Cabin air filters remove dust and pollen from the outside air entering the AC system. Re-circulated air should already be cleaned by the cabin air filter as it entered the car. All sources and heated air only are ruled out by the filter being in the outside source, which supplies air for ventilation, heating, and […] The post What is the purpose of the cabin air filter? appeared first on Auto A/C Repair LLC ..read more

Car A/C compressor cycling on and off The car a/c compressor cycles on and off according to the air conditioning system temperature and pressure. Normal on and off cycling happens at a manufacturer predetermined a/c system temperature and pressure. Car ac compressor cycling is one of the logics used by car manufacturer to protect the […] The post Compressor Rapidly Cycling On and Off in Car Air Conditioner. appeared first on Auto A/C Repair LLC ..read more

Thermal switches are used on both the low and high side of AC systems. A Thermal switch may be connected in series with the compressor clutch. A/C compressor cycling control . A thermostatic switch de-energizes the clutch and stops the compressor to keep the evaporator from freezing up. When the temperature of the evaporator approaches […] The post Air conditioning controllers. appeared first on Auto A/C Repair LLC ..read more

What are the symptoms of a bad fan clutch? We need the fan clutch to cool down the vehicle ac condenser in order to allow the refrigerant condensing and subcooling process to happen as efficiently as possible. A bad fan clutch will decrease the vehicle a/c performance. Symptoms of a bad fan clutch and air […] The post What are the symptoms of a bad fan clutch? appeared first on Auto A/C Repair LLC ..read more

The evaporator water drain is an integral part of the evaporator housing assembly. A crack or break in the housing may reduce the cooling capacity of the air conditioner. Engine hot air leak inside hvac box.  If the case has a crack or break on the engine side of the firewall, excessive engine heat may […] The post A/C water leak inside car appeared first on Auto A/C Repair LLC ..read more

A broken blend door cable will make HVAC output temperature uncontrollable. The blend door controls the temperature of the air by routing the air through or around the heater core. Cold temperature, blend door position. When the control is set to cold, the blend door blocks the air from going past the heater core. Hot […] The post AC temperature knob inoperative appeared first on Auto A/C Repair LLC ..read more

This may result in high refrigerant system pressures and refrigerant discharge from the high-pressure relief valve. A/C system performance. These restrictions will not allow enough air to cool down the condenser, causing higher temperatures and result in higher pressures. Do you need assistance checking your auto ac system ? Contact Us ! We do mobile […] The post A/C Refrigerant flow restrictions. appeared first on Auto A/C Repair LLC ..read more

Freon recharge. To charge a system with the engine running, the refrigerant should be added to the low side of the system. Safety precaution. Never open the high-side hand valve with the system operating and a refrigerant can connected to the center hose. The refrigerant will flow out of the system under high pressure in […] The post How to recharge your car ac system appeared first on Auto A/C Repair LLC ..read more

There is a noticeable noise coming from the engine compartment when the A/C is selected. A compressor noise is often difficult to locate. When the compressor is operating, a loose compressor mount or bracket may vibrate, giving the impression that the compressor itself is somehow defective. This type of noise usually stops when the compressor […] The post A/C compressor bracket damage. appeared first on Auto A/C Repair LLC ..read more

  If moisture enters the A/C system, it mixes with the refrigerant to form harmful acids. These acids damage the ac components from inside out.   How to prevent acids from forming.   The method of removing any moisture from the A/C system is to pull a deep vacuum on the system. Pulling a deep […] The post What causes ac freon leaks ? appeared first on Auto A/C Repair LLC ..read more