Product code: S12441
Suitable for a range of project types and sizes, the Potterton Sirius Three 110 floor standing condensing boiler can be installed as part of a cascade system. It has modulation ratios of up to 9:8, a reliable stainless steel heat exchanger and the lowest NOx rating available. It's also ErP A-rated for energy efficiency and offers a gross seasonal efficiency of up to 97.5% for reduced fuel bills. Extremely compact, with castors attached, the Sirius Three makes installation easy in any location.