To keep your house cool and cozy as the summer draws near, it’s critical to check sure your air conditioner is operating at peak efficiency. The secret to making sure your air conditioner runs effectively and efficiently is to perform routine maintenance and repairs. There are numerous do-it-yourself maintenance and repair tasks you can do to keep your air conditioner in good working order, but professional HVAC professionals are available to help with more complicated problems. From basic maintenance and repair operations like cleaning and filter replacement to troubleshooting frequent issues, we’ll go over the fundamentals of do-it-yourself AC unit maintenance and repair in this guide.