Spacing of the Indoor Evaporator in Relation to the Ceiling
March 31, 2009 by Shawn Mack
Filed under Ask Thomas
First Name: Joseph
Last Initial: E
Mitsubishi MXZ-4A36NA
36,000 btu. Heat Pump Mini Split
Problem: What should the space between the indoor wall unit and the ceiling be?
Solution: Ideally, you will want to leave approximately 10 inches between the ceiling and the indoor evaporator. This leaves enough room for the indoor unit to draw in fresh air through the top and positions the unit high enough to maximize the cooling effectiveness throughout the room. Cold air settles downward, so the higher the better. You can mount the indoor evaporator at any level, but the best position is 10 inches below the ceiling.
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