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Worcester Bosch Greenstar Ri
£2,289.00 - £2,964.00
MSRP:
We offer fast and reliable boiler installations within 48 hours.
Every one of our engineers are Gas-Safe Registered.
We cover every UK postcode.
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The Worcester Bosch Greenstar Ri is a compact and reliable heat-only boiler, ideal for small homes or apartments with a traditional heating and hot water system, including a hot water cylinder. Built with Worcester Bosch’s renowned engineering quality, it provides consistent heating performance and energy efficiency, helping homeowners reduce energy use without compromising comfort.
Backed by a 10-year parts and labour guarantee, the Greenstar Ri delivers long-term reassurance and durability. Its compact design makes it perfect for installation in tight spaces such as kitchen cupboards or utility areas. At the same time, its Quiet Mark certification ensures it runs smoothly and quietly in the background.
Recognised as one of the most reliable and efficient boilers in its class, the Worcester Bosch Ri is a popular choice for homeowners looking for trusted performance, energy savings, and dependable comfort. If you’re after a space-saving, efficient, and long-lasting heating solution, the Greenstar Ri is a fantastic option.
Local Installers on a National Network.
We cover every UK postcode.
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Buying a boiler for your home is one of the most important purchases you are going to make for your home and that’s why it is so important to get it right. A lower kW for this many radiators will not be able to reliably provide hot water to every part of your home.
Warmzilla was built by two gas safe engineers wanting to modernise buying a gas boiler.
This meant using our knowledge to ensure that you not only can buy a boiler online, but that it is the right one for your home.
When you buy a boiler from us, we ensure that it can heat every part of your home/you have hot water when you need, where you need it. That’s why you’re having this warning, to explain why we don’t allow our customers to buy an insufficient kW boiler for their home.
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Having too much power in your heating system isn’t good and can lead to higher bills. If your boiler is too big, it might create more heat than your system can use, causing it to work poorly.
When your boiler isn’t heating or providing hot water, it turns off. This means the water cools down. When you need it again, a big boiler will use more energy to heat the same amount of water that your home needs compared to a properly sized boiler. Our survey ensures you get the exact boiler you need.
A kilowatt (kW) is just a way to measure power, and 1 kilowatt equals 1,000 watts. When it comes to boilers, you’ll often see numbers like 12kW, 18kW, or even 32kW and 40kW—these tell you how much power the boiler can produce in a second.
The larger your home, the more powerful a boiler you’ll need. This is important because a more powerful boiler can deliver hot water to multiple taps or showers at the same time, plus provide more heat to a greater amount of radiators.
If you do not have a hot water cylinder and tanks in your attic then it is likely you have a combi.
A system boiler has a separate hot water storage cylinder but doesn’t require a cold water storage tank.
Regular boilers have a hot water tank (usually in an airing cupboard) and a cold water tank (usually in the loft).
This will look like an exhaust pipe which could either be out of your wall or your roof.
* Although we offer a selection here, relocating the boiler can sometimes mean changing where the flue exits.
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This boiler isn't compatible with your current boiler type. Take our survey to get perfect recommendations.
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