Inside a worn garbage disposal: rusty grinding plate and lugs seen from the sink
Generic photo: Rthardin · CC BY-SA 3.0

Hauling away an old fridge, freezer, window AC or dehumidifier: refrigerant disposal rules

Household refrigerators, freezers and window units usually go into the waste stream with their refrigerant still inside. Under Clean Air Act Section 608 it is illegal to knowingly vent most refrigerants during disposal, and the final processor (scrap yard, landfill) must either recover the refrigerant or get a signed statement or contract saying who recovered it and when. Cutting lines or pulling the compressor does not count as 'leaked out'. For a tech, the clean path is to deliver the unit intact to a recycler, utility program or hauler that recovers refrigerant, and keep the paperwork.

Cross-checked ~10 min easyBrands: All

Before you start

  • Do not cut refrigerant lines, remove the compressor or vent refrigerant (blocked; EPA 608)
  • Remove or tape doors closed on any unit left outside so a child cannot get trapped
  • Some units use flammable refrigerants (R-600a, R-290); no flames or cutting tools near the sealed system

Diagnostic steps

Unlock all 4 steps with expected values

Full library + AI assistant + the OnCall Tech app for iPhone & Android. $34.90, one time.

Get lifetime access

OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

More tech fundamentals guides

Guide · Fundamentals

Blower runs nonstop and no cooling on a new HVAC system: A2L refrigerant leak sensor

A2L systems carry a refrigerant leak sensor near the indoor coil. When it reports a leak, or when the sensor fails or loses communication, the control stops the compressor and runs the blower to dilute any refrigerant. This guide separates a sensor or wiring fault from a possible real leak; any real leak is referred to an EPA 608 technician.

8 steps ~40 minmoderate
Guide · Fundamentals

Confirming an inverter board's DC bus is discharged before you touch it

Inverter boards store high-voltage DC in large capacitors after the power is off, and a dark LED does not mean the board is safe. Remove power, wait the maker's time, then measure the DC bus at the marked test points until it reads 0 V. Only then unplug loads or handle the board.

7 steps ~20 minmoderate
Guide · Fundamentals

Load will not turn off: shorted triac or welded relay (board vs load)

When a load runs with no command, the board output that feeds it is usually shorted: triacs most often fail shorted and relay contacts can weld closed after inrush. Confirm the output is truly on with the load connected (not a ghost reading), then test the load itself, because a shorted or seized load is what usually kills the output.

8 steps ~40 minmoderate
Hauling away an old fridge, freezer, window AC or dehumidifier: refrigerant disposal rules · OnCall Tech