mobilehomerepair.com

I'm not sure what you mean by 'conventional', but I'm going to assume that you are referring to a package unit since we are talking manufactured homes here. Also, since I don't know the premise of your question, I can only partially answer.

Conventional (package unit):
Advantages

• low operating noise level (inside)
• self-contained

Disadvantages

• duct heat loss/gain
• critters & strays can tear them up

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Split System:
Advantages

• higher efficiency

Disadvantages

• higher operating noise level