By avoiding these five common AC mistakes, any homeowner can enjoy a hassle-free, comfortable summer — and save some money in the process.

1. Size vs. Space
A larger air conditioner does not always provide better cooling. Improperly sized systems are less effective at removing humidity, waste a ton of energy, and can have trouble generating uniform temperatures throughout your home. Studies show that between one third and one half of home air conditioners don’t function properly because they are oversized. To ensure maximum efficiency, it is crucial to work with a professional to install a properly sized unit for your home’s square footage and layout.

2. Maintain and save.
Many homeowners fail to perform proper maintenance on their AC systems. To ensure maximum comfort and efficiency, filters should be changed once per month, and a full system clean-and-tune should be performed at least once per year by a trusted professional. Keep in mind, the best time to service an air conditioner is before a problem arises.

3. Location, location, location.
Homeowners may be tempted to place AC systems where it’s most aesthetically pleasing, but it’s much more sensible to choose a spot where the unit can function most effectively. Avoid placing your system in an area where it will be exposed to constant direct sunlight. Don’t try to hide the unit with shrubs and plants– though it may look pretty, the greenery can interfere with ventilation and clog condenser coils, decreasing efficiency and increasing energy bills.

By avoiding these common pitfalls, homeowners will help maintain comfortable indoor temperatures throughout the summer season, prevent system outages, and ensure maximum savings on their energy bills.