MacGregorSailors.com

I cannot figure it out. How many BTU's should I install on A 2002 26X ? I am tempted to go with a small unit - like 5000-6000 BTUs. Is it enough?

That's all you will need. I've used a 5000 btu unit for over 10 years on 2001 X and it will put a chill in the cabin. It gets cold enough to stop the mosquitoes from flying. Best of luck.

I've seen mine sweat and condensate on the outside in August ! 5k btu running on a Honda 1000

5,000 BTU AC with the "Billy Box" & rear window is the most awesome system for an X. Looks factory and the extra seating is in constant use either for a "window bar" or to sit on . Easy to step over like an M.

Victor

Thank you very much! That answers my questions. Another month or so and it will be done.

I want to get the water intake for AC below the ice chest, between the centerboard and water tank. (the X in the drawing). I want to be sure there is nothing between the inside and outside walls (I do not want to go through the water ballast). Has anyone done this before?

Dragos Filimon wrote:I want to get the water intake for AC below the ice chest, between the centerboard and water tank. (the X in the drawing). I want to be sure there is nothing between the inside and outside walls (I do not want to go through the water ballast). Has anyone done this before?

Wait A minute!!
Put down the drill, hammer, saw or other implement of destruction. The AC installs that were commented on were $100 window units that we redirected & made nautical "accommodations for". Namely bottom half of companionway hatch. - No holes in the boat - ESPECIALLY Below The Waterline

Marine AC installs have been done - but non of those owners have chimed in - yet.

Seriously, think twice - & then a third time if you still want to put a hole below the waterline in this kind of boat

I know. It is scary. But it was done before. And the unit that I chose, Marineair Micra is small enough to be run on batteries for several hours. Believe me I won't cut until 100 % sure of result.

"Marineair Micra is small enough to be run on batteries for several hours"
Can you put up the specs (BTU and wattage) for this unit?
I can't imagine any sufficient AC running for hours on the batteries of a

Obelix

Also, The water ballast covers the whole bottom of the boat inside the (2) risers shown in your drawing. I think

The AC page is here http://www.marinaire.com/Marine-air-con ... aQod4VAPtg
Is 500 W and the pump will be another 100 W. But keep in mind that I have about 300 Ah installed, which is unusual for an x.

Now talking about the water ballast, that is what I am afraid of- tiny space between inside and outside that will interfere with good insulation. That is why I want to know if anybody did it before.

Dragos Filimon wrote:The AC page is here http://www.marinaire.com/Marine-air-con ... aQod4VAPtg
Is 500 W and the pump will be another 100 W. But keep in mind that I have about 300 Ah installed, which is unusual for an x.

Now talking about the water ballast, that is what I am afraid of- tiny space between inside and outside that will interfere with good insulation. That is why I want to know if anybody did it before.

That setup will give you about 3 hours of AC with standard 300 Amp hour batteries. Does that fit your cruising needs? Seems pretty light to me.

It is better than nothing.
Of course when in marina I will use shore power.

Another convenience with a window unit is you can run it while on the trailer doing work or acting as an RV.

Victor

I think that you may find that 6000 BTUs is a little light for a water cooled unit. I had a 5000 BTU window unit and it cooled the center area ok. Went a 9000 BTU mermaid water cooled unit and it was not enough. Swapped it out for a 12000 BTU unit and I can cool from bow to stern. I have my water inlet under the port stern sleeping area outside the ballast stringer. Have pics of the install on boomboom2.blogspot.com
Hope this helps
Bill