Renowned for its industry-leading hot water flow rates, the Worcester Bosch Greenstar Highflow CDi Combi is a decent, highly efficient floor standing combination boiler.

Available in a heating output of 29kW and 30kW and with flow rates of 20 and 25 litres per minute respectively, this appliance is perfect if you have a high demand for hot water. Even though it’s a little large at 850mm (H) x 600mm (W) x 600 (D), it will fit under a kitchen worktop and won’t look out of place next to your other white goods.   

This beast of a boiler is suitable for large properties with multiple bathrooms, is priced between £2,053.68 and £2,447.70, and is backed by a lengthy 5-year warranty.

Boiler Energy Efficiency Credentials

With an overall efficiency rating of 93%, this floor standing combi boiler is a SEDBUK A-rated appliance that also happens to be recommended by the Energy Saving Trust. It can actually turn up to 90% of the fuel to heat and provide a high level of comfort whilst keeping gas consumption to a minimum. So, the Greenstar Highflow CDi Combi is an extremely energy efficient boiler that can not only help to save energy but also cut your bills. It‘s also compatible with a fantastic selection of Worcester Bosch wireless, digital and mechanical controls for greater efficiency and user comfort.

Greenstar Highflow CDi Combi Technology and Main Advantages

The Greenstar Highflow CDi Combi by Worcester Bosch includes built-in frost protection, which is good news if you plan to keep this boiler in your loft, garage or basement. It features an anti-cycle device to maintain your chosen heating and hot water temperatures, as well as simple to use controls and a clear temperature display.

Although it can’t be hung on a wall, it comes with many of the features that a wall-mounted boiler is usually supplied with, such as multi-directional flue options and built-in filling link. This means that this floor standing boiler can be sited virtually anywhere and will save time and money when it comes to maintenance and servicing. A floor mounting pre-plumbing jig is also included to keep installation tidy and quick.

This combi boiler has an electronic ignition to make life easy for the end-user, along with fault finding diagnostics to keep things simple for the engineer. If you wish, you can even attach a 24-hour or 7-day programmable room thermostat to allow you to set your heating to switch on and off at your chosen times of the day.

Is the Greenstar Highflow CDi Combi the Right Boiler Type and Size for Your Home?

Worcester Bosch’s Greenstar Highflow CDi Combi is ideal for homes where a floor standing boiler is already installed or a wall-mounted boiler isn’t an option. It’s also a great solution if your home doesn’t have enough space to store a hot water tank and cold water cylinder. Thanks to its amazing flow rates, its best suited to a large property with multiple bathrooms. In order to work out whether you need the 440CDi or 550CDi, we recommend you get in touch with a Gas Safe engineer and ask them to assess your typical heating and hot water usage habits.