Having a portable window heater defroster on colds days can be very handy to have.
There are many 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 vehicles built-in heater but can 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.
*This post contains affiliate.
Our Picks for Best Portable Car Window Defroster
- Wagan EL6311
- Estink 12V Car Heater Fan
- HITOPTY 12v Electric Car Dash Fan
Wagan EL6311 12V Portable Fan/Defroster with Folding Handle, 1 Pack
Wagan makes this small unit that can sit on the dashboard or a 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 does what it is built to do.
12V Car Heater Fan,150W Portable Car Auto Vehicle Electronic Heater or Fan 2 In 1 Heating Cooling Function Windshield Demister Defroster (Black)
This small unit is built to to help defrost a window.
It simply plugs into a vehicles cigarette lighter and is ready to be used.
It sits on a dashboard pointed at a window to help defrost it with an output of 150 watts.
HITOPTY 12v Electric Car Dash Fan with Cigarette Lighter Plug for Auto Sedan Vehicle Pickup Van
This unit for HITOPTY is not a heater but a 2 speed fan that blows out a lot of air.
Since 12 volt window defrosters don’t put out much heat a good fan can be a good alternative.
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.