Choate offered the best price on what we wanted. They installed a new 4 ton Carrier unit with inside core. We had also installed new energy efficient windows on the west side of our house at the same time. What happened next blew me away. Our first full month utility bill dropped by 50 from the same time last year. These guys were on time, clean and did a great job. It was clear that they knew what they were doing. I highly recommend them.