Plumbing upgrades involve improving or replacing existing plumbing systems to enhance efficiency, safety, and functionality. Common upgrades include installing modern fixtures, such as low-flow toilets and faucets, which conserve water and reduce utility bills. Additionally, upgrading pipes from copper or PVC to more durable materials like PEX can prevent leaks and improve water quality. Another aspect of plumbing upgrades is the installation of advanced systems, such as tankless water heaters that provide hot water on demand, saving space and energy. Regular maintenance and upgrades can also prevent costly repairs and extend the lifespan of plumbing systems, ensuring a reliable water supply.