Product code: S12443
The Potterton Sirius Three 150 floor standing condensing boiler is suitable for all kinds of projects and can be installed as part of a cascade. The Sirius Three offers modulation ratios of up to 9:8, a reliable stainless steel heat exchanger and the lowest NOx rating available. It also helps save on running costs with an ErP A rating and a gross seasonal efficiency of up to 97.5%. Compact and fitted with castors, this boiler promises the easiest possible installation.