To remove a water heater nozzle, start by shutting off the water supply and power to the unit. Drain residual water using a hose. Loosen the nozzle fitting with pliers or a pipe wrench, then gently twist and pull it off. Apply Teflon tape to the threads of a replacement nozzle before reattaching it. Always test for leaks after reassembly.

Proper nozzle removal is critical to prevent leaks and ensure efficient water flow. The U.S. Department of Energy (DOE) reports that 14-18% of household energy costs stem from water heating, making maintenance vital for cost savings. Leaky nozzles can waste 10-20 gallons of water daily, contributing to higher utility bills and water waste. According to the Environmental Protection Agency (EPA), fixing minor plumbing leaks can reduce water waste by 10%, saving the average household up to $100 annually. Additionally, sediment buildup around the nozzle—common in hard water areas—can reduce heating efficiency by 15%, as noted by Energy Star. The American Water Works Association (AWWA) emphasizes that loose or corroded nozzles increase the risk of thermal expansion damage, potentially leading to $500+ in repair costs. Using Teflon tape, as recommended by the National Association of Home Builders, ensures a watertight seal, preventing corrosion and extending nozzle lifespan. Neglecting this step may result in 30% higher energy consumption, per DOE data. Regular nozzle maintenance aligns with the DOE’s 2021 guidelines for optimizing home energy systems, reducing carbon footprints, and maintaining compliance with local building codes.