Worcester achieves an A+ for efficiency

Worcester achieves an A+ for efficiency

Leading boiler manufacturer, Worcester, Bosch Group, has announced that installers can now achieve an A+ energy efficiency rating under the forthcoming ErP Directive when fitting either a Greenstar i, Greenstar Si or CDi Compact combi boiler in conjunction with a Wave intelligent thermostat.

In line with the European Commission’s decision to award an uplift of 4% in efficiency for the addition of combined weather and load compensation control to a system, it is now much easier for plumbing and heating professionals to reach the 98% efficiency level required for an A+ rated system, without the need to install renewable technologies.

As each of Worcester’s Greenstar i, Si and CDi Compact combi boilers already has A-rated status, with guaranteed efficiency levels of 94%, the simple addition of a Wave Internet-connected Smart Thermostat provides the necessary 4% increase in efficiency installers need to attain A+ status.

Martyn Bridges, Director of Marketing and Technical Support at Worcester, Bosch Group, said: “Ordinarily, to achieve an A+ rated heating system, an installer would have to specify a boiler, a control, a 400 litre thermal cylinder as well as 4m2 solar thermal panels. With Worcester, all installers need is a boiler and a Wave thermostat, which not only makes the job a lot easier and helps reduce installation time but also makes better financial sense for homeowners.”

For more information about Worcester’s range of Greenstar boilers and weather and load compensating controls, visit

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