At J.B Smith, we are proud of the years of service to the Cortland area and look forward to helping you with your air conditioning and heating needs. We are pleased to serve both residential and commercial customers; our team is prepared to help you with the sales, service and installation of the comfort system that is ideal for your home or business. And be sure to ask J.B Smith for a free estimate (for replacement only). Whether it's a new installation or routine service, our factory trained and Nate Certified technicians provide the expertise your comfort depends on. And at J.B Smith; we repair all makes and models.