It’s a good system to keep your body tested by doing proper exercise and eating mostly healthy foods.
The same goes for your heating and cooling system, you should try to keep it clean and tested so that it can serve you well for a long time.
I don’t always eat healthy foods, but I would say that 85% of our diet consists of healthy fruits and vegetables and grains. I like to keep the A/C system cleaned on a proper basis so that it doesn’t lose its efficiency. I have a reminder on my phone telling me when it is time to wash it and it has worked entirely well because of that for several years. I know we can get another four years out of the central heating and a/c before we need to update it. I have been putting some money aside each month so that when the time comes we won’t have to go on a rice and beans diet to afford a new system. I live near the beach and the salt air does a number on the AC compressors, rusting them within a year or two of getting them installed. I like to rinse the component with fresh water from the garden hose to help slow down the rusting but it eventually happens and needs to be updated. Our air handler is still the same one from a couple of HVAC units ago and the local corporation told me it will need to be updated when we update the system next time. I trust his judgment as he has been our neighbor for a long time.