The HY-C Company's Heat Reclaimers help reclaim up to 30% of lost heat from any heating appliance and distribute it into your home. It is designed for use with all types of heating equipment with inside flue temperatures exceeding 350 degrees and skin temperatures of 250 degrees. This heat reclaimer made by HY-C has a built in soot scraper that allows the user to maximize any heat transfers. They are available in an oil, wood, and gas based furnace type with 6", 7", and 8" pipe diameters available for all of them. HY-C's Heat Reclaimers weigh about 30 pounds and has a minimum BTU of 8,000 and maximum BTU of 30,000.