Our Certifications at Kelley Mechanical We’re committed to providing the Lexington community with the finest heating and cooling service possible. To ensure our expertise, we’ve gone through rigorous training to receive the industry certifications you see below. Discover more about our certifications here and give us a call at 859-209-3003 to speak directly with our representatives. Better Business Bureau Kelley Mechanical is a member of the Better Business Bureau. That means we abide by ethical business behaviors and share trustworthy information with our customers. We have a strong rating and are proud to be part of this organization.