Expansion tank for domestic hot water heater Drained, domestic hot water heater removed defective expansion tank and replaced with new expansion tank or safety concerns strapped to three-quarter inch copper pipe which expansion tank is connected to strap it to the ceiling rafters View visual findings from this job here - https://visionshare.xoi.io/?id=XA-15F7-6ED38C8A80CE4A69AD65DA29780A95AE