Village Plumbing went to Beverly Hills to see what was wrong with the temperature of the customers water. He was complaining that it took to long for the hot water to come out of the faucets. Village Plumbing, check to find that there was a timer left on. We turned off timer, water heater working fine. Village Plumbing went to Los Angeles, Customer had a toilet stoppage. In Pacific Palisades, Village Plumbing had to check out another tankless water heater. This time we have to order a heat exchanger. In Thousand Oaks, Village Plumbing had a Leak detection. We found that customer has a slab leak.