http://www.serviceonedubuque.com/ Call 563-556-0666 to save money on your utilty bill now. As Sales and Marketing Manager I make sure all Dubuque area commerical and residential clients have the best heating and cooling options available. Comfort is the key. ServiceOne is Dubuque, Iowa's leading provider of residential and commercial quality heating, air conditioning, plumbing, electrical and major appliance service and repair.