When your central heating and air conditioning system is having issues and you are unsure if it is on its way out, the best thing to do is to call your local heating and air conditioning company to send out a certified heat and a/c specialist to have a look at it.
Just sitting on it until the central heating and cooling system finally breaks down is not a good idea by any means.
Not only could it mean a total new central heat and a/c unit will be needed, but also it could cost you more in heating and air conditioning repairs. This is why if you catch something early enough, your friendly and very helpful local heating and cooling specialist can work on it and fix the problem a lot cheaper than if they had to repair a completely broken down central heating and air conditioning system unit. I learned this the hard way the last time my HVAC system was acting up. I did nothing and then when it finally broke, it cost me a lot of money in heating and cooling repairs. The tip my friendly and very helpful heating and air conditioning specialist gave me was to call them when it first starts acting up. He was the one that even confirmed that it would have saved me hundreds of dollars had I done that in the first place. So now I know that is what I will do in the future moving forward. And this is why I am telling every single last one of you reading this to do the same as well.