Electric fans use less "power"... typically 3 to 5 HP.
However, the fan motor will pull 15 to 25 amps!! That will add extra stress on an alternator and battery.
It takes a little HP (1 to 2) to spin and alternator that is charging at 20 amps.
In my 1985 22R, turning on the headlights at idle would drop the idle by 150 to 200 RPMs.
Newer LED headlights only draw about 4 to 5 amps, so way less drag on the alternator and engine.
Everything is a trade-off.
Risking an electric fan failure and roasting an engine may or may not be worth it.
On my 1st and 2nd 1986 22RE, and my heavily wheeled 1985 22R here in Arizona, I never experienced an issue where an electric fan would be a smart option.
Gnarls
- that's just my opinion, it may be worthless.
