Upon arrival I investigated a leak which was thought to be from a recently replaced expansion tank at this time I have found that this is an original Apollo unit that is now leaking internally at the cast tank, this unit has been capped off at the loop connections and HVAC has been updated so they will no longer require a loop heater. So I gave the customer multiple options and upfront pricing and they will let us know as soon as possible on getting the unit replaced due to the fact they just moved in Nick pleasants Durham,nc