GibbstownHeating.comHeating and cooling referrals · Greenwich Township, NJ (888) 217-3739

Gibbstown, NJ · Greenwich Township

The AC is running but the air is warm

Warm air from a running air conditioner means the outdoor unit is not removing heat. The cause is usually a failed capacitor, a refrigerant leak, a dirty outdoor coil, or an indoor airflow problem, and the outdoor unit is where the answer starts.

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The line takes calls around the clock, every day of the year.

Go outside and listen

Fan spinning, unit humming, air warm. Refrigerant may be low, or the compressor is not pumping.

Unit silent. Check the outdoor disconnect and the breaker. If both are on, a failed capacitor or contactor is likely.

Fan not turning, but a hum. Often a capacitor. Do not poke the fan to start it.

Quick checks inside

  • Set the thermostat to cool and a few degrees below the room.
  • Check the filter. A clogged filter cuts airflow and can freeze the coil.
  • Look at the copper line near the outdoor unit. Ice on it is a separate clue. See ice on the AC lines.

What a technician measures

Refrigerant pressures with gauges, the temperature difference between return air and supply air, the capacitor reading, and the condition of both coils. Those numbers separate a part replacement from a leak search.

The age question

A system installed between about 2010 and 2025 most likely runs on R-410A. It can still be repaired and recharged. A leak on an older system, though, opens the AC replacement question, because a new outdoor unit now uses a different refrigerant and needs a matching coil.

What to say when you call

  • Central air or heat pump, and roughly how old
  • Whether the outdoor unit is running, humming or silent
  • Thermostat setting and indoor temperature
  • Address and ZIP code

Have the fuel, the age and the thermostat reading ready. Then call and ask who is taking work in your ZIP code.

Call (888) 217-3739

Read next

AC repairIce on the AC lines or coil

Something else going on?

No heat, and nothing is runningThe thermostat is calling and the furnace or boiler stays silent.The furnace lights, then shuts offBurners catch, run briefly, and go out again.The oil burner locked out and the reset button is upRed button popped on the burner; no heat.The boiler runs, but radiators or baseboard stay coldSome rooms heat, others never warm up.The gas company shut off the furnace and left a tagA utility tag on the appliance and the gas valve closed.There is ice on the AC lines or the indoor coilFrost on the copper line, or water pooling as it melts.

Towns with their own page

Gibbstown 08027Paulsboro 08066Mickleton 08056Clarksboro 08020Mount Royal 08061Swedesboro 08085Thorofare 08086National Park 08063Pedricktown 08067Woodbury 08096

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