The GC144 Series gas boiler requires very little space - but don't let its compact size fool you. This boiler has the quality and features you expect from Buderus. The precision castings are made using the patented Buderus GL180M cast iron, an extremely robust and durable material that can be shaped for perfect heat flow patterns. The stainless steel atmospheric premix gas burner ensures precise premixing for excellent energy utilization. All GC144 boilers are CSA approved for installation on combustible floors, have electronic ignition and can be installed in elevations up to 8500 ft. The slim profile and convenient side piping are designed for quick and easy installation - especially as a replacement boiler. All GC144 models feature the AquaSmart control with the HeatManager function to adjust the water temperature based on heating demand for additional fuel savings.