Service call. Customer states he believes there is a problem with his heat strips. Upon arrival i tested aux heat, system was not heating through strip heat. Checked all wiring, ohmed out heat strip coil, limit switches, everything is within spec. Found a couple loose dirty wires, cleaned and re crimped tested aux heat again with homeowner heat strips are working correctly. System is working correctly and efficiently at this time. Homeowner would like for us to reach back out at a later date for a ac tune up.