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Ice on the indoor coil or refrigerant lines.

A trained tech should handle airflow work, and a technician with the required refrigerant credential should handle refrigerant work.

Customers put it like this

  • There's ice on the copper line
  • The indoor coil is frozen
  • It stopped cooling and I see ice
  • Water everywhere after it melted
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Stop first if

  • Melting ice is dripping on wiring or controlsKeep clear of it. A qualified person kills power at the disconnect while standing somewhere dry. Otherwise call a licensed electrician.
01

Ask on the call

5

Homeowner? These are the questions a good technician will ask you. Having the answers ready makes the first visit count.

  1. Where is the ice?
  2. When was the filter changed, and are the vents open?
  3. Has the system been off since you saw the ice?
  4. Was the weather cool when it happened?
  5. Has refrigerant been added before?
02

Bring

5
  • Clean filter
  • Digital manometer
  • Probe thermometers
  • Gauge set rated for the refrigerant
  • Flashlight
03

Check on site

6
  1. Keep cooling off until the coil has fully thawed. Take no readings before that.
  2. Look at the filter, the coil face, which way the blower turns, its speed, and any shut dampers.
  3. Read static pressure and work out airflow from the maker's table.
  4. Note where frost starts. A sharp temperature step may point toward a restriction.
  5. A tech with the required refrigerant credential reads pressures, based on the metering type.
  6. Check again after the system settles.
04

Keep on the record

5
  • Photo of where the ice sits
  • Filter condition
  • Static pressure readings
  • Line temperature notes
  • Refrigerant pressures, if read

General guidance for a qualified person, not a finding about any home. The person on site decides.