Questions about a combination system when it comes to water heaters? Wondering about the benefits and potential challenges of an indirect heating system over your standard tank system water heater set up?
First, some basic mechanics. A combination system combines a boiler with an indirect tank (same as a standard water heater but without the mechanism to power itself to heat the water.) The indirect tank contains a coil inside, which is hooked in a closed loop to the boiler. The boiler pumps hot water into the coil, which heats the water in the tank and presto! Hot water for your commercial application.
One advantage of this system is that you probably already have a boiler, which is pumping out heat for at least part of the year. This takes advantage of that already-hard-working piece of equipment. Indirect water heaters also tend to last longer which means less repair and replacement costs!
Consider, however, that the combination system requires your boiler to work in the off season too, burning energy and costing you money, – say in the summer when it would normally be dormant.