I had diamondback air out on Saturday and was told I needed a new fan installed. Since my hvac unit was actually still working we asked them to come back Friday morning so we could go run some errands that afternoon. They confirmed the technician would be back today at 6 am to install the fan and clean the condenser coils. The technician did not show up at 6am, so I waited 20 minutes to call the number on the website. When I called no one answered so I left a message. It is now 7am and still no technician and no call back. I do not recommend anyone use this company.