I was using a competitor of Diamond when I heard an ad about diamond.
The competitor had charged me $180.00 for something I didn't understand. Then told me I needed another service for another $180.
I called Diamond and read the work proposal and asked what they would charge. They said $100, but they would have to see it before committing. The technician came out and told me I didn't need the service at this time. He did a maintenance service and I have been with Diamond heating and air ever since. Trustworthy is the main word I would use to describe this company. I highly recommend them for all Heating and air conditioning needs.