus protocol, so very limited on controls, warranties are rubbish unless your a WAI, and I personally would want to put all my eggs in one basket, I have successfully managed to get my customers to switch to Intergas and they are so happy with my guidance.


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Review for Worcester Greenstar CDi Classic by Pipeline Plumbing Services Ltd.
29th October 2017

Great, tried and tested boiler! Reasonable priced spares and readily available. Good customer service. Good performance.

Great, tried and tested boiler! Reasonable priced spares and readily available. Good customer service. Good performance.


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Review for Worcester Greenstar CDi Classic by iGas Heating Ltd
10th October 2017

The only Worcester that is worth installing if the current range. Fantastic build quality and superb performance . Backed up by the best support in the industry. Only down side is the hoops to jump through to become accredited

The only Worcester that is worth installing if the current range. Fantastic build quality and superb performance . Backed up by the best support in the industry. Only down side is the hoops to jump through to become accredited


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Review for Worcester Greenstar CDi Classic by MasterGas Heating & Plumbing
20th September 2017

Great boilers. The thing I like most is everyone has heard of them so no need for the hard sell. They sell themselves and are super easy to fit, as are the controls

Great boilers. The thing I like most is everyone has heard of them so no need for the hard sell. They sell themselves and are super easy to fit, as are the controls


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Review for Worcester Greenstar CDi Classic by LMD Gas Engineering
15th September 2017

In my opinion one of the best boilers on the market. Easy and simple to fit. Good flow rate and can handle whatever you throw at it.

In my opinion one of the best boilers on the market. Easy and simple to fit. Good flow rate and can handle whatever you throw at it.


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Review for Worcester Greenstar CDi Classic by B.Brill Plumbing & Heating LTD
18th August 2017

In my opinion this is the best boiler on the market. Good build quality and great aftercare from Worcester. Overall good product. It is on the heavey side which does make it difficult for loft installs if your on your own. This is the only down side.

In my opinion this is the best boiler on the market. Good build quality and great aftercare from Worcester. Overall good product. It is on the heavey side which does make it difficult for loft installs if your on your own. This is the only down side.


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Review for Worcester Greenstar CDi Classic by M Maxfield Heating Engineer
9th August 2017

Excellent boiler, reliable easy to fit. Build quality composite plasticand aluminium not as good as brass and steel Very easy to use Easy to use features Expensive boiler but very reliable and decent warranty

Excellent boiler, reliable easy to fit.

Build quality composite plasticand aluminium not as good as brass and steel
Very easy to use
Easy to use features
Expensive boiler but very reliable and decent warranty


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Review for Worcester Greenstar CDi Classic by ACR Plumbing & Heating
8th August 2017

Easy to install and easy to service. PRV is a nightmare to replace due to its location. A lot of sharp edges within boiler

Easy to install and easy to service. PRV is a nightmare to replace due to its location. A lot of sharp edges within boiler


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Review for Worcester Greenstar CDi Classic by PG Plumbing
26th June 2017

Cdi Classic in my opinion is the best of the range . I have had no issues with any I've installed and I maintain a lot of ones I've installed too

Cdi Classic in my opinion is the best of the range . I have had no issues with any I've installed and I maintain a lot of ones I've installed too


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Review for Worcester Greenstar CDi Classic by British Gas
26th June 2017

Great boilers, had very few issues with these. Would recommend where space allows. Good guarantee period and top notch customer service.

Great boilers, had very few issues with these. Would recommend where space allows. Good guarantee period and top notch customer service.


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Review for Worcester Greenstar CDi Classic by Alton Plumbing & Heating Ltd
9th June 2017

Great boiler, good service back up, guarantee not a warranty on both parts and labour. As a Worcester Accredited installer we have fitted many of these boilers without any problems

Great boiler, good service back up, guarantee not a warranty on both parts and labour. As a Worcester Accredited installer we have fitted many of these boilers without any problems


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Review for Worcester Greenstar CDi Classic by Ickenham Heating Limited
3rd June 2017

Solid boiler that rarely needs fixing however when that left hand manifold does pin hole then because this is the larger of the Worcesters it is a breeze to fix and not crammed in. Brilliant bit of kit and my number 1 premium combi choice if space allows.

Solid boiler that rarely needs fixing however when that left hand manifold does pin hole then because this is the larger of the Worcesters it is a breeze to fix and not crammed in. Brilliant bit of kit and my number 1 premium combi choice if space allows.


