Are you looking for the perfect boiler to heat all the generously-sized rooms in your Edinburgh property?
If you need at least 12 radiators, and find your old boiler struggles to keep up, it can be quite a pain to find a decent replacement.
In this blog post, I take a closer look to find out if the Worcester Bosch Greenstar 34cdi classic combi boiler is up to the task…
Introduction
The Worcester Bosch 34cdi classic combi is ideal for larger Edinburgh properties – you know, the flats or houses with the big, high ceilings and stone walls, that can often feel a wee bit drafty.
This particular model also has built-in frost protection, and is fully compliant with new ERP directive – so you may even find you’ll make some savings on your heating bills.
Output and flow rate
With a heating output of 30kw to the heating circuit, this boiler is only really suitable for a home with at least 12 radiators – any less than that, and you simply won’t be utilising the extra power.
The output to the hot water is 34kw, which provides a good flow rate of 14.3 litres per minute at 35 degrees celsius. You’ll find the 34cdi classic will quite comfortably run one bath and a shower.
Size
The Worcester Bosch classic range of boilers are wall-mounted, and can easy be fitted in your kitchen, storage cupboard or bedroom. However, they aren’t as small as the compact range, and therefore you won’t be able to fit them in an Edinburgh press or kitchen cupboard.
You’ll find the simplest place to have a classic combi boiler installed is if you have space on your kitchen wall – they aren’t too imposing, and this also makes them ultra accessible for when you need to access to the controls.
Guarantee
The 34cdi classic combi boiler comes with Worcester Bosch’s popular no quibble 10-year boiler guarantee* when fitted with Worcester Bosch Greenstar filter and comfort controls – also covered for 10 years.* It’s such an amazing deal, and one of the reasons I recommend this particular brand to my customers.
In my opinion, Worcester Bosch currently has the best boiler guarantee on the market. It’s true that you may find longer guarantees from other boiler companies, but there’s often a catch in the small print, or extra credit card charges before they’ll even agree to a call-out.
Tech specs
Below, you’ll find all you need to know about the Worcester Bosch 34cdi Greenstar classic at a glance:
- Heating output: 30kw
- Hot water output: 34kw
- Ideal for: A large home with 12+ radiators
- Guarantee: 10 years*
- ERP rating: A, rating 92% efficiency
Conclusion
If you have large rooms with high ceilings and stone walls, you’ll find you need a boiler that’s really up to the job – look no further than the Worcester Bosch Greenstar 34cdi classic! Its high central heating output means it can supply 12+ radiators, for optimal comfort in your home.
As for the hot water, it’s ideal if you have one to two bathrooms, and at 14.3 litres of hot water per minute, you’ll discover it can quite happily run a bath or shower.
The classic is wall-mounted, and comes with Worcester Bosch’s incredible 10-year no quibble guarantee* – the best on the market.
What do you think of the Worcester Bosch Greenstar 34cdi classic combi boiler?
*10 year guarantee is only valid if serviced annually by a Gas Safe Registered engineer

Could you please send me a price list
Is this the boiler for me
is this the boiler i should be buying , i have a 2 bedroom terrace house , at the moment i have the old back boiler system. i have all the new radiators in place
already , i had them replace a year ago. what would be the total cost for parts and labour to have this fitted and all work carried out . Michelle