The Most Common HVAC Components That You Should Replace

Replacing household items can be a pain, especially when it’s something complex, such as your HVAC system. However, if you know what you need to replace, you can avoid expensive repairs down the line. With this in mind, here are the most common HVAC components that you should replace so that you’ll have a functioning AC when it gets hot this summer.

Photo by Tatiana Syrikova on

Air Filter

One thing you can replace without any extra help is the air filter in your HVAC system. This object collects all the dust, dirt, and other particles in your home’s indoor air. You should replace it every three to six months, but if you have a reusable air filter, then you just need to thoroughly clean it off. 

When the air filter gets clogged, it can lead to big problems, such as higher energy bills and more germs in your home. It can even damage your HVAC system if it’s causing your system to overheat. At that point, you would need to spend money on repairing the entire system, but you would also need a full duct cleaning


This is the most expensive component in your HVAC system. Its purpose is to compress the refrigerant that helps your system heat or cool your home. You’ll probably want to replace your compressor if your system is eight years or older. Replacing this part might be costly, but it’s much cheaper than purchasing an entire system. 

Capacitor and Contactor

A capacitor gives your system the electricity it needs to run. You might want to have an HVAC repair technician look at the start capacitor and the run capacitor. As you can probably guess, the start capacitor provides electricity for your system to begin functioning, while the run capacitor provides continuous electricity when your system operates. 

You might also want your technician to look at the contactor, which controls the flow of electrical current that comes in from the capacitors. Thankfully, this component is cheaper to replace than the compressor. 

Overall, having a functioning HVAC system is one way to ensure your home will be comfy this summer. Now that you know some of the most common HVAC components that you should replace, you can reach out to someone to make your system as good as new. 

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