The Essential Pre-Summer AC Maintenance Checklist
Mar 14, 2025

Florida’s heat can push your air conditioning system to the limit. As summer approaches, ensuring your AC is in top shape isn’t just about comfort—it’s about preventing costly breakdowns when you need cooling the most. Neglecting your AC system before the summer heat sets in can lead to inefficiency, higher energy bills, and unexpected system failures. A little preparation now can make a big difference in how well your AC performs when temperatures soar. If your system is outdated or struggling, now is also a great time to consider air conditioning replacement to ensure reliable cooling all summer long. Here’s your essential pre-summer AC maintenance checklist to keep your system running smoothly all season long.
Checklist item #1
Check and Replace Your Air Filters
Dirty air filters restrict airflow, forcing your AC to work harder. This leads to higher energy bills and increased wear on the system. When airflow is blocked, your AC struggles to circulate cool air efficiently, which can make your home feel warmer than it should. Replacing your filters every 1-3 months improves efficiency and air quality, ensuring you get the most out of your cooling system. If you have pets or live in an area with high pollen levels, you may need to change filters more frequently to maintain optimal performance. If you notice persistent airflow issues despite regular filter changes, it could indicate a larger problem that requires air conditioning repair.
What Type of Filter Should You Use?
Not all air filters are created equal. Higher MERV-rated filters trap more dust and allergens but may reduce airflow if your system isn’t designed for them. If you suffer from allergies or want to improve indoor air quality, consider upgrading to a HEPA or electrostatic filter.

Checklist item #2
Inspect Refrigerant Levels
Low refrigerant levels can cause your AC to blow warm air and struggle to keep up with Florida’s heat. Refrigerant is essential for cooling, and if your levels are too low, it could indicate a leak in the system. If your system isn’t cooling properly, a professional check can identify leaks or low refrigerant before summer hits. Running an AC system with insufficient refrigerant can also cause additional stress on the compressor, leading to costly repairs down the line. If your system is frequently losing refrigerant, it may be time for a full air conditioning installation to avoid ongoing issues.
How to Spot Refrigerant Issues
Signs of low refrigerant include ice buildup on the coils, hissing sounds from the unit, and extended cooling cycles. If you notice any of these, call a professional to assess the situation before temperatures peak.
Checklist item #3
Clean the Condenser Coils
Outdoor condenser coils accumulate dirt, dust, and debris over time. A clogged coil reduces efficiency and can lead to overheating. The buildup of grime on your coils forces your system to work harder, which not only shortens its lifespan but also increases your cooling costs. Clearing away debris and scheduling a professional cleaning helps your AC perform at its best, ensuring your home stays cool even during the hottest summer days.
DIY vs. Professional Cleaning
While you can rinse off debris with a hose, deeper cleanings require professional tools and expertise. If your coils haven’t been cleaned in over a year, it’s worth scheduling a service appointment.

Checklist item #4
Test Your Thermostat
A faulty thermostat can cause temperature inconsistencies and higher energy usage. If your thermostat isn’t reading temperatures accurately, your AC might run longer than necessary or fail to reach your desired comfort level. Before the summer rush, test your thermostat to ensure accurate readings and consider upgrading to a smart thermostat for better efficiency. A smart thermostat can learn your schedule and adjust cooling levels accordingly, helping you save money on energy bills.
Checklist item #5
Inspect Ductwork for Leaks
Leaky ducts let cooled air escape before it reaches your living spaces, making your AC work harder. This not only reduces efficiency but also leads to uneven cooling throughout your home. If certain rooms always feel warmer than others, duct leaks may be to blame. Sealing leaks improves efficiency and keeps your home cooler without wasting energy. It’s worth having a professional inspect your ductwork to ensure your system isn’t losing air through gaps or holes. If your ducts are severely damaged or outdated, a new HVAC installation may be the best solution for improved performance.
Checklist item #6
Clear the Drain Line
Your AC’s drain line removes condensation, but it can become clogged with mold and algae, leading to water backups. A blocked drain can cause water damage and system malfunctions, resulting in unnecessary repair costs. Flushing it out regularly prevents buildup and ensures your system runs smoothly. A simple vinegar solution can help keep your drain line clear and free from debris.
Checklist item #7
Listen for Unusual Noises
Strange sounds like rattling, hissing, or grinding could indicate loose parts, refrigerant leaks, or motor issues. Ignoring these sounds can lead to more serious damage over time. If you hear anything unusual, it’s best to have a technician inspect your system before a minor issue turns into a major repair. Catching these problems early can prevent costly breakdowns later. If ongoing issues arise, scheduling a professional HVAC repair can help extend the life of your system.

Checklist item #8
Schedule a Professional Tune-Up
Regular AC maintenance keeps your system running efficiently and extends its lifespan. A professional technician can check for potential issues, clean components, and ensure everything is in working order before summer arrives. Routine maintenance also helps prevent unexpected breakdowns, giving you peace of mind when the temperature rises. Many HVAC companies offer seasonal tune-up specials, making it easy to get your system serviced before the summer heat takes its toll.
Checklist item #9
Ensure Proper Airflow Around the Outdoor Unit
Overgrown plants, debris, or objects near your AC unit can restrict airflow and reduce performance. Your outdoor condenser needs space to release heat efficiently. Keeping a 2-3 foot clearance around your condenser allows proper ventilation and prevents overheating. Trim back any plants, remove obstructions, and check that the area around your AC is free of clutter to ensure optimal performance.
Checklist item #10
Test Your System Before the First Heat Wave
Turn on your AC before temperatures soar to make sure everything is working properly. Many homeowners wait until the first heatwave to turn on their AC, only to find out it isn’t cooling efficiently. Testing your system early allows you to address any issues before you’re stuck in the heat. If you notice weak airflow, warm air, or unusual cycling patterns, it’s time to call in a professional to diagnose the problem.
Need a Professional AC Tune-Up?
Our expert team is ready to ensure your air conditioning system is prepared for Florida’s summer heat. Don’t wait until the hottest days of the year to find out your AC isn’t working properly. Whether you need a routine tune-up, a full air conditioning installation, or emergency air conditioning repair, we’ve got you covered. Schedule a maintenance check today and stay cool all season.