We Do The Job Right The First Time. Dan's Heating and Air provides heating and cooling service, repair and replacement to the Vassar, Kansas area. Our goal is to provide the best heating and air service in Osage County and to continue to build loyalty amongst our clients. Given our vast knowledge and experience, there is no job we can't handle. We always work hard to find the right solution to every challenge you might have. Services include: • 24-Hour Service • Sales • HVAC installation • HVAC service and repair • Maintenance agreements • Rebates • Financing through FTL At Dan’s Heating and Air, we put our customers first. We are more than happy to accommodate you in any way. We strive to be very efficient and professional in every job, in order to save you time and money. We are not satisfied unless you are. Call us if you're too hot, too cold or just right and want to keep it that way!