Our Certifications at Carefree Heating and Cooling, LLC Our team at Carefree Heating and Cooling, LLC in Hamilton strives to have the most comprehensive heating and cooling service around. One way we keep our expertise and continue to build knowledge about HVAC products is by earning industry certifications. Learn more about the certifications our experts have received below. Better Business Bureau Carefree Heating and Cooling, LLC is a member of the Better Business Bureau. That means we comply with ethical business behaviors and share trustworthy information with our customers. We have a strong rating and are proud to be part of this organization.