Both AC and DC heaters are rated 85 watts, but because of the low
voltage/high current the 12V one is much more susceptible to undersized
wires and less than perfect connections.

Yrs,
d

On Wed, Jun 21, 2017 at 4:35 PM, steve meassick <stevem@tdhvac.com> wrote:

> A little bit off topic, but when I measure the power draw of the two
> electric heating elements, I see about 95W for the 120VAC one and about 65W
> for the 12V.  This would explain why the units don't cool very well on
> 12V.  The way I have gotten around this is that I have an Xantrex