Upon arrival customer explained that they would like to have their Noritz tankless water heater serviced and descaled due to rust color in water. The unit was installed three years ago. Customer is on well water, explained that due to the water quality typically found in well systems it is recommended to descale unit. Well systems filtration was swapped 3-4 months ago. Provided estimates to customer to descale and service unit. Customer approved work. As part of the descaling we removed and cleaned air filter and water filter. As well as cleaned unit. All work was tested for leaks and proper function. There are no leaks and all work is functioning properly at this time.