Are you looking for the best Worcester Bosch system boiler to suit your flat or small house?
Introducing the Worcester Bosch Greenstar 18i! It’s a great choice if you have an apartment or small property, and you have an existing system boiler – or you’re looking to upgrade from your tired, old regular boiler to a more efficient system. Plus, you’ll have all the hot water you’ll ever need!
However, choosing a new boiler is often tough, so how will you know if the 18i is the best fit for your home?
Well, I’m about to use my experience as an engineer to tell you all you need to know about the Greenstar 18i system.
Introduction
Having fitted many of these boilers over the years, I’ve come to know them like the back of my hand. Homeowners tend to choose these when they’re looking for a replacement for their old regular boiler, with an existing expansion tank. They’re usually looking to upgrade from their old one-pipe central heating system, and switch to a more energy efficient boiler.
So, in that regard, the 18i ticks all the right boxes! After all, system boilers are generally cleaner, quieter and more efficient than regular boilers. However, if you’re switching to a pressurised system, beware that there is some extra upheaval to put up with. It may not be the right choice if you don’t want to jeopardise your concrete or sealed flooring!
Output and flow rate
I always like to start off these reviews by looking at the basic outputs you can expect to your heating and hot water. So, as the name suggests, the Greenstar 18i is a 18kW boiler. It supplies 18kW to your heating and hot water, meaning it’s ideal for a flat or small home with 5 – 8 radiators.
However, if your home is stone-built with high ceilings and minimal insulation, I’d recommend sizing up. The best way to check is to get a heating engineer to measure your heat loss – this way, you can be sure you’re getting the right size for your home.
Another vital consideration is to ensure your pipework is up to the job, as this is a high-efficiency boiler. This means it has to be fitted with a fully-pumped system.
Finally, because this is a system boiler, you won’t notice a different to the flow rates to your taps. That is, unless you decide to fit it alongside a new unvented cylinder to give you an even better flow rate.
Size and special features
The Worcester Bosch Greenstar 18i is a wall-mounted boiler. It measures in at 710mm x 400mm x 330mm, so it won’t fit in a standard-sized kitchen cupboard. Not ideal if you’re struggling for space, however, it will look perfectly at home in your kitchen, or in a larger storage cupboard.
However, the 18i can also be combined with the brand’s own range of high-efficiency indirect or solar compatible Greenstore cylinders.
Guarantee
Great news! The Worcester Bosch Greenstar 18i system boiler comes with Worcester Bosch’s fantastic no quibble 8-year boiler guarantee when installed by an accredited engineer – and it’s fitted with the brand’s own controls and magnetic central heating filter. This is a guarantee you can depend on, with no small print to catch you out!
This is one of the biggest reasons so many homeowners love Worcester Bosch. In fact, it’s been voted Which’s ‘Best Buy’ for several years running.
Tech specs
Now it’s time for a quick look at everything you need to know about the Worcester Bosch Greenstar 18i.
- Output: 18kW to heat radiators and hot water tank
- Ideal for: A small flat or bungalow with 5 – 8 radiators
- ERP rating: A
- Guarantee: 8 years (when serviced annually by a Gas Safe registered engineer)
- Size: 710mm x 400mm x 330mm (wall-hung)
Conclusion
Looking for a straightforward, direct replacement for your old system boiler – or an inefficient heat-only boiler? The Worcester Bosch Greenstar 18i is potentially a great choice. You can still take advantage of the great flow rates you’ve come to expect – or fit an unvented cylinder for even better pressure to your taps.
This is a wall-mounted boiler, so it won’t fit into a standard sized kitchen cupboard or Edinburgh press. However, it’s also compatible with solar heating – so in a way, it’s futureproof!
Do you have any questions about the Worcester Bosch Greenstar 18i? Let me know in the comments’ section! I’ll reply with something helpful.
