Now I know that the small Hella Turbo fans do not move as much air as some of you are with your big 16" or 20" box fans....but, you are using quiet a bit of energy to run them...
And, you could run a half-dozen Hella Turbo fans, and a few 10" O2 Cool fans, get as much airflow and use a lot less power!
Originally Posted by zboss
We cool down the boat with a $16.88 walmart 20" fan special run through an inverter. Uses about 5.7 AMPS @ 12 volts (as seen using a 12 volt clamp on meter from behind the inverter) when running on high.
FYI, the Hella Turbo fans are very stingy on energy use....at 12vdc, on high-speed, they draw a very small amount of juice! About 1/4 to 1/3 of an amp, using my clamp-on meter (which is pretty damn close to other meters I've checked it against)...
I actually measured 0.28amps to 0.35 amps, on my own Hella Turbos...
(Some will quote the factory spec, of ~ 1/2 amp....but it's a
For those who want to move a lot of air, and have the room for bigger fans....have a look at the 10" O2 Cool fan!
It moves a lot of air and draws 4/10 of an amp!!
Yes....that's right....4/10 of an amp...
Those that don't believe it, here are two photos showing it in operation, with my meter showing 0.45amps...although at "zero", the meter bounces from 0.03 to 0.06amps....so figure about 0.4 amps of draw for the 10" O2 Cool fan!
And, yes....using an exhaust
fan to pull the heat out of the boat is always a good idea....(and I even have one built-in to the hood
over the stove/oven, in the galley!)
And, having a hatch over the galley
(as I do) is also nice...
And, while they don't move enough air to cool anyone down, those small solar
vents DO work! (they keep enough airflow to eliminate mildew, etc. and keep your boat smelling nice, even if closed up for weeks/months in tropical climates....I know, 'cause that's what I do!)
Mine are factory installed, circa 1999, and STILL work today! (I just heard 'em whirring, a couple hours ago!)