Is there a health risk in combining Domestic Water with Hydronics?
A. No, the Plumbing commission of Victoria have undertaking several studies of combined hydronic and domestic water systems. As long as the domestic water is reheated above 60 degrees it is totally safe to use. The perfect temperature to run Hydronic Heating and your domestic hot water is 65 degrees Celsius. Tempering valves can be installed in bathrooms to temper water down to a desired temperature.