When thinking about the service industry (electrical, plumbing, etc.) what is a reasonable travel, or trip charge. I install and repair communications equipment (telephone, data, coax) mostly for small business' but also some residential and new construction. I do not charge travel within a 40 km (25 mile) radius, only the billable time (minimum 1hr). Now I am getting calls from further away. I do not want to turn them away but I can't justify traveling 1hr or more for free. As a customer (residential or business) what would you consider reasonable.