AC Maintenance Checklist: Keep Your System Running All Year

In South Florida, your air conditioner isn't a seasonal luxury — it's a year-round necessity. With temperatures regularly climbing into the 90s and humidity that never seems to quit, your AC works harder here than almost anywhere else in the country. That means regular maintenance isn't optional; it's the difference between a system that lasts 15 years and one that fails at 8.

Here's the complete maintenance checklist we use at Florida Air Services — the same steps our technicians follow on every tune-up visit.

This is the single most impactful thing you can do for your AC. A clogged filter restricts airflow, forces your system to work harder, and can cause the evaporator coil to freeze.

• Check your filter every 30 days
• Replace 1-inch filters every 30–60 days in South Florida (more often if you have pets)
• Upgrade to a MERV 8–11 filter for better air quality without restricting airflow

Florida's humidity means your AC pulls a lot of moisture from the air — up to 20 gallons per day in peak summer. That water drains through a condensate line, and algae loves to grow in it.

• Pour a cup of diluted bleach (1 part bleach, 16 parts water) down the drain line monthly
• Check that water is flowing freely from the outdoor drain
• If you notice water pooling near your air handler, the line may be clogged

Your condenser needs at least 2 feet of clearance on all sides to breathe properly.

• Remove leaves, grass clippings, and debris
• Trim back any shrubs or plants that have grown close
• Never stack items against the unit

Dirty condenser coils can reduce your system's efficiency by 30% or more. You can do a basic cleaning yourself:

1. Turn off power to the unit at the disconnect box
2. Use a garden hose to gently rinse the coils from the inside out
3. Never use a pressure washer — it can bend the delicate fins
4. Let the unit dry before restoring power

• Verify the temperature reading is accurate
• Test both cooling and fan modes
• If you have a programmable thermostat, confirm the schedule is set correctly for the season
• Consider upgrading to a smart thermostat — it can reduce cooling costs by 10–15%

Leaky ducts can waste 20–30% of the air your system produces. Walk through your attic or crawl space and look for:

• Disconnected sections
• Visible gaps at joints
• Insulation that's fallen away from ducts

Some tasks require a licensed HVAC technician. Schedule a professional tune-up once a year — ideally in early spring before the brutal South Florida summer hits.

Electrical system check:

• Measure voltage and amperage on all motors
• Tighten electrical connections
• Inspect capacitors and contactors for wear

Refrigerant check:

• Measure refrigerant levels and pressure
• Check for leaks
• Add refrigerant if needed (low refrigerant is always a sign of a leak — it doesn't just "run out")

Coil cleaning:

• Deep clean evaporator coils with professional-grade coil cleaner
• Clean condenser coils thoroughly

Blower and motor inspection:

• Check blower wheel for buildup
• Lubricate motor bearings
• Measure airflow across the evaporator

Drain system service:

• Flush the condensate drain line
• Check the float switch (this shuts off your system if the drain pan overflows)

Call us immediately if you notice:

• Warm air blowing from your vents when the AC is running
• Ice forming on the refrigerant lines or evaporator coil
• Unusual noises — grinding, squealing, or banging
• Water pooling around your indoor air handler
• Significantly higher electric bills without a change in usage
• Musty or burning smells coming from the vents

We see it every summer: homeowners who skipped their annual tune-up calling us in July when their system fails during a heat wave. Emergency service calls cost more, parts take longer to source, and in extreme heat, a failed AC can become a health emergency.

A typical tune-up costs $89–$150. A compressor replacement costs $1,200–$2,500. The math is simple.

We've been keeping South Florida homes cool since 1992. Our maintenance plans include annual tune-ups, priority scheduling, and discounts on repairs — so you're never caught off guard when the heat hits.

Book your maintenance visit online or call us at (954) 492-5559. We service Oakland Park, Fort Lauderdale, and all of Broward County.