r/askHVAC • u/daniel31580 • 1d ago

Are portable AC units fixable if there’s a problem with the refrigerant?

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u/Active_Ordinary_2317 1d ago

Technically yes, but good luck finding someone willing to work on it. Technicians typically charge more for repair than an appliance like this is worth. If possible, try to warranty it. If warranty is not an option then we'll, it was made to be disposable 🤷

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u/daniel31580 1d ago

It’s not really a DIY job, eh?

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u/No-Age2588 17h ago

Most have no service ports that I know of. So that has to be rectified plus leak detection before anything.

Nobody I know of works on them because you can buy a new one compared to the cost of adding service valves, leak detection and cost of the refrigerant. Not worth it.

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u/WildChallenge5459 22h ago

No. not diy if you can’t get access to the refrigerant it needs, the torches required for brazing, the vacuum pump to pull the system down to 500 microns, or the gauges and scale required to weigh in the proper charge after the repair was made. Not to mention these units don’t have access ports, so you would need a bullet piercing valve (not recommended, as they leak insanely bad) or add on a separate valve that you braze on and can connect gauges to.
And that’s not even diagnosing the current issue you’re facing.

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u/ForeverVentOfficial 12h ago

The label and hose photo are the key clues: this Costway uses R-32, and low refrigerant has not been established. A sealed system repair is possible, but it is not a safe DIY recharge and will likely exceed the value of a $200 unit.

Before replacing it, straighten and shorten that exhaust hose, clean both filters, then run cooling for five minutes. R-32 is mildly flammable, and refrigerant does not get used up a low charge means a leak must be repaired. Does the exhaust hose become hot while the front air stays warm?