Extremely professional and courteous throughout every stage of the process, from the time I received the quote to when the installation was completed. They discussed and clearly explained every aspect of the project and offered a very reasonable quote for all the work, compared to other installers. Justin, the project manager, was extremely accommodating and helpful in explaining all the work that would be done and scheduling the installation date. Adam and Dan, the installers, did an amazing job with the installation. They were punctual, courteous, professional, and efficient in heir work. They cleaned up all the areas where the work was done. After completing the work, they were amazingly kind and patient in answering all my questions about the system and provided helpful tips for efficiently running the HVAC system. Based on my experience, I would recommend Burkholder’s to everyone without any reservations for HVAC work in the Lehigh Valley area.