Water Heater Flue Size Calculator
Water Heater Flue Size Calculator Flue Size Calculator Water Heater BTU Rating: Calculate Flue Diameter Recommended Flue Diameter (inches): 0 FAQs How do I know what size flue I need? The size of the flue you need depends on the type of appliance you are venting, the fuel used, and the manufacturer’s recommendations. Generally, flue … Read more