Is there an monitor I can hook up to an electrical outlet to see if there is interference or static in the lines? I have a washer that has sensors that go off about six hours after I wash a load.

Buy a Square-D whole house surge suppressor and install it in the breaker box. That will prevent any surges that will destroy electronics. Put both power wires on each leg of a 220 volt 2-pole breaker and the ground wire to the grounding bar. Check all screws on all breakers and tighten them as much as you can, and then check all outlets to make sure the screws are tight. They loosen up over time and will cause a fire along with arcing which the circuit board on your machine will detect.