Originally Posted by darylat8750
Would you be willing to recommend a couple of the air cooled units you are referring to?
There are several good air cooled units out there:
Adler Barbour (evaporation plate)
Nova Kool (evaporation plate)
Technautics CoolBlue (holding plate)
Mark on SV Reach in another refrigeration
thread reported that he was using 45-55AH per day on his AB system big freezer
and full time cruising in the tropics and CoolBlue has testimonials of simular power usage. I'm the manufacturer of the Technautics CoolBlue system, so of course I like my unit, but there are lots of good options out there that are air cooled. BUT more important than the system....is the insulation
in your BOX, I will say that right now! The best refrigeration
unit in the world can't help a poorly insulated box be efficient.
The No 1 problem with refrigeration systems on boats isn't the system they have, but the damn worthless insulation
in most boats. All the time we have clients tell us "oh...my insulation is great" and then when their Amp usage turns out to be double what it should be it takes a little testing to show them that the R30 insulation they "thought" they had was really an R10 or worse. No system in the world will keep their ice cream hard not because of the refrigeration system, but because even running at full speed for 24hrs per day, more heat is coming into the Box than the compressor
I would say look at those three brands above, do a little comparisons and ask some technical questions from the manufactures. But after living and cruising aboard now for 6 years, I have seem more problems with water
cooled units (both keel
Koolers and pumped water) to not put one on my boat. The hard part is that peope will say "I love this, I love that, etc" but without them giving the following information along with their "I love this or that" comment you can't compare anything.
Cubic Foot size of Freezer
Insulation R-value or at least the type and inches of insulation they have
Number of people aboard
Location (Pacific North West or Panama)
Daily Amp hour usage
With those 5 things you can get some good comparative data.
Another good thing is take a look at Richard's Website:
He has lots of great info and will help you get a feeling for the overall technology.