Called for service and asked if they work on mobile homes. Answer, yes. Scheduled service . When here they said they could not work on the type of switches and plug ins that are in a mobile home. They could however up grade to a better switch and plug ins. To fix my problem and up date the switches in the circuit would be 1577.75. If they did not do that the problem would recur down the road. to update the whole house would be around 3100.00. To fix problem 365.00. My point is, they should have told me at time of service call,if mobile home has certain type switches, they would have to upgrade in order to work on them. Not try and sell me after fact of diagnoses of problem. I think this review gives you some idea of how they operate. They however very good in what they do. I will not use them again if I have a need.