If an AC repair is merely a once in a blue moon affair for you and your business, then perhaps you have done alright. You have a housekeeping and risk management plan in place. This explains why things like AC repair is not so regular. Ac repair Walnut Creek work should only be happening out of extreme necessity. The maintenance work that forms part of the above said housekeeping and risk management work should have taken care of that.
After maintenance work has been done, the maintenance technician will have found areas of the air conditioning unit that are approaching its sell-by date. It is just about time for the parts and components to be replaced. The maintenance work will have detected the early warning signs. This is a lot better than letting your AC unit fall apart and collapse quite suddenly, leaving you with nothing and perhaps even everyone gasping for air.
If you have been an established property owner for many years and you have kept to the same infrastructure all these years, that in itself is no bad thing. You would have done alright with the maintenance but then there is the other matter of older installations always appearing to last a lot longer than the newer replacements. Now, while this still happens, there are better and more sustainable units entering the market and for those who choose to take benefit from them.
It is inevitable that older units, no matter how well they have worked for you all these years, will eventually break down and need to be replaced. The same technician that saw to your maintenance and repairs could now be advising you on the new installation choices, and maybe even, he will be doing the installation himself.