Does the car heater have any impact on the vehicle?

[DeElliot]

Car heaters do have an impact on the vehicle. Impact on the battery: If a car heater is used for an extended period when the battery is already at a low charge level, it can damage the battery. Therefore, it is important to monitor the usage time of the car heater, reserve some battery power, and charge the battery promptly to ensure power is available for other devices. Timely charging: To avoid damaging the battery, pay attention to the usage time of the car heater and ensure the battery is charged in a timely manner. Additionally, when selecting a car heater, choose one that matches the battery capacity and avoid using a heater with excessive power. Frequent overuse of the battery, leading to power depletion, will shorten the battery's lifespan.

[ArabellaLynn]

I think the impact of car heaters is quite worth pondering. Having driven for over a decade, I've noticed these small appliances mainly consume engine power, especially in older cars - you can clearly see the RPM increase when turning on the heater, with fuel consumption rising noticeably too, particularly during long trips. As for those plug-in types using the cigarette lighter, they drain the battery extremely fast. I once forgot to unplug it after turning off the engine, and within half an hour the battery was too weak to start the car - that's why I later specifically bought a smart auto-cutoff model. The one I use now comes with overheat protection, and I only feel at ease when the wires don't get hot to the touch. When the weather gets cold, I'd still recommend using the car's built-in heating system - once the engine warms up, that's truly worry-free and safe.

[Bethany]

From a power supply perspective, car heaters are quite picky about vehicle models. I've tested it myself - the standard 12V cigarette lighter socket can barely handle 150W at most, while most car electric heaters consume over 100W. If you're running navigation, a dashcam, and plug in a heater simultaneously, the battery will definitely be overloaded. Last week I tried it in a friend's older car - the cigarette lighter plastic started softening within five minutes, so I quickly unplugged it in panic. Some newer car models now come with 200W sockets, but you still need to check if the fuse can handle it. Honestly, I'd recommend preheating the car and using the factory-installed heating system instead - it's the safest option. Although it takes 3-5 minutes to get warm air, at least you won't risk overloading the electrical system and causing smoke.

[ElijahDella]

Tested three types of car heaters and found that they indeed interfere with the air conditioning system. Once, I clipped a vent-mounted heater onto the dashboard, which directly blew onto the cabin temperature sensor. The car's computer misread the temperature as soaring to 40°C, causing the automatic air conditioning to shut down completely. A friend at a modification shop told me this could also lead to premature failure of the blower motor. Now, I avoid placing the heater near the vents and instead position it on the floor mat, blowing upwards. The most frustrating part is that windshield defogging becomes slower—the warm air heats the outer glass, making it more prone to frost, requiring manual scraping. It's far less convenient than the factory one-touch defogging feature.