Well, air conditioner compressor is one of the most important components of the unit to cool the air. It is placed outdoor of the room and usually together with outdoor components like condenser. It is also usually sealed into a single unit. Motor is important component of compressor and has important function to move refrigerant gas through evaporator coil and ducts from indoors of the house. The other component is cylindrical piston. On the down stoke, it has function to direct the refrigerant gas and then compress it on the upstroke with its moves down and up performance. Overall, the function principle of compressor either in AC for residential houses/ buildings or in cars is the same!
The proper performance of air conditioner compressor gives the drastic contribution to the performance of the unit. Therefore, the regular maintenance (minimal once a year) is so recommended to keep it on its best performance. If you find it has already worn out then replacing is the option that cannot be compromised. It usually has specific serial number that basically to help a homeowner to find the new one easily. And if you get this problem and your compressor has not yet expired on its warranty period then you can contact the manufacture of your AC unit is the best solution. You can give the detail information of the compressor that you require to them, and then they usually shall likely replace it free. In addition, most of manufactures usually provide around 4 to 10 years lifetime warranty on their air conditioning compressor products.
Well, the procedures on how to remove or replace the air conditioner compressor are not easy, particularly if you don’t have the adequate skill (beginner). And this process could take more than twenty hours. Hmmm… below are some basic procedures that may be helpful for you and finally you find the answer why it is difficult to be finished quickly:
- First, preventing the unwanted electrical incidents, make ensure the electrical disconnect box of the unit is in turn off mode.
- Next, you need the refrigerant recovery machine to recover all refrigerant. This process usually will always need the refrigerant hose connection between port and machine and recovery tank. Getting more detail information, you can read in the manufacturer’s instructions of the recovery machine.
- Open the cover of electrical service box by using the nut driver to remove the screws. It is required because there are available some modes that share the compressor access with this box.
- Then try to access the compressor! Maybe you will need to remove the fan and also its shroud, and once again it depends on the model of the compressor. In addition, there are also available some models that use metal-flat panel. It is usually installed on the side of the box next to the condensing unit. Be careful to the wires when removing the fan or panel, some of them may remain connected.
- The insulation cover is usually installed around compressor. It is purposed to enhance the efficiency performance of air conditioning unit. Therefore, you should remove it before finally remove the cover. As additional information, the insulation is usually made from plastic material and designed with snap buttons in order to keep it on its place properly.
- Next, take apart the electrical connection in the compressor’s cover. You can make it easily by using the flat screwdriver. Then find the thin slot and depress it with the flat-head of your screwdriver when fetching the cover away.
- Then, 3 wires that connect to the electrical terminal must be disconnected.
- Use the wrench to unbolt some bolts of compressor from the floor of outdoor condensing unit.
- Use the acetylene or O2 torch to heat the solder joint to the bottom of refrigeration line with the result that solder drips or melts. Do with the same procedure when heating the top refrigeration line! Don’t forget to use pliers when taking the refrigeration line. As additional tip, by removing the bottom refrigeration line first is so helpful to minimize or avoid the accident risk of skin burns.
- Then you can use the wet rap to cool the solder connections faster but better you let them cool down naturally.
- And finally, now you can try to lift the air conditioner compressor properly from the unit!
Read also Simple guide on how to troubleshoot portable air conditioner & how to cool garage!
More tags: procedure for changing out hvac compressor, how to replace compressor on air conditioner, how to remove air conditioner


