As temperatures climb, your air conditioner becomes essential for staying comfortable and safe. But before the peak heat sets in, it’s important to prepare your system to avoid breakdowns and ensure it runs efficiently all season long. A few simple steps now can save you from mid-summer malfunctions, costly repairs, and rising energy bills.

Whether you're using central air, a window unit, or one of today’s energy efficient air conditioners, here’s your ultimate pre-summer AC checklist to keep your home cool, your AC running smoothly, and your wallet happy.

✅ 1. Clean or Replace the Air Filter

One of the easiest and most important steps is checking your AC’s air filter. A dirty filter restricts airflow, forcing your system to work harder, which reduces efficiency and can lead to breakdowns.

• Tip: Replace or clean your filter every 30–60 days during heavy use.

• Why it matters: Improves air quality and energy efficiency.

✅ 2. Inspect and Clean Air Vents

Dust and debris can build up in your vents, reducing airflow and spreading allergens.

• Tip: Use a vacuum with a hose attachment or a microfiber cloth to clean all supply and return vents.

• Bonus: Make sure furniture isn’t blocking any vents for optimal air circulation.

✅ 3. Test the System Early

Don’t wait until the first heatwave to discover your AC isn’t working.

• Tip: Turn on your air conditioner in spring to test its cooling ability.

• Check: Is it blowing cold air? Are there unusual noises or smells?

  
  

Early testing gives you time to schedule any necessary repairs before demand spikes—and prices rise.

✅ 4. Check the Thermostat Settings

Make sure your thermostat is accurate and programmed for the warmer months.

• Tip: Set your thermostat to a comfortable temperature (around 76–78°F when home).

• Upgrade Idea: Smart thermostats can help regulate temperatures and reduce power usage.

  
  

This is an easy way to stay cool while learning how to keep your house cool in summer without overworking your AC.

✅ 5. Clean the Outdoor Unit (for Central AC)

If you have a central air system, the outdoor condenser unit needs a little TLC too.

• Tip: Remove debris like leaves, sticks, and dirt from around the unit.

• DIY Care: Gently hose off the coils (make sure the power is off first).

Keeping the unit clear ensures better airflow and heat exchange.

✅ 6. Check Window Seals (for Window Units)

If you’re using a window air conditioner, inspect the seals around the unit.

• Tip: Ensure no warm air is leaking in or cool air escaping.

• Fix: Add weather stripping or insulation foam as needed.

  
  

Proper sealing helps your energy efficient air conditioner perform its best.

✅ 7. Schedule a Professional Inspection

If your AC hasn’t been professionally serviced in the last year, now’s the time.

• Benefits: A technician can check refrigerant levels, inspect electrical components, and perform a full tune-up.

• Result: Avoid mid-summer malfunctions and maximize efficiency.

✅ 8. Upgrade if Needed

If your unit is over 10 years old or struggles to cool efficiently, it may be time to upgrade.

• Why upgrade? New energy efficient air conditioners use less energy, cool more effectively, and often include smart features for convenience and cost savings.

• Bonus Tip: Replacing your old unit now can prevent surprise breakdowns when you need it most.

Final Thoughts: Stay Cool, Save Money

Getting your AC summer-ready is all about being proactive. From replacing filters and testing performance to cleaning vents and checking your thermostat, a little maintenance now can prevent big problems later.

And if you’re considering an upgrade, look for energy efficient air conditioners that help reduce energy costs while keeping your space consistently cool. Knowing how to keep your house cool in summer starts with preparation—and your AC is the first line of defense.

So, grab this checklist and give your cooling system the care it deserves—before the summer heat hits full blast.