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    January 15, 2026 3 min read

    AC Tips for Getting Through Louisiana Heat

    A few simple habits — a clean filter, a clear outdoor unit, a reasonable thermostat setting, and a clear drain line — help a cooling system keep up during a long, humid Louisiana summer. When those habits aren't enough, it usually means something needs a technician's attention.

    1. Change Your Air Filter More Often Than You Think

    Humidity, pollen, and pet dander can clog a filter faster than in drier climates. A dirty filter restricts airflow, makes the system work harder, and can contribute to a frozen evaporator coil.

    • 1-inch filters: often changed monthly in summer
    • 4-inch media filters: often changed less frequently
    • Homes with pets or allergies: check more often

    2. Keep Your Outdoor Condenser Clean

    Grass clippings, nests, leaves, and yard debris can block airflow around the outdoor unit and reduce how well it releases heat.

    • Keep clearance around the unit
    • Rinse the coils gently with a garden hose occasionally
    • Trim back nearby landscaping
    • Never stack anything on top of the unit

    3. Don't Set Your Thermostat Too Low

    Setting the thermostat far below a comfortable target does not cool the home any faster — it just makes the system run longer, and in humid conditions it raises the risk of ice forming on the coil.

    A workable approach: pick a setting the system can hold steadily during peak heat rather than chasing a very low number.

    4. Check Your Drain Line Regularly

    Condensate volume is high during a long humid cooling season. If the drain line clogs — often from algae growth — water can back up and:

    • Trigger a safety float switch that shuts the system off
    • Cause water damage near the air handler
    • Contribute to growth in the drain pan

    Many homeowners flush the line periodically as a preventive habit.

    5. Have the System Checked Before Peak Summer

    A pre-summer visit typically checks refrigerant charge, cleans the evaporator coil, tests electrical components, verifies thermostat calibration, and flushes the drain line — all things that are easier to catch before the system is under maximum load. Our maintenance plan includes two seasonal tune-ups a year.

    6. Consider Your Ductwork

    In many homes, ductwork runs through a hot attic. Leaking, torn, or poorly insulated ducts can lose conditioned air before it reaches the rooms. Our AC repair team can evaluate whether duct condition is part of the problem.

    Signs of duct problems:

    • Rooms that never cool down
    • Dusty vents
    • Higher than expected energy use
    • AC runs constantly but home stays warm

    Ready for a system check?

    Call (504) 762-0331

    Serving the Greater New Orleans area.

    Frequently Asked Questions

    A 1-inch filter is often changed monthly in summer, and a 4-inch media filter less often — the right interval depends on filter type, pets, dust and how long the system runs. Check the filter and judge by how dirty it looks rather than a fixed calendar date.

    Many homeowners find 74–78°F a workable balance between comfort and system strain during peak heat. Setting it much lower does not cool the home faster and can increase the chance of coil icing.

    Algae and biological growth can clog a condensate line during a long humid season. Many homeowners flush the line periodically as a preventive step; a technician can also install a cleanout or safety switch during a maintenance visit.

    Rooms that never cool down, dusty vents, or a system that runs constantly without keeping up can point to duct leakage, especially where ducts run through a hot attic. A technician can inspect duct condition and confirm whether sealing or repair is needed.

    HVAC Service Areas

    Keeping It Cool Heating & Air proudly serves homeowners throughout the Greater New Orleans area:

    Related Services

    Need help from a Greater New Orleans HVAC pro? Explore the services most relevant to this article:

    Your Next Steps

    1. Join a twice-yearly maintenance plan

      Two seasonal tune-ups and a repair discount on the membership plan.

    2. Maintenance plan FAQs — what's covered and how often

      Visit frequency, included tasks, and plan tiers explained.

    3. Emergency HVAC FAQs — what counts as urgent

      When to call after hours versus waiting for a regular appointment.

    4. Request a written, no-pressure quote

      Tell us what is happening and we will put the scope in writing.

    Talk to a tech now: (504) 762-0331