In a video posted to local police AUGC Guardia Civil's Twitter account, the unidentified man is seen throwing the fridge over a guard rail into a ravine in Almeria, in the country's south-east, before returning to his van.
Both the person recording the video and the man in question, who are speaking Spanish, are heard saying "recycling, let's go, recycle it" and "let's see how many flips it can do", according to CNN.
The offender, who was ultimately identified by police, was fined 45,000 euros ($74,277) and ordered to return to the scene, collect the fridge to dispose of it correctly, AUGC Guardia Civil tweeted.
the man and a companion are seen struggling to haul the appliance back up the cliff.
A spokesperson for the civil guard told CNN a court would now decide whether the man would face further fines for "environmental crime".
Following the investigation, police said a waste management company that employed the man would also face sanctions because it too had failed to properly dispose of old refrigerators.
Video posted by Spain's civil guard shows the unidentified man throwing the fridge over a guard rail into a ravine, while reportedly saying let's go, recycle it.