I've been using Donald P. Dick Air Conditioning for four to five years now. They have done Title 24's for us, installed new units in my personal home and apartment complexes as well as rental houses. They have also done repairs on existing units. They do a good job for a great price. I don't ever have to worry about them or watch over them on the job. They're also very reputable. When inspectors know that Donald has done the work, they don't question them because their known for their quality. They're professional, courteous, informative, and downright incredible.