Originally Posted by Capt.Tom
I have been a marine electrician for 30 years and believe me when I say..... If i read you frig's tag correctly, it will eat your battery's alive with 188 watts inverted from 12 volts . That's 15.6 amps drawn off I hope you have lots of batterys with wind generator
and solar pannels. Inverters are nice for quick use but not for every day. Your frig runs 24 / 7. You are much better off with a smaller unit that has its own designed inverter than a big monster that consumes energy just being turned on.
yes, more choices with AC frig but get cold plates for a seperate frezer that are driven by your Gen or engine and a small DC frig for the everyday stuff.
A home frig doesn't care if you open it and all the cold spills out. There is an unlimited supply of power. Cruisers need to conserve power. Small is the key and reach down into the way to go. I Have an ice box with a dc driven compresser plus a small frig ... DC driven. Only on long trips do I use the freezer
and it runs a litter and shuts off because we rarely open it. The frig runs more often and it is only 2.3 cubic feet And I have a 40 footer. Food
in that frig will feed 2 for a week.
Less is More !
Thanks for your post and welcome to the forum Captain
I have 680W solar and 400W wind
genny, nominal, but anyways.
We have a long term engineer member
here on the forum who has an AC domestic fridge aboard her boat, and she seems pretty happy with it. In Florida
latitude (if I recall
right) it doesn't run all the time, maybe 15 minutes in an hour, I can't remember exactly without checking. But she has shared positive comments about it in the past here on this forum.
Why am I interested in an AC fridge? Well yes, the price
. A 180 liter fridge with a freezer compartment would cost about 180 USD. Yes should add the price
of inverter also.
I recently ordered a new compressor
and evaporator from Australia
, as my old machinery is kaput. The shipping
was supposed to be 160$. After two weeks the shipping
company asked for data sheets
of the compressor and said the shipping just increased to 320$. Ok.. well, never mind... Two weeks later they said they have to fly in a specialist from the other coast to inspect the compressor and do the paperwork, and that costs 900$. At that point I cancelled the order. So, my new machinery for the DC fridge would have cost me about 2000 USD. not including the box. Just the compressor and evaporator (and shipping). Adding to the equation my original icebox
should be totally redone, as it is, well original, and they are crap ( Kollmann Marine
So, I have been comparing the price of a 180 Liter DC fridge (180 USD plus inverter) to the said 2000 USD plus huge project
to redo the old box) So do you now see where I'm coming from?
I know the AC fridges are not so efficient and when you open the door the cold air escapes to the floor. I know at sea you'd be hard pressed to open the door cos your food stuff might all jump out. It's not ideal. And it's not easy to find a spot for a square fridge in a non square boat, especially in a not so big monohull
. But for a temporary solution you can't beat it in my honest opinion. Yes, maybe when I find more motivation and money
I will redo the DC fridge side. But even then I just might still keep the DC fridge as well.