I too was going to buy the in-ceiling style until I did proper research about it on youtube. Once installed, the entire top of the unit inside the attic must be totally and adequately covered in insulation. If not, it will condense water on the outer walls of the unit and you will have a dripping rain that falls between it and the drywall hole into your living space. My attic space over the lanai was extremely difficult to get to and I, therefore, reasoned that servicing this unit from the topside to insure proper insulation would be a nightmare. Instead, I went for a ceiling unit that hung from the ceiling instead of being recessed into it. This way the entire unit is within the living space and the insulation barrier is no longer of any concern. You'll need to order it from home depot on their website and have a professional install it afterward. Pioneer 18,000 BTU 1.5 Ton 20 SEER Floor/Ceiling Mini-Split Air Conditioner Heat Pump System Full Set
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