Few people like to spend money and not be able to see immediate results from it. You buy groceries and see that the pantry is filled. You buy new car tires and stop sooner on the snow. It’s satisfying to spend the money and benefit immediately.
But when it comes to maintenance, whether it’s getting your car an oil change or having someone perform furnace maintenance, it’s the long-term benefits that you have to look at. And it’s not something you want to skip.
Everything breaks down eventually. In order for mechanical devices to work, there’s going to be some level of friction that’s not only wearing away at the pieces but also causing temperature spikes that weaken the molecules in the parts. For air conditioning units, the stresses put on them by being outdoors can also cause them to wear prematurely. For heating units, cold Maryland winters can cause them to turn on multiple times an hour, putting stress on both their electronic and physical components.