Arrived on site customer stated that they had no hot water again, customer stated that when we left on Monday, they had hot water but when they went to take a shower, they had no hot water again. After taking the cover off the unit and inspecting the unit, we found that the syphon hose is leaking, MyGuy plumbing gave customer options to replace syphon hose, after installing syphon hose MyGuy plumbing ran hot water to ensure their are no leaks. At this time everything appears to be working as should no issues. Recommend install new siphon assembly as well. Will order part and contact home owner when we are coming back to install part, collected payment.