We have been an A-1 Guaranteed customer for six years. We have been very satisfied with their work and service plans. Our past furnace service was done by a technician named Jacob. He was very courteous, knowledgeable and professional. Once the work was completed, he thoroughly reviewed his service report. He was by far the best in taking the time to walk me through his findings by showing me pictures of the very items associated with the report. In a way, this gave me an understanding of what’s going in our attic. If possible, we will try a by-request to have him perform maintenance/service next year. Scheduling is very flexible and easy. Thank you A-1 Guaranteed!