The Dunkirk WPSB Series 4 gas boiler is available in 7 sizes and an AFUE of up to 84.1%.
The WPSB features an advanced Fuel Smart Hydrostat 3-in-1 Control:
The WPSB features an Integral Draft Hood and Vent Damper, reducing the overall height and making the unit ideal for low clearance/space limited installations.
The compact footprint and Cast to Last, 20-Year Non-Prorated Limited Warranty make the WPSB an excellent choice for residential applications.