Having a portable window heater defroster on colds days can be very handy to have.
There are may units available most of which are 12 volt units that sit on the dashboard.
One thing to keep in mind is that 12 volt systems don’t put out a lot of energy and so can be slow when it comes to defrosting a window.
It really comes down to how cold it gets as to how well one works. With that said even if the heat they put out is low they do still give out some.
A 12 volt electric heater can never replace a car heater but help speed defrosting along.
Everyone will have a different experience with 12 volt window defrosters, so be sure to read the reviews on Amazon or elsewhere to be sure a unit is a good fit for you.
Our Picks for Best Portable Car Window Defroster
Zento Deals 2 in 1 12V Portable Swing-out Handle Heater and Defroster Fan
Zento makes this small unit that can sit on the dashboard or the handle can be used that pulls out.
While the heat it puts out will be minimal, as long as 12 volt units are understood it works well at its task.
FeelGlad(TM) 12V Portable Ceramic Car Heater Fan and Defroster
This small unit from FeelGlad puts out a 150W to help defrost a window.
It simply plugs into a vehicles cigarette lighter and is ready to be used.
Wagan Visor-Mounted Heater/ Defroster
Wagan is another known maker of 12 volt window defrosters.
They make good units including this one that helps when the weather turns cold.
When is comes to 12 volt electric car heaters getting to know your vehicles cigarette lighter system is a good thing to do.
A fuse will go to the cigarette lighter to protect the wiring and they can vary from 10-15 Amps.
How many amps a heater can draw is important since the more amps the more the heat given out.
Don’t ever insert higher amp fuses as a vehicles as every car or truck was designed in a specific way to protect it.
Most portable units will use between 6 and 8 amps as to not overload a system but it is always best to check to be sure.
Also never run a unit without the car running or else the the battery will likely get drained and be unable to start the car.
Be sure to read the comments and reviews on Amazon or elsewhere to be sure unit is a good fit for you and your vehicle.