Lee arrived exactly at the appointment time. This was the second annual tune-up service following a very satisfactory installation of this furnace by the same company. Lee is very personable and carried out the work swiftly and competently. In conversation during this process, he explained some emerging developments in furnace problem diagnostics which stand to change the entire process. He also offered advise on removal, should it be necessary, of the condensate pump. This was the second time Lee has performed this service, so we are becoming old friends. All in all, a satisfying experience. Highly recommended.