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Review for Worcester Greenstar CDi Classic by Hennessy Heating
16th May 2017

CDI Classic is by far Worcesters best boiler. Great build quality unlike the new compact range. Had very few issues with them over the years and when i have they are easy to work on. Slightly overpriced now with Worcester's price increase.

CDI Classic is by far Worcesters best boiler. Great build quality unlike the new compact range. Had very few issues with them over the years and when i have they are easy to work on. Slightly overpriced now with Worcester's price increase.


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Review for Worcester Greenstar CDi Classic by JS HEATING
12th May 2017

Great boiler. Worcs flagship model. Will be a shame if the rumours are true that this model is being fazed out.

Great boiler. Worcs flagship model. Will be a shame if the rumours are true that this model is being fazed out.


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Review for Worcester Greenstar CDi Classic by Tower gas ltd
10th May 2017

Best boiler on the market lovely to work on brilliant bit of kit. Fault finding on these is very easy and flow rate of dhw is amazing. Some do have issues with the hex's splitting Worcester will replacing these if under ten years for free... they just won't fit them

Best boiler on the market lovely to work on brilliant bit of kit. Fault finding on these is very easy and flow rate of dhw is amazing.
Some do have issues with the hex's splitting Worcester will replacing these if under ten years for free... they just won't fit them


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Review for Worcester Greenstar CDi Classic by SAFGas Ltd
30th April 2017

They have plenty of knockers & haters but I spose that's what happens when you are the best. Never had an issue with these boilers and we've installed 100's as the build quality is solid. Ok the plastic manifold can fail as we've been & repaired loads but not any of our installs as it's simple enough to fit a shock arrester to eliminate this. They are easy to install, use & maintain with lots of features such as being able to range rate the chentral heating output based on the size of the house & number of radiators. People say you for what you get so if people think the initial outlay is high, the after sales & backup service is awesome with probably one of the cheapest manufacturer's for parts - which aren't needed much if Installed & maintained correctly.

They have plenty of knockers & haters but I spose that's what happens when you are the best.
Never had an issue with these boilers and we've installed 100's as the build quality is solid. Ok the plastic manifold can fail as we've been & repaired loads but not any of our installs as it's simple enough to fit a shock arrester to eliminate this. They are easy to install, use & maintain with lots of features such as being able to range rate the chentral heating output based on the size of the house & number of radiators. People say you for what you get so if people think the initial outlay is high, the after sales & backup service is awesome with probably one of the cheapest manufacturer's for parts - which aren't needed much if Installed & maintained correctly.


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Review for Worcester Greenstar CDi Classic by MB Gas & Heating Ltd
30th April 2017

Would be nice to see less plastic and more metal . Very reliable. Being a Worcester I would say overpriced but customer support is second to none , which cannot be faulted

Would be nice to see less plastic and more metal . Very reliable. Being a Worcester I would say overpriced but customer support is second to none , which cannot be faulted


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Review for Worcester Greenstar CDi Classic by DCB Plumbing & Heating
30th April 2017

Definitely the best boiler on the market, more reliable than than the sun setting. It has been in production for for over 10 years with almost no changes, its comes with an unbeatable guarantee. And backed up with excellent customer care

Definitely the best boiler on the market, more reliable than than the sun setting. It has been in production for for over 10 years with almost no changes, its comes with an unbeatable guarantee. And backed up with excellent customer care


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Review for Worcester Greenstar CDi Classic by Sunrise Plumbing & Heating
30th April 2017

Worcester Bosch's top of the range boiler, good build quality and grant flow rates. Backed by Worcester Bosch's guarantee which can be up to 10 years

Worcester Bosch's top of the range boiler, good build quality and grant flow rates. Backed by Worcester Bosch's guarantee which can be up to 10 years


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Review for Worcester Greenstar CDi Classic by PARAGAS
20th December 2016

Rolls Royce of combi's. unrivalled guarantee and a dream to install. Very big but looks nice on the wall. Fantastic features.

Rolls Royce of combi's. unrivalled guarantee and a dream to install. Very big but looks nice on the wall.
Fantastic features.


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Review for Worcester Greenstar CDi Classic by D.Q Plumbing and Heating
18th August 2016

Fitted well over 150 of these boilers over the last 7 years. I think maybe 2 or 3 have had faults occur but Worcester have been out and dealt with the issues with no quarms. Great boilers and a great manufacturer.

Fitted well over 150 of these boilers over the last 7 years. I think maybe 2 or 3 have had faults occur but Worcester have been out and dealt with the issues with no quarms. Great boilers and a great manufacturer.