Looking for a Worcester Bosch system boiler that’s just right for your average family home?
You may already have heard of the Worcester Bosch Greenstar 27i system boiler – and that’s probably how you found this blog!
And no wonder. It’s a great boiler that’s positioned right between the two bestselling system boilers on the market right now (the Greenstar 24i and 30i). This is a very popular boiler for the average-sized home, and Worcester Bosch is leading the market with fantastic, reliable and energy efficient system boilers.
But how will you know if the 27i is right for you? Well, as an experienced engineer, I’m going to try and help you out.
You see, there are some vital elements to consider when picking the right boiler for your home – including things like outputs, sizing and the guarantee you can expect. Let me explain more below – by the end of this article, you’ll have a better idea if the 27i is best suited to your home.
Introduction
As I’ve previously said, the most popular sizes for the average home are 24kW and 30kW. So, when Worcester Bosch introduced the 27kW smack bang in the middle, it really hit the mark. It’s more affordable than the 30kW, and only marginally more expensive than the 24kW.
So, in other words? There’s no need to think you only need 25kW so the 24kW should be okay. Or that the 30kW seems oversized. In some cases, the 27kW could be the ideal fit for your home.
And as for the brand, Worcester Bosch are at the very top of their game. I actually can’t remember the last time I fitted an alternative brand when a customer needed a regular or system boiler. I love how easy they are to fit and commission, plus they rarely need any further attention (aside from an annual service, that is!). You can just leave them to it.
This boiler can be an ideal choice if you’re looking to replace your old regular or system boiler, with an existing expansion tank. So, if upgrading from an old one-pipe system and need a more energy efficient boiler sounds good, the 27i could be the boiler for you.
Output and flow rate
This is the most vital thing you need to determine when working out which boiler is for you – which is why it’s a great starting point for this review. So, as the name suggests, the Greenstar 27i provides you with 27kW to your heating and hot water tank. This means it’s ideal for a home with around 8 – 10 radiators.
However, if your home is stone-built and has high ceilings or not a lot of insulation, you might still want to consider the 30kW. But fear not – if you’re not sure, your chosen engineer should be able to measure your home’s heat loss and advise you further. Just never undersize your boiler – you’ll regret it in the depths of winter.
Another thing they’ll need to check is your pipework, due to this being a high-efficiency boiler that must be fitted with a fully-pumped system.
As for the flow rate to your taps, you shouldn’t notice a difference – what with this being a system boiler and all. But you could, if you decided to fit it alongside a new unvented cylinder to give you an even better flow rate to your taps.
Size and special features
With a size of 690 x 390 x 280, the 27i is a compact boiler. So, it will happily fit inside a standard-sized kitchen cupboard – great if you’re looking to make the most of the space in your home.
Not forgetting, the 27i can also be combined with the brand’s own range of solar panels, and high-efficiency indirect or solar compatible Greenstore cylinders. Futureproof!
Guarantee
Onto the guarantee – this part is really important. The Worcester Bosch Greenstar 27i system boiler comes with Worcester Bosch’s fantastic no quibble 8-year boiler guarantee when installed by an accredited engineer and fitted with the brand’s own magnetic central heating filter. Unlike some brands, there’s no small print to catch you out, either!
This is one of the main reasons why Worcester Bosch has been voted Which’s ‘Best Buy’ for several years running – by homeowners and engineers alike!
Tech specs
Now, here’s a quick overview of all you need to know regarding the Worcester Bosch Greenstar 27i.
- Output: 27kW to heat radiators and hot water tank
- Ideal for: An average family home with 8 – 10 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
Does the Worcester Bosch Greenstar 27i seem like the right choice for you? If you’re in need of a reliable system boiler that won’t let you down, this boiler is a popular choice. However, I’d still advise getting 2 – 3 fixed price quotes to ensure you’re getting a good deal – along with the right boiler for your home.
A good engineer should measure your home’s heat loss and tell you the exact size you need. They can also help you decide on whether you need smart controls, or an unvented cylinder (for even better flow rates to your taps).
Do you have any other questions about the Worcester Bosch Greenstar 27i? Let me know in the comments’ section! I promise to reply.
