Before You Turn On Your AC: 6 Must-Do Summer Prep Tips

Spring Is the Best Time to Prepare…

since your AC sits unused for months during winter.

Waiting until the first heatwave—when you actually need it—can be too late.
Small issues (worn part, clogged filter) may not seem urgent now, but they can turn into bigger, and more expensive problems once your system is running daily.

A little prep now =  fewer repairs, more comfort, and lower energy costs.

Start with the basics

1. Change your air filter
   A clean filter improves airflow and reduces strain on your system.
   Dirty filters can increase energy use by 5–15%, so check them monthly during the cooling season.
2. Clean and clear the outdoor unit
   Remove leaves, dirt, and overgrowth around the unit. Give it space to run.
   Gently clean the fins (with power off) to keep airflow unrestricted.
3. Check your thermostat
   Make sure it’s working and set to cooling mode.
   If you have an older unit, upgrading to a smart thermostat can help reduce energy use and improve control.
4. Open and clear indoor vents
   Blocked or dusty vents restrict airflow and make it harder to cool your home evenly.
5. Seal Air Leaks Around Your Home
   Cool air escaping wastes money.
   Check around windows, doors, and ductwork for gaps. Sealing leaks with caulk or weatherstripping can improve efficiency and reduce energy costs—sometimes by up to 20%.
6. Fix Airflow Issues
   If some rooms feel warmer than others or your system runs longer than usual, airflow may be the problem.
   Common causes include:Dirty filters
   Blocked vents
   Leaky or disconnected ductworkEven if your AC is running, poor airflow forces it to work harder and reduces overall comfort.

Other Tips: 

1. Don’t Ignore Early Warning Signs!
   Your system usually gives hints before something fails: weak airflow, warm air, unusual noises
   Address issues early -before they turn into a mid-summer breakdown.
2. Schedule a Tune-Up
   Like taxes, the best time to service your AC is before peak season.
   It catches small issues early, improves efficiency and reduces the risk of breakdowns.
   A tune-up or PM includes a cleaning, inspection, and performance testing. Waiting until summer can mean longer wait times and limited availability.

Bottom Line

Your AC isn’t built to instantly cool down a hot house– it’s built to maintain comfort.
Give it good airflow, proper maintenance, and realistic settings, and it’ll perform when you need it most.
A little prep in spring means a more comfortable summer.