A gas water heater that isn’t functioning properly could have issues like sediment buildup, a failing burner, or worn-out components. While flushing the tank is a good first step, persistent problems usually require professional intervention. A plumber can assess whether repairs will solve the issue or if a replacement is more cost-effective. For reliable solutions, check out replace the old tankless water heater with Ben's Plumbing. Their team can inspect your heater, fix any issues, or guide you through choosing and installing a new unit, ensuring efficient hot water for your home.