Worcester Bosch Greenstar 29CDi Classic Combi Boiler Review

James Elston
Written by James Elston
Updated on 19th September 2023
Posted on 18th September 2023
Worcester Bosch Greenstar 29CDi Classic Combi Boiler Review

Worcester Bosch Greenstar Classic 29 CDi combi boiler review, prices & installation guide

The Worcester Bosch Greenstar 29CDi classic combi boiler is one of the essential parts of your home.

Without one, you’d be unable to have access to heating and hot water for your home.

replacement boiler is not a regular purchase you make, so you need to do your research on the reviews to make sure you pick the perfect boiler for your home!

This brings us nicely onto today’s Worcester Bosch Greenstar 29CDi Classic combi boiler review.

We’ve recently been making our way through the entire Greenstar range from Worcester Bosch, reviewing all of the Greenstar combi boilers available. They make some of the best combi boilers and system boilers on the market, so they are definitely worth a read.

Worcester Bosch is a company that’s known for maintaining very high-performance standards – as well as producing a very reliable central heating system.

With that in mind, let’s take a look at the Greenstar 29CDi classic boiler reviews:

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The Worcester Bosch Greenstar 29CDi Classic Combi Boiler Worcester Bosch Greenstar 29CDi Classic Combi Boiler Review

The Greenstar 29CDi classic has plenty of features that might make it the best boiler for your family.

First of all, we have to look at the performance stats.

You get a healthy 30kW central heating output, following by a 29kW hot water output with this condensing combi boiler.

Alongside this, there’s a water flow rate of 11 litres per minute – which is above average.


What does kW & Output Flow rate mean?

When purchasing a boiler, you will need to know what size kW you need to run your home efficiently.

  • If you purchase a boiler with a higher kW than you need, you will end up spending more money than is necessary.
  • If you purchase a boiler with too low kilowatts, you will not have enough power to run your home comfortably.

What size kW do you need for your home – click here?

The Greenstar 29 CDi classic central heating power(kW)  means you can comfortably provide energy to up to 15 radiators in the same property.

Worcester Bosch Greenstar 29CDi Classic Combi Boiler Review

As for the output flow rate, it means you can supply more than one bathroom with hot water at the same time.

The Worcester Bosch 29CDi reviews to be suitable for a typical family-sized property home with about 2-3 bedrooms and 1 or 2 bathrooms.

However, we must point out the size; it’s a pretty big wall-mounted combi boiler.

Check out the size section of this review down below to get the exact measurements and figure out whether or not this boiler will fit in your home.

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Energy Efficiency Worcester Bosch Greenstar 29CDi Classic Combi Boiler Review

There are two things to look at when checking how efficient a boiler is:

The first is the energy efficiency percentage – and the Worcester Bosch Greenstar 29CDi boasts 91.1% here.

That’s slightly lower than the other products in the Greenstar range as they’re usually at 92%.

The second thing to look at is the ErP rating – which you’ll see on product labels everywhere. Here, the 29CDi has an A rating.

Consequently, we can safely say that the Worcester 29 CDi combi is a very efficient combi boiler.

If your current boiler has worse ratings than these, then you’ll save so much money with the Greenstar 29CDi.

The more efficient your boiler is, the more money you save on energy bills.

With an energy-efficient boiler like the Greenstar 29CDi classic, you are helping the environment by minimising energy usage, which reduces carbon emissions.


Boiler Usability Worcester Bosch Greenstar 29CDi Classic Combi Boiler Review

One of the things we love about the Worcester Bosch Greenstar 29CDi Classic combi boiler is that it can be connected to digital or smart controllers.

You can literally connect it to any of the fantastic smart thermostats out there today.

Worcester Bosch has two different smart devices that you can use.

One is called Wave – and Worcester develops it.

The other is Bosch EasyControl – developed, obviously, by Bosch.

Both of these devices link up to your Worcester 29CDi boiler and let you control so many different settings via an app wherever you are.

You can get your phone out and choose the precise temperature in your home – or select which rooms you want to receive heating.

You can even set a schedule, so your heating will turn on at specific times.

