As a Marine Veteran I am usually skeptical about who I have in my home and knowing that Ryan the service manager that came to look at my AC NEST thermostat was a Marine as well made me feel at ease knowing that I was not going to get all these extra problems that usually arise with other companies. Ryan made this process a learning experience and helped explain my system until I understood. I will definitely be using Semper Fi Cooling & heating for my future needs and recommend everyone to use their services. Thank you again Semper Fi