Air Conditioning Repair

The automotive air conditioning system is combined with the ventilation and heating systems, making a complex network of parts.

Air conditioning refrigerant is blended with a special oil that phase changes it from a liquid to a gas in just a few moments to cool down the passenger compartment. Remember that your air conditioning system in your car works all year long ... not just in the summer!

If there is a leak, the lubricant can’t work properly, which can damage the compressor, the most expensive part of the system.

Lack of refrigerant is the main cause of air conditioning problems. That’s why it’s important to inspect the system regularly to make sure it’s properly sealed. A strange noise, odours, excess moisture, or a lack of fresh air are all signs that it’s time book an appointment at Pawlik Automotive.

Air Conditioning

No Cold Air Causes:

  • A Freon leak caused by a failed o-ring, seal, hose or component
  • A clogged expansion tube or refrigerant charging hose
  • Failed compressor or compressor clutch
  • Failed blower motor or blower motor resistor
  • Damaged or failed condenser or evaporator
  • Vacuum leaks
  • Failed switch, fuse, relay, control module, blend door or solenoid

Weak Airflow Causes:

  • Mold or mildew may grow in the evaporator core from residual moisture that is left during the cooling process. This can restrict air flow to your vents.
  • Hoses not secure, hoses failed or fittings failing. This happens more often with the blower hose to the blower unit.
  • Ventilation fan has failed. If the fan’s not turning, air won’t be blowing either.
  • Seal failure. Core case seals, blower house seals or evaporator core case seals; All can wear out and diminish air flow. A/C ventilation systems are very sensitive and must remain tightly sealed. Once they fail, the whole system is compromised.

Musty, Mildew Smells Causes:

  • Air cabin filter needs replacing.
  • Moldy evaporator case. A problem when water sits in the evaporator case because the drain is blocked. Mold builds up and your car smells like it.

Starts Cool and Then Blows Warm Air Causes:

  • Clogged expansion valve... The expansion valve distributes the proper amount of refrigerant to your evaporator. If the valve is blocked, the refrigerant can’t flow into the evaporator. With the valve clogged, the refrigerant will freeze the valve operation if moisture is present.
  • Faulty compressor clutch... If the clutch is not engaging with your compressor, than your compressor can’t maintain the correct pressure. Hot air will result.
  • Blown fuse... Fuses short out to prevent fires. If the fuse associated with your A/C system is triggered, the power stops.
  • Leaks are an A/C system’s enemy. Leaks are the result of damage or the presence of moisture. When moisture and refrigerant mix, nasty corrosive acids will corrode seals and components, eventually causing a leak.