The store will not work correctly in the case when cookies are disabled.
Cookie Policy
We use cookies to give you the best experience on our website. These cookies are safe, secure and
do not contain any sensitive personal information. They are used only by Carboclass Ltd or our
trusted partners. If you continue to use this site, we will assume that you are happy with our
use of these cookies. More details are held in our Privacy Policy.
The Worcester Greenstar 21Ri Regular boiler is a highly reliable condensing regular gas boiler that is ideal for homes with 10-15 radiators and 1-2 bathrooms. Regular boilers directly heat the central heating system and also produce hot water for a cylinder. As a hot water cylinder is needed, often fed by a cold water storage cistern in the attic, regular boilers aren’t suitable for smaller properties.