+25 Indirect Water Heater Wiki Ideas. Passive heat source can be the ground (soil or groundwater), sun or air; An indirect water heater uses the main furnace or boiler to heat a fluid that's circulated through a heat exchanger in the storage tank.
Instead, heat transfer coils run between the tank and either a boiler or furnace. Uses an external source (furnace or boiler) to heat the water its tank does not contain any heating elements is part of an integrated heating system only works well under specific conditions how does the heater system work? These heaters are suitable for homes with a furnace and not for those with an hvac system.
