I have a window AC unit that fits the center window of my CD22. The unit sits on the floor of the cabin just aft of where the porta-potti sits when not in use. Having this unit allows the AC system to be left at home when not needed.
I use split pipe insulation around the edges of the window to block the gap. I also put some runners on the bottom of the unit (from PVC lumber) that has a notch cut into them to grab the window frame. There is another piece cut that goes outside the window on the top of the trunk to support the back end of the unit. I have to disconnect the window strut from the frame to fit my AC unit. However, this allows the strut to hold the window fully open by putting the end on the top of the trunk.
I used to boat in the mid-Atlantic region. While it does not get as hot as the SW, the humidity is brutal in the summer. The window unit worked pretty well to cool and dehumidify the cabin, but it helped to put the window shades up on the sunny side of the boat.
I can run my AC unit off my Honda EU1000 without any problems.
One thing to keep in mind is that these small AC units get some of their cooling by slinging water. As the run, the condensate is collected in the bottom of the unit for the fan to pick up and sling. Some small units have drains to dump excess water, some don't. If you have a unit without a drain you are likely to get wet picking the unit up if you don't keep it level. One unit I had did have a drain which I could connect a hose to that allowed water to drain overboard. The current unit does not have a drain so I added a small drain valve that allows me to dump the water before moving the unit.
The opening to the window on a 22 is not that big. AC units in the 5000BTU units will fit, but you should measure to be sure. I did buy one once that did not fit and had to be exchanged.
Mechanical controls on the unit are probably better than electronic controls because the power supply may not be that stable.
Since the AC unit mounted in the window tends to blow to the back of the cabin, I have a 12v fan that is positioned in the berth entry to blow the cabin air into the berth when sleeping. This works very well.
Yes, this AC installation can look a bit kludged together if you are concerned with appearances. Me, I just enjoy the cold cabin.
I use split pipe insulation around the edges of the window to block the gap. I also put some runners on the bottom of the unit (from PVC lumber) that has a notch cut into them to grab the window frame. There is another piece cut that goes outside the window on the top of the trunk to support the back end of the unit. I have to disconnect the window strut from the frame to fit my AC unit. However, this allows the strut to hold the window fully open by putting the end on the top of the trunk.
I used to boat in the mid-Atlantic region. While it does not get as hot as the SW, the humidity is brutal in the summer. The window unit worked pretty well to cool and dehumidify the cabin, but it helped to put the window shades up on the sunny side of the boat.
I can run my AC unit off my Honda EU1000 without any problems.
One thing to keep in mind is that these small AC units get some of their cooling by slinging water. As the run, the condensate is collected in the bottom of the unit for the fan to pick up and sling. Some small units have drains to dump excess water, some don't. If you have a unit without a drain you are likely to get wet picking the unit up if you don't keep it level. One unit I had did have a drain which I could connect a hose to that allowed water to drain overboard. The current unit does not have a drain so I added a small drain valve that allows me to dump the water before moving the unit.
The opening to the window on a 22 is not that big. AC units in the 5000BTU units will fit, but you should measure to be sure. I did buy one once that did not fit and had to be exchanged.
Mechanical controls on the unit are probably better than electronic controls because the power supply may not be that stable.
Since the AC unit mounted in the window tends to blow to the back of the cabin, I have a 12v fan that is positioned in the berth entry to blow the cabin air into the berth when sleeping. This works very well.
Yes, this AC installation can look a bit kludged together if you are concerned with appearances. Me, I just enjoy the cold cabin.
