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Auto AC Repair in Marble Falls, TX

Use this page when the air inside your vehicle is not as cool as it should be, or the vents are weak, noisy or smelly. It explains common causes in plain language and what to tell us when you call.

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Signs your car's AC needs attention

  • Warm air from the vents

    The AC runs but does not cool, or it cools only on the highway and not at a stop.

  • Weak airflow

    The fan sounds like it is working but little air comes out, on one setting or on all of them.

  • Musty or unpleasant odors

    Smells from the vents when the AC or fan starts, which can involve moisture in the system or a dirty cabin air filter.

  • Noises that start with the AC

    Squealing, grinding or rattling that begins when you switch the AC on and stops when you switch it off.

  • AC that works, then stops

    Cold air that cuts out after a while, or comes and goes with no obvious pattern.

  • Fluid under the vehicle

    Clear water dripping while the AC runs is normal condensation. Oily or colored fluid is not and should be mentioned.

How a car AC system cools the cabin

Your AC moves refrigerant through a closed loop. The compressor pressurizes it, the condenser at the front of the vehicle releases heat, and the evaporator behind the dash cools the air that the blower sends through the vents.

Because the system is sealed, low refrigerant usually points to a leak somewhere. Adding refrigerant without finding the leak can leave the real problem in place, which is why a cooling complaint starts with finding the cause.

Refrigerant is only one possibility. Warm or weak air can also come from the compressor, the cooling fan, a blend or blower component, a clogged cabin filter, or an electrical fault. That is why two vehicles with the same symptom can need different repairs.

Air conditioning service machine with pressure gauges set up next to a white pickup truck with its hood open
AC service equipment set up beside a pickup in the shop.

What this page covers

  • Looking into the cause of warm air, weak airflow, odors or noises from the AC
  • Repair of the AC problem we find
  • A plain-language explanation of the cause and the recommended repair

Limits of this page

  • We have not published which refrigerant types or AC components we service. Ask when you call.
  • We cannot say from a description whether the problem is a leak, a part or a connection.
  • If a warning light is the main concern, computer diagnostics may fit better.

What to tell us when you call

  • The year, make and model of your vehicle
  • Whether the air is warm all the time, or only at idle or in traffic
  • How strong the airflow is on each fan speed
  • Any noise or smell when the AC is on
  • When it started, and whether it stopped suddenly or faded gradually

Questions worth asking the shop

  • Can you find out why the AC is not cooling before recommending a repair?
  • Is the problem likely to be the refrigerant, or something else?
  • Is it safe to keep driving with the AC off in the meantime?
  • Could the cabin air filter be part of the problem?

Auto AC Repair questions

Why is my car's AC blowing warm air?

Common causes include low refrigerant from a leak, a failing compressor, a condenser or cooling fan problem, or an electrical fault. The cause needs to be found before the repair is clear.

Why does my AC smell musty?

Moisture can build up on the evaporator behind the dash, and a dirty cabin air filter can add to the smell. A musty odor is a good reason to have the system and the filter looked at.

Is water dripping under my car when the AC runs normal?

Clear water dripping from near the front passenger side is normal condensation. Oily or colored fluid is not, and should be mentioned when you call.

How often should the cabin air filter be replaced?

Your owner's manual gives the recommended interval for your vehicle. Dusty roads and heavy use can mean replacing it sooner, and a clogged filter can reduce airflow from the vents.

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AC not keeping up?

Call to Discuss Your Repair830-201-4009Get Directions