Upon arrival I was pointed to the master bathroom shower where the shower cartridge had failed. The customer also had a shower head they wanted installed. While doing a safety inspection of the homes water system we discovered a failed vacuum breaker and a 10 year-old water heater. After providing options and upon approval, we replaced the shower cartridge and the shower head as well as the failed vacuum breaker. We are leaving options for replacement of the water heater due to age. Tested everything for leaks and proper function no further issues at this time.