Are you wondering how the Baxi Platinum range compares to the Worcester Bosch CDi Classic combi?
If you’re looking for a reliable combi boiler that suits a wide range of homes and scenarios, one – or both – of these ranges have probably already crossed your radar.
But how do they compare to each other? Upon first glance, it can be a tough choice!
That’s why, as an experienced engineer, I’m going to compare these two boiler ranges in-depth – including a rough guide of which model might be better suited to your home!
The Baxi Platinum range
Let’s begin with the Baxi platinum range – the most affordable of the two. Depending on the model you choose, it typically works out cheaper than the Worcester Bosch equivalent by a few hundred pounds. Plus, Baxi have been a bit smart and have provided a little extra output to the hot water which equates to around an extra 1/2 litre per minute (on the 33kw & 40kw models).
Of course, it doesn’t just come down to price. There’s so much more to think about, so let’s take a closer look at these models, below.
I’ve given you a brief overview of the outputs available to your central heating, as well as the flow rate you can expect to your taps.
- Platinum 24HE: 24kW to heating and 24kW to hot water, with 9.8 litres per min at 35 degrees Celsius
- Platinum 28HE: 24kW to heating and 28kW to hot water, with 11.5 litres per min at 35 degrees Celsius
- Platinum 33HE: 28kW to the heating and 33kW to the hot water, with 13.5 litres per min at 35 degrees Celsius
- Platinum 40HE: 32kW to the heating and 40kW to the hot water, with 16.4 litres per min at 35 degrees Celsius
TIP: To make sure you choose the correct output for your home, I’d recommend getting your chosen Gas Safe registered heating engineer to measure your home’s heat loss – just in case!
NOTE: If you need the 33 or 40kW boiler, please ask a heating engineer to check your incoming water pressure and flow rate before installing. This is because you won’t see the same brilliant flow rates if your incoming pressure isn’t sufficient.
Size and special features:
The Baxi Platinum range measures in at 780mm high x 450mm wide x 345mm deep – a bit too big to fit in a standard kitchen cupboard. However, this boiler is compatible with Baxi’s extra long twin flue and Multifit flue kits, giving you plenty of options when it comes to deciding where to fit your new boiler.
The Baxi Platinum range of boilers comes with Baxi’s fantastic 10-year no-quibble guarantee – which is valid as long as your boiler is serviced annually by a Gas Safe registered engineer.
Welcome to the section where I tell you which specification boiler should be best suited to your home (although always get a heat loss measurement to be 100% sure):
- Baxi Platinum 24kW combi: Ideal for a small property with 3-5 radiators and a shower (although it might be a bit slow to fill a bath).
- Baxi Platinum 28kW combi: Ideal for a small property with 1 – 2 bedrooms and around 4 – 7 radiators, with a shower and bath.
- Baxi Platinum 33kW combi: Ideal for a 3-4 bedroom family home with around 6-9 radiators, high pressure shower and a bath. It’s a great flow rate for the shower and will easily fill your bath.
- Baxi Platinum 40kW combi: Ideal for large flat with high ceilings, or a detached 4-bedroom house. Will happily heat 9-14 radiators, and will easily run two showers at once. Fills a deep cast iron bath quickly.
The Worcester Bosch CDi Classic range
Next, we have the Worcester Bosch CDi Classic range. Personally, I love these boilers. They’re simple and straightforward to install, and come with some excellent advanced features. This means your new boiler is fully prepared for the future – exactly what you’d expect from a premium boiler brand like Worcester Bosch, voted Which ‘Best Buy’ for several years running.
Output and flow rate:
Below, you’ll find all the essential output and flow rate specifications you’ll need to determine which model is most suited to your home.
- Greenstar 29CDi classic: This boiler provides an output of 30 kW to the heating and 30 kW to the hot water at 12.3 litres of hot water per minute (35 degrees Celsius)
- Greenstar 34CDi classic: This boiler will give you an output of 30 kW to the heating and 35 kW to the hot water at 14.3 litres of hot water per minute (35 degrees Celsius)
- Greenstar 38CDi classic: This boiler supplies an output of 30 kW to the heating and 40 kW to the hot water at 16.4 litres of hot water per minute (35 degrees Celsius)
- Greenstar 42CDi classic: This boiler allows for an output of 30 kW to the heating and 42 kW to the hot water at 17.2 litres of hot water per minute (35 degrees Celsius)
TIP: If you’re unsure about the outputs or flow rates you’ll need, don’t worry. Your heating engineer will be able to measure your home’s heat loss and advise you about the model you need.
This excellent range of boilers come with Worcester Bosch’s brilliant 10-year no-quibble guarantee (when fitted along with the brand’s own filter and controls, by an accredited installer). So, you’ll be covered on the off-chance anything goes wrong!
TIP: All Worcester Bosch’s guarantees are subject to the boiler being serviced annually by a Gas Safe registered engineer.
This range measures in at 760 mm x 440 mm x 360 mm, and won’t fit into a standard-sized kitchen cupboard or Edinburgh press. These are wall-hung boilers, so they can either go on your kitchen wall, or be placed inside a larger storage cupboard.
Now here’s the bit you need to pay attention to, as I’m about to tell you which model out of the Greenstar CDi classic range is best suited to your home.
With a great range of outputs and some fantastic flow rates on offer, the Greenstar CDi classic range of boilers are ideal for medium to large-sized homes with one or two bathrooms, a high pressure showers and a deep cast iron bath.
- Greenstar 29CDi classic: Best suited to medium-sized spacious properties with larger rooms, 10 – 14 radiators, and a high pressure shower or bath (not both at the same time)
- Greenstar 34CDi classic: A great choice for medium-sized spacious properties with larger rooms, 10 – 14 radiators, and a high pressure shower plus bath (can run two showers at once)
- Greenstar 38CDi classic: Ideal for medium to large properties with high ceilings and stone walls, with 10 – 14 radiators, and a high pressure shower or bath (can run two showers at once, or run a bath and a shower simultaneously)
- Greenstar 42CDi classic: Best suited to a large five-bedroom home with 2 bathrooms, and 10-14 radiators (can run two showers and a bath no problem)
TIP: Like I mentioned above, treat this as a rough guide – always get 2 – 3 detailed, fixed price quotes and ask your engineer to check you’re getting the right size for your home.
I hope you’ve found this blog to be of help when deciding which boiler range is right for you; the Worcester Bosch CDi Classic range, or the Baxi Platinum range. It may be difficult to choose, but there are some key differences that might help you make your decision a bit easier.
Do you have any specific questions I haven’t answered about either of these two ranges? Let me know in the comments’ section. I’ll endeavour to reply with something useful!