Len Thonus promptly replied to our initial call, asked questions based on photos we sent of old water heater, clearly explained proposed service, then offered options for dates of service when we decided to go ahead. His co-worker Kevin, friendly and professional, arrived exactly on time, removed the old heater and installed the new one within 2-3 hours, checked that everything was working properly, cleaned up the work area nicely and reviewed everything with me.