what is the differance between ester and pag oils fo air conditioners and which one applies to what vehicle?
what is the differance between ester and pag oils fo air conditioners and which one applies to what vehicle?
Cabin Air: The ‘Hidden’ Filter
Many motorists are unaware their vehicle has a cabin air filter, much less where the filter is or how to replace it.
Take Charge Of A/C
In the years ahead, a new refrigerant called HFO-1234yf will gradually replace R-134a in new vehicles. Up until the early 1990s, R-12 refrigerant (Freon) was used in virtually all automotive A/C systems. It was an efficient refrigerant and relatively cheap. But the chlorine in R-12 was found to have a damaging effect on the
ASE P2 TEST PRIMER: Heating, Ventilation And Air Conditioning (HVAC)
Loss of refrigerant is the most common cause of A/C cooling problems. The major A/C system components include the compressor (compresses and pumps refrigerant through the system), compressor clutch (engages/disengages the compressor), orifice tube or expansion valve (controls refrigerant flow into the evaporator), condenser (mounted in front of the radiator to cool the refrigerant), evaporator
A/C Refrigerant Hoses: Q&A
Q: How do A/C refrigerant hoses differ from coolant hoses? Refrigerant hoses on the high side of the A/C system (the discharge hose between the A/C compressor and condenser, and the hose from the condenser to the evaporator) operate at much higher pressures than coolant hoses, anywhere from 150 to 300 PSI or more depending
ASE PS2 Test Preparation Guide: Heating, Ventilation & Air Conditioning (HVAC)
● COMPRESSOR — Pumps refrigerant to the condenser and evaporator to cool the passenger compartment, and pulls refrigerant vapor from the evaporator to compress it. Most compressors are belt-driven (a few hybrids have electric compressors). A “magnetic clutch” on the compressor pulley cycles the compressor on and off as needed to control cooling. Some compressors
ASE PS2 Test Preparation Guide: HVAC Heating & A/C System
Major system components: A/C compressor, compressor clutch, orifice tube or expansion valve, condenser, evaporator, accumulator or receiver/drier, low-pressure safety switch, HVAC fan, fan resistor block or blower control module, automatic climate control module, interior air temperature sensor, sunload sensor, refrigerant, refrigerant hoses, fittings and o-ring seals and heater core.
I have a 2004 Mercury Sable 3.0 OHM. It runs fine until you turn on the A/C. What’s up with that?
I have a 2004 Mercury Sable 3.0 OHM. It runs fine until you turn on the A/C. What’s up with that?
Air Conditioning Service is a Good Topic Any Time of Year
Many motorists don’t know is that their A/C system works year round, not just during the hot summer months.
ASE P2 Test Preparation Guide: HVAC
ASE P2 Test Preparation Guide: HVAC
I have a 95 Mazda Protege and the A/C only blows cool and not cold when the car is in motion. When the car is still it blows hot air. What could this mean?
I have a 95 Mazda Protege and the A/C only blows cool
17th Annual Technical Forum: A/C Compressors
Counterman magazine presents 15 technical and sales topics in an easy-to-read question-and-answer format for the magazine’s annual Technical Forum. This article appeared in the August 2009 issue.