Upright Cylinder Boiler Small 137×320 Medium 273×640 Large 437×1024 Download Tiff Original 1024×2400 | (962.2 KB) Description An upright cylinder boiler is well suited for heating a small or moderate sized house. Keywords Boiler, upright cylinder boiler Galleries Heating and Cooling Source: Nicholson, George The Illustrated Dictionary of Gardening, Div. VI (London, England: L. Upcott Gill, 1884)