A good question for you agent. I have read that some companies don't cover work not paid for. I think the reason is some base the insurance price on the EC sales. Someone suggested in the past to charge something for this reason, such as $1.

Perhaps you should spell out your warrenty on parts and labor. Maybe the typical used car one "As-is, no warrenty". I'm sure you would make good on things if there was a problem, by why leave yourself open. An example would be damages resulting from a power outage (non utility). A basement floods, food spoil, emergency repair by other EC, etc. resulting from a defect in the electrical system can be costly. Just seems sometimes like the less you make the more things come back to bite you.