Why is my car's A/C weak or not working? Weak airflow from your car's vents is often a blocked blower, not a bad A/C compressor. Don't guess from online forums. Get the A/C inspected so you only pay for what's really wrong.
The case: a Honda with a trickle of air
A driver took her Honda out of storage for summer and found hot air barely trickling from the vents. Online forums had her convinced the A/C compressor was bad. We also heard a loud humming noise when the fan ran.
We removed the blower fan to check for a blocked vent or a bad motor. Mice had nested inside the dash and chewed up a blanket from the trunk. The fan pulled the pieces in and blocked the airflow.
The fix
The fan itself was fine. We cleaned it, vacuumed the vents to remove the debris, put it back together and tested the A/C. Problem solved, without a big repair. We often pinpoint A/C issues in under an hour, and many repairs are simple enough to finish the same day.
Why rodents love cars
Cars that sit over winter give mice a warm, safe place to live. It can happen with a stored car or a daily driver. They chew wiring, insulation and interiors, and they nest in vents and air boxes.
How to help keep mice out
- Dryer sheets in large open areas can deter them.
- Steel wool can block gaps around pipes and openings.
- Traps can work but can be messy.
- Mothballs may keep them away but the smell can linger.
- Rodent bait is used by some car collectors. Keep it away from pets and kids.
Questions we hear
Why is my car A/C blowing weak air?
Causes include a blocked blower, a dirty cabin filter, a failing blower motor, or a blocked vent. Low refrigerant causes warm air instead.
Can mice damage my car?
Yes. They chew wires, hoses and insulation. If you see droppings or chewed material, get the car inspected.
How do I know if it's the compressor?
You need a proper test. Noise, warm air and a clutch that won't engage can point there, but other issues look the same.
Having A/C trouble? Learn about our A/C and heating service or schedule online.
