Hotwater delivered through outlet at tank top. Cold water enters through dip tube to tank bottom. Continuous heating cycles to compensate for standby loss.Tankless Maintenance (Critical). Annual descaling: essential in Toronto’s hard water. When you choose a Torontohotwatertank rental, maintenance and repairs are typically included in your monthly rental fee. This means you won’t have to worry about unexpected expenses or finding a reliable technician to fix any issues. Why Professional Water Heater Maintenanceis Important. You might wonder what regularmaintenance involves. This guide from Absolute Airflow is here to answer all of your questions. Even the most reliable water heaters need regular service to stay in peak condition.Preventative maintenanceis a smart way to protect your investment and avoid unexpected disruptions to your home’s hotwater supply. Your hotwater system is another vital component of your home that requires regularmaintenance. Over time, sediment can build up in your hotwatertank, reducing its efficiency and lifespan. A plumber can perform routine checks to: Flush out sediment to improve water quality. Hotwatertanks are designed to hold water for years and years, but flushing them should be part of your regular home maintenance schedule. The sediment that will build up over time can potentially make it harder for your hotwatertank to do its job.