Window-ology treated me professionally, and they were knowledgeable about their products. They were available to me as a customer both in-person and by phone. They came on time, and when they said they would. They did not leave any sort of mess for me, and they cleaned up completely after they were done. They had to redo one of the products, and they informed me of what the problem was, what needed to be replaced, how, and when. They did everything as promised.