I have been and still am very impressed with the personnel that Bay Area A/C have. They are very professional and also through while checking your unit. They will share with you information on your unit, such as the estimated life your unit should have, any potential problems and estimates on a new unit. My unit is old and I know it will soon need to be replaced and when it does I will turn to Bay Area A/C. I've used them, I trust them and I will purchase from them.