HVAC work requires skill, so when you need a new part or system installed, repaired, or maintained, let Advantage Air Heating & Cooling handle the task from start to finish. We are a new local business, formally Coss Heating, but our employees have over 15 years of experience in the industry. We offer a variety of services such as:

Gas-forced air furnaces, central air conditioning, mini split systems, boilers (gas or electric), commercial refrigeration, In-floor heat, fin tube heating, chimney liners, fireplace (gas), fireplace inserts, and garage heaters. We offer a variety of conversions from oil to natural gas, propane to natural gas and many more. Give us a call to schedule your free estimate!


Advantage Air Heating and Cooling started as a passionate business that wanted to ensure home comfort was easily accessible to everyone in the Superior WI and Duluth MN area. Owned by Joe Ligman and his family. The way we make sure our family is warm in winter and cool in summer has been what we’ve been providing to our customers in the Douglas County WI and St. Louis County MN areas for more than three decades. We know what it means to take care of family, and we’re here to help you take care of yours.