Tankless water heaters, also known as on-demand water heaters, have become a popular choice for homeowners in Surrey, BC, thanks to their energy efficiency, space-saving design, and endless hot water supply. Unlike traditional tank heaters, which store and constantly heat water, tankless models heat water instantly as it flows through the unit, slashing energy costs by up to 30%. However, like any appliance, they can encounter issues that disrupt your comfort. Whether it’s a lack of hot water, fluctuating temperatures, or strange noises, knowing how to address tankless water heater problems—and when to call a professional—can save you time, money, and frustration. This guide explores common tankless water heater issues in Surrey, repair tips, and why timely maintenance is key to keeping your system running smoothly.