Keeping careful track of when air filters have been changed in guest room heating and cooling units is an example of which maintenance activity? Planning Organizing Recording Implementing

Recording

Explanation:

If I intend to change the air filters in the guest room heating and cooling units, I would probably take note of number of air filter to change and all the processes involved. This is the Planning Stage

Then I arrange for an A. C. Technician or Engineer and work out the logistics of how the job will be done, this is the Organizing Stage.

When the Engineer/Technician is replacing the Air Filters, we are in the Implementation stage.

The Engineer recommends a monthly/yearly replacement or for budgeting purpose, I would need to write down when the filters were changed, this is the Recording Stage.