Install tankless by code so it works

Install tankless water heater by the code so it works. This is one of Rinnai tankless water heater redoing. Almost 99% cases of system rebuild are done because of wrong installation. For common eye the before photo does not tell much, but "professionals" should know better! This unit had improper size of a gas line that failed under ground, improper power supply ( no kill switch, no GFCI), PEX pipe exposed to UV, service valve installed up side down etc...This lead even to the shutting of the Gas supply to entire house by PG&E. Call us so you get installation by the code first time!