After purchasing a house, I found out that my brand new my air conditioning unit did not come on at a warm weather. As I did not own the home at the time the unit was installed I had to research a service provider until I notice Derrick Davidson's sticker on the furnace. I called them and spoke with Mary which was a very nice person to interact with. They accommodated my busy schedule and came to my home after my work hours. Upon arrival, Mr. Davidson recognized that the installation was performed by them and started to troubleshoot the problem. Not only was his investigative work thorough, he found the problem and fixed it in no time. And even more impressive, as he installed the unit, he did not charge me a penny even though I was not the initial buyer. I was totally shocked as I am more used to dealing with companies that will cease any opportunity to increase their bottom line... I recommend Darrick Davidson Mechanical Services LTD to everyone in need of new equipment or maintenance services. Their service is courteous, the staff is very friendly and their warranty and service is the best I have seen to date! Way to Go Darrick and thank you for your outstanding service and honesty.