It gives you a much higher degree of control than ever before.

As a result, smart thermostats let you manage your energy usage more effectively, which will reduce your fuel bills.

You can see how much energy you’ve used, and some thermostats even explain this to you in terms of how much money it costs.

Worcester Bosch Greenstar 29CDi Classic Combi Boiler Review

Of course, the Greenstar 29CDi is also compatible with other smart meters and thermostats – like Hive and Nest.

You don’t technically have to use a smart device with your boiler, but it will make it easier to use.

The Worcester Greenstar 29CDi Classic does still have manual controls, as well.

These are your typical boiler controls, hidden under a flap that can be pulled down.

You’ll see knobs that change the temperature and set schedules, and there are also special modes you can switch to as well.

There’s an ‘eco-mode’ setting for more energy efficiency, a ‘holiday mode’ that turns you heating off while you’re away, and more!

A Greenstar 29CDi classic manual will come with your boiler. If you decide you need a higher output boiler and go with the Greenstar 34CDi classic, a manual would come with this too.

If you ever lose your manual, don’t panic, you can always rely on Google!

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Boiler Warranty Worcester Bosch Greenstar 29CDi Classic Combi Boiler Review

As with pretty much every boiler on the market, it comes with parts and labour warranty. Always ensure that this is included in the new boiler cost.

The Worcester Bosch Greenstar 29CDi classic has a standard 10-year warranty straight out of the box.

You can extend the warranty if a Worcester Bosch accredited installer installs your boiler.

This will ensure that when buying a boiler and taking out boiler cover, you are covered if any problems occur.

The extra warranty isn’t essential as the initial warranty is free, but it could be worth it just to give yourself some extra security in case there’s a defect after 6 or 7 years.



This is what a lot of people are concerned about. The bad news is that this isn’t a compact combi boiler.

The 29CDi is 760x440x360mm in size.

Worcester Bosch Greenstar 29CDi Classic Combi Boiler Review

You can put your tape measure away; we’ll save you the time and tell you that it is too big for the majority of kitchen cabinets, so it is often wall-mounted.

So, you’ll have to see if you can accommodate a boiler of this size in your home and make sure it has correct boiler installation.

If you can’t, but want something with similar specs, then look at the Worcester Bosch Greenstar 32CDi Compact combi boiler.

It has slightly lower performance stats, but will still work for a typical family home with 3 bedrooms and up to 15 radiators.

Plus, it’s small enough to fit in a kitchen cupboard.


Our Worcester 29 CDi Review
Worcester Bosch Greenstar 29CDi Classic Combi Boiler Review

To conclude this Worcester Bosch Greenstar 29CDi Classic combi boiler review, we’ll start by saying how reliable and innovative this gas safe boiler is.

Yes, it’s a little on the large side, but you get plenty of power and litres per minute with that size.

If your home has up to 15 radiators and a couple of bathrooms, then this might be the perfect boiler replacement for you.

As long as you have space in your home to install it.

If you don’t have space, why not read our other Greenstar boiler blogs or have a look at Viessmann boilers.

At Boiler Central we offer a massive 12-year warranty on all Viessmann boiler.

For those of you with smaller homes, it could be more cost-effective to get something like the Greenstar 25 i as it offers less power, but at a lower price.

Or, if you need more power and heating ability, then there’s the 34CDi Classic that can heat up to 20 radiators.

At Boiler Central we over various boiler finance options so don’t let boiler prices put you off. We have some fantastic new boiler deals and best combi boilers for those who want to pay a little less too.

The Greenstar 29CDi classic boiler cost around £1,700 to £2,250.

Always remember often installation fees are not included within the price.

At Boiler Central, we include the installation fees.

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Written by
James Elston
James Elston Director Of Boiler Central
Posted on: 18th September 2023

James Elston is our resident boiler replacement and heating expert here at Boiler Central. With over 20 years experience in the boiler installation industry, James ensures that he knows everything there is about our Gas Safe boiler installations, energy saving and home heating solutions. This can be from simply procuring the latest best combi boilers, to reviewing and ensuring that Boiler Central maintains the highest standards across our boiler installation company.

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