Electrical preheating

Select your car make and model to get started with finding the right engine heater for your car.

DEFA products are available with the brand dealerships found here.

We recommend that all installations are done by a licensed installer. Incorrect installation may result in the loss of warranty on your system and on your car.

Heating the engine will start having noticeable benefits from +10 °C and below. An engine heater raises the temperature of the engine by 20-35 °C. This is true no matter what the starting temperature of the engine is. If the outside temperature is -10 °C, the engine temperature will be raised to between +15 and +30 °C.

On our Downloads page. Some manuals are also available at the product page.

On our Downloads page. Some manuals are also available at the product page.

Power consumption depends on what type of engine heater and interior heater you have. An engine heater for a regular car uses between 300-600W, while an interior heater uses between 1000W and 1200W. The battery charger used in WarmUp uses about 60W. A 15-ampere fuse (about 1800W) will cover most uses.

Yes. Your dealer can assist you in installing a battery charger. You can also install a control unit so that you can control your system from your mobile phone.

This may be caused by a ground fault. Check to see if the connection is properly grounded. The problem may be caused by the charger or the relay. Contact support if the problem persists.