Our Certifications at Thornberry Bros Inc We’re dedicated to providing the Winchester community with the most responsive heating and cooling service in the area. To help us do this, we’ve gone through rigorous training to receive the industry certifications you see below. Learn more about our certifications here and give us a call at 859-745-1564 to speak directly with our representatives. Better Business Bureau Thornberry Bros Inc is a member of the Better Business Bureau, meaning we follow ethical business practices and share honest information with our customers. We have a strong rating and are proud to be part of this organization.