Using a boiler in this system is more common. The reason for this is that some of the older models aren’t compatible with newer integrated HVAC systems.

Not all furnaces can be utilized in an indirect water heating system. This is then recycled back into the heat supply to continue the process. When this water travels back down to the storage tank, the cooler water surrounding it will take the heat away from the coils – condensing the steam back into a liquid. This process continues in a cycle.Īt the source of heat, the water in the system will turn to steam – as the temperatures here are seriously high. The fluid that passes through these coils is warmed up from the heat source and then cooled off in the water tank. This is achieved by connecting a series of heat transfer coils between the water tank and the boiler or furnace (source of heat). Instead, hot water is created through heat transfer using the home’s boiler or furnace. Indirect water heaters require a storage tank, although the tank does not actually heat the water. Only works well under specific conditions.Is part of an integrated heating system.Its tank does not contain any heating elements.Uses an external source (furnace or boiler) to heat the water.However, those that do can enjoy a number of advantages that come with this system, which we discuss later on in this article. It is important to understand that not all houses will suit one of these. This integrated system of using heat transfer in different components is becoming increasingly popular. Utilizing the space heating system for your water is called an integrated or combination heating system – as the two different units work together.īasically, an indirect system uses an external heat source instead of its own gas or electric heating elements. Instead, they will use the home’s space heating system (a furnace or boiler) to heat the water. Indirect models do not have any heating elements inside the water tank. This water heating system uses a tank to store water and an external heat source to warm it up. Advantages to Using an Indirect Water Heater.To summarise how this system works, it:.

60s water heater