Siemer Heating & Cooling had done some work for me about 10 years ago. Recently I needed my furnace and air conditioning units replaced and I liked them from years ago so I called them to do this big job. The entire job was completed in about six hours! I never had to clean up after them at all and they hauled away both of the old systems. The new furnace and air conditioning are working out great for me! I believe they do very good work and I am very pleased with their customer service!