AC Not Cooling
If your AC runs but the house never cools down, the cause is usually one of a short list of things — and most of them are worth ruling out before assuming you need a new system.
See Causes & FixesProblem Solver
Find Your AC, HVAC, or Electrical Problem
Not sure what is wrong? Find the symptom that matches what your home or system is doing, see common causes and what you can safely check, and know when it is time to call NILOV.
Repair-before-replace advice
Humidity optimization
Ductwork evaluation
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Daikin Fit • Amana Fit • Goodman Fit
House Feels Humid
A home can feel sticky and uncomfortable even when the thermostat says the temperature is right — humidity control is a separate job from cooling, and South Louisiana makes that job harder.
See Causes & FixesOne Room Hotter Than the Rest
When every room but one feels comfortable, the cause is almost always airflow, ductwork, or the room itself — not the whole AC system failing.
See Causes & FixesAC Running All Day
Some extra runtime during peak Louisiana summer heat is normal, but a system that never seems to catch up usually points to a specific, fixable cause.
See Causes & FixesWeak Airflow From Vents
Weak air coming from the vents usually traces back to something restricting airflow between the equipment and the room — a filter, the ductwork, or the blower itself.
See Causes & FixesHigh Electric Bill From AC
A sudden jump in your electric bill points to a new problem; a bill that has crept up over time usually points to aging equipment or a system working harder than it should.
See Causes & FixesAC Leaking Water
Water around your indoor unit is common in Louisiana's humidity, and it is worth acting on quickly — left alone, it can damage flooring, ceilings, or the equipment itself.
See Causes & FixesAC Blowing Warm Air
When the system is running but the air coming out is not cold, the cause ranges from a simple thermostat setting to a refrigerant issue that needs a professional.
See Causes & FixesAC Frozen Coil
Ice on the indoor coil or refrigerant lines means airflow or refrigerant is restricted somewhere — and running the system while it is frozen usually makes the problem worse.
See Causes & FixesAC Short Cycling
A system that turns on and off frequently without running a full cycle wastes energy, wears out equipment faster, and often leaves humidity behind.
See Causes & FixesThermostat Not Working
A blank, unresponsive, or inaccurate thermostat can look like an AC failure when the real issue is the thermostat itself or its power source.
See Causes & FixesAC Making Noise
A new or unusual sound from your AC is often the system telling you something is starting to wear out, before it fails completely.
See Causes & FixesBreaker Tripping From AC
A breaker that trips once might be a fluke. A breaker that keeps tripping is your electrical system telling you not to keep resetting it.
See Causes & FixesAC Drain Line Clogged
South Louisiana humidity means condensate drain lines do a lot of work — and algae, dirt, and debris build-up inside them is one of the most common AC problems here.
See Causes & FixesDuctwork & Airflow Problems
A perfectly good AC system can still leave a home uncomfortable if the ductwork carrying that cool air is leaking, undersized, or poorly designed.
See Causes & FixesHeat Pump Icing
Ice on a heat pump's outdoor unit during heating season is a different issue than a frozen AC coil in summer — a normal defrost cycle handles light frost, but heavy or lasting ice usually means something needs attention.
See Causes & FixesAC Won't Turn On
A completely unresponsive system — no sound, no fan, nothing — usually points to power, the thermostat, or the breaker rather than a major mechanical failure.
See Causes & FixesAC Won't Shut Off
A system that runs constantly and never shuts off even after the home reaches the set temperature usually means the thermostat, a stuck relay, or the equipment itself needs a look.
See Causes & FixesBurning Smell From AC
A burning smell from your AC or electrical system is a safety issue, not a troubleshooting project. Shut the system off and contact a qualified professional.
See Causes & FixesMusty Smell From AC
A musty or mildew smell when the AC runs almost always points to moisture somewhere in the system — usually the drain pan, coil, or ductwork.
See Causes & FixesA Note on Safety
What NILOV Will Never Ask You to Do
Every problem page on this site sticks to checks that are safe for a homeowner: thermostat settings, air filters, and visual checks from a safe distance. NILOV will never tell you to open sealed HVAC components, handle refrigerant, or work on energized electrical equipment — that is what a licensed professional visit is for.
Don't see your exact problem listed?
Call NILOV and describe what your system is doing. You will get a clear next step.