My window air conditioner has lost its oomph. How can I diagnose it without having to go through the hassle of removing it from window?

My window air conditioner has lost its oomph. How can I diagnose it without having to go through the hassle of removing it from window?
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1 Answer

Answer :

answer:Is the coolant compressor kicking in at all? Perhaps you already know this, but with most window units, you can hear a humming sound when the compressor’s running, whereas you will only hear the sound of blowing air when the fan is running but the compressor isn’t. If the compressor isn’t running at all, then there won’t be any reduction in the room temperature. If the compressor is running but there’s no cooling, then your unit might need a recharge. If it isn’t running, then it could be a failure in the unit’s thermostatic system or a compressor motor failure. The lack of cooling could be caused by other things, but first try to determine whether the compressor is running.
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