HVAC Repair and Maintenance How Weathervane Can Help You If you're looking for excellent service and a people-friendly approach, then you've come to the right place. At Weathervane Heating and Cooling, Inc., our ultimate goal is to serve you and make your experience a pleasant one. We are located in Howell Michigan and serve the local area. We service all your needs including, but not limited to air conditioning units, home furnaces, boilers and HVAC repair.