Final answer:
The recommended approach to sizing an air conditioning system when going from the outdoor coil rating to the indoor coil rating is to ignore the coil ratings and use a fixed value.
Step-by-step explanation:
The recommended approach to sizing an air conditioning system when going from the outdoor coil rating to the indoor coil rating is to ignore the coil ratings and use a fixed value. The coil ratings are not directly used for sizing the system as they represent the performance of the coils at specific conditions. Sizing of the system is typically based on factors such as the size of the space to be cooled, heat load calculations, and other design considerations.