We just had Airtech do a complete furnace and a/c unit replacement and install. They had a three person crew out and completed the project in 6-7 hours. Very professional and efficient. We were very pleased with process, from the point Kyle did our home audit to help us choose the proper furnace to the three man team that came out and did the install. They did a great job with the furnace, answered all my questions along the way and gave a very thorough walk through at the end to explain the new furnace, a/c, thermostat and ways for us to use them to get better energy efficiency. They even did the paperwork for us for our Xcel rebates. Looking forward to seeing some energy savings and have no problems recommending Airtech for your furnace a/o air condition purchase. Within a 1/2 hour of the job being done, I had a call from the main office making sure I was satisfied with the work done and if I had any questions or lingering issue. Definitely will use them again.