Are you looking for a fantastic flow rate from a compact combi boiler?
If the answer is yes, then the Worcester Bosch Greenstar 36cdi compact is probably right up your street – and just by chance, it’s next on my list to review!
So, sit back, relax and find out all you need to know about the 36cdi compact, below…
Introduction
The Worcester Bosch Greenstar 36cdi compact is a particularly attractive option, as it provides the largest hot water output of all the compact combis in the range, despite being physically the same size.
Which brings me to the real selling point of this combi boiler…
Output and flow rate
With a fantastic flow rate of 14.7 litres per minute, the 36cdi compact particularly packs a punch, and provides all the hot water you need to fill a deep bath or high pressure shower.
This boiler gives a 24kw output to your central heating, which is perfect for a standard three to four-bedroom home. However, if you have 12+ radiators in your home, you should discuss your options with a heating engineer, as you may find you’ll be better off with a classic 30kw model.
Size
The compact range of boilers from Worcester Bosch are simply fantastic if you’re worried about not having much space in your home – and the 36cdi is no different.
You’ll find these models are particularly popular because they are small enough to quite happily fit in a kitchen cupboard or Edinburgh press.
Guarantee
The 36cdi compact comes with Worcester Bosch’s best no quibble 10-year boiler guarantee* when fitted with Worcester Bosch Greenstar filter and comfort controls – which are also covered for 10 years.* It’s a fantastic deal, and actually one of the reasons I recommend this particular brand to all my customers.
This is one area where Worcester Bosch really stands above its competitors, because although you may find longer guarantees from other boiler companies, 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, I’ve put together a quick summary of everything you need to know about the 36cdi compact:
- Heating output: 24kw
- Hot water output: 36kw
- Ideal for: A three to four-bedroom house with a deep bath or high pressure shower
- Guarantee: 10 years*
- ERP rating: A, rating 93% efficiency
Conclusion
If you’re looking for a great flow rate and compact size, the Worcester Bosch Greenstar 36cdi compact combi boiler will do the job. It has the largest hot water output of all the compact combis in the Worcester Bosch range, and it will still happily fit inside a kitchen cupboard or Edinburgh press.
The flow rate of 14.7 litres per minute will allow you to comfortably fill a deep bath or run a high pressure shower, making this a main selling point. However, with only 24kw to the hot water, it isn’t suited to larger homes with 12+ radiators – if this is the case, you’d be better off with a 30kw classic combi, instead.
We top all this off with Worcester Bosch’s incredible no quibble 10-year guarantee* when fitted with a Worcester Bosch Greenstar filer and comfort controls – so you’ll be covered whatever happens.
What do you think of the Worcester Bosch 36cdi compact
*10 year guarantee is only valid if serviced annually by a Gas Safe Registered engineer

What boiler size should i choose in combi if i have a proper 4 bed hours with 2 bathrooms and 1 additional toilet?
Hi
May I know in what temperature is this flow rate 14.7L please.
Cheers
Combi 36cdi. Is this the best for me, I have 1 bath, 2 showers and 21 rads.
Many thanks