For those who are looking to reduce their bills and build up efficiency, indirect storage allows you to heat your water by using the same boiler you use to heat your home.
This system takes advantage of ready-to-use hot water. But instead of having its own heat source, indirect storage uses a closed circuit of tubes that pick up heat as they run through your boiler. This method is used to heat the water in the tank.
Indirect storage systems mean you don’t need to run a boiler or a hot water heater, thus reducing your overall costs. They use the efficiency of the main boiler, which can often be higher than a traditional hot water heater.