At Keller Equipment Sales we work with contractors, engineers, architects and business owners to provide the right HVAC systems for their specific applications and project needs, always with a high level of response and service. Customers across Philadelphia, Central Pennsylvania, Delaware and South Jersey turn to us not only for the diverse range of products we sell, but also for our expertise in the design and application of each and every product. For nearly 30 years, our team of field experts and engineers have helped achieve your efficiency, energy and project goals.