AC tech just left. Questions

Discussion in 'HVAC' started by myntk12, Aug 29, 2009.

  1. Aug 29, 2009 #1

    myntk12

    myntk12

    myntk12

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    A/C technician just left the house. Came across as real honest.
    He said i was down 4 lbs in my top unit, but could only fill 2 lbs. He said my expansion valve would not allow more in and that there is nothing to be done short of an entirely new ac system in the attic. A new expansion valve would not solve a thing and he has only come across one defect in his many years.
    He suggested I change the air vent registers from my current 3 section stamped unit with units from Lowes which would allow more air.

    My question being, is there anything else i can do? Is he correct that replacing the expansion valve will not help?
    Unit is only 6 years old.
    thanks,
     
  2. Aug 29, 2009 #2

    kok328

    kok328

    kok328

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    Did he evac the entire system and then add then measure the amount of freon added back into the system?
     
  3. Aug 29, 2009 #3

    glennjanie

    glennjanie

    glennjanie

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    Welcome Myntk:
    A dirty or partially obstructed evaporator or condenser coil will make a unit appear to need more refrigerant. Some guys will continue to add 'a little gas' until you have other problems. The rule of thumb is to CLEAN FIRST, GAS LAST. A system without full, free air flow will make the gauges tell a lie.
    Glenn
     

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