fossilboy50 wrote:.... So I have a 6K BTU unit ready to install in my teardrop in a few years when I actually build to that point; this is going agonizingly slow! The trouble I have is rationalizing why I need a window unit with 5-6K BTU to cool a 7'X5'X4' or roughly 140 cu ft space, with an air conditioner rated to cool 250 sq ft (figure 10'X25' in a room with standard 8' high ceilings). I mean, clearly this should be way overkill, since the total VOLUME of my finished project will be half the AREA for which the A/C is rated. And the A/C needs to run often enough to effectively dehumidify as well as cool, especially since the aforementioned high humidity is prevalent and overwhelming....
P.S. I forgot to add this, referring to the last quoted sentence: My A/C unit is inside my galley, sealed away from the sun, or other weather. Its' coils and condensers also have a constant airflow over them (from a high-flow 120vac computer case fan, blowing dry ambient air over them for added cooling). The exhaust is sealed with insulated ducting, and its' flow is also aided by another fan, a thermal-resistant axial fan inside the ducting. I've eliminated any adverse factors that the 5k unit may have faced...it works great.DIY.com wrote:One of the most common problems associated with window air conditioners freezing up is that they are either not big enough for the room, or are too big for the room. Either extreme sizing issue will cause ice to form on the vents. A unit that is too small will have to run much harder than it should in order to keep a large room cooled down. This will result in a lot of condensation forming and resulting in ice.
On the other side of that, an air conditioner that is too large will eventually form ice on the vents because it does not run enough. Condensation from sitting in the sun will form on the coils and condenser. When purchasing your window air conditioner, make sure it is the right size for the room it will be cooling to prevent it from freezing up.
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