Prime HVAC works on air conditioning in Los Angeles, from ductless systems to ducts, vents, and portable units. One customer felt a real change in comfort within an hour after a ductless setup, and described the technicians as knowledgeable and friendly. Another had poor ceiling ventilation fixed with a new ventilated ceiling, and noted the attention to detail and clear communication after a bad experience with other contractors. A technician found a refrigerant leak that a previous company had missed, repaired it within an hour, and explained how to avoid the same problem. Duct and vent work that took about a day left the customer satisfied with the results so far, and a portable A/C was fixed efficiently.