Lincoln California installation of swamp cooler. when unit was originally installed new unit had problems running due to electrical field interference of 54v through other side of electrical wiring when no wiring was hooked up this was not cut before new installation and caused original motor to burn electrical windings. installation technician run new wiring to the agreed amount of $450 still had problem had electrician come out and diagnose and try and fix problem still had problem. had lead service install technician came out. found problem determined it was caused by electrical field interference electrical power back feeding through insulated wiring inside of Romax line had to run independent electrical feed lines from switch to swap cooler to prevent electrical field interference. will not charge for the additional work just the original amount agreed upon at $450 no additional.