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Product code: S12445
Image shown for illustration purposes only.
View Large ImageThe compact Potterton Sirius Three 250 floor standing condensing boiler is designed for flexibility, suitable for a whole range of projects of various sizes as a standalone unit or as part of a cascade installation. The Sirius Three has modulation ratios of up to 9:8, a robust stainless steel heat exchanger and an extremely low NOx rating as well as a gross seasonal efficiency of up to 97.5% and ErP A rating. Fitted with castors, this boiler unit is easy and stress-free to install.