Polar Furnace Mfg. Inc. is a trusted manufacturer of hydronic furnaces for homes, cottages, farms, and businesses. Our furnaces provide domestic hot water and heat pools, spas, hot tubs, and other applications. With a commitment to quality, we design and manufacture our products to be simple and easy to use, using only the highest quality materials and components. Our furnaces are carefully crafted to provide reliable and efficient heat for your specific needs. With hundreds of Polar Furnace heaters installed across the USA and Canada, we are a trusted name in the industry.