What products can we assist you with?

Frequently asked questions

• How do I find the right engine heater for my car?

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

• Where can I purchase DEFA products and have them installed?

  DEFA products are available with the brand dealerships found here.

• Can I install WarmUp myself?

  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.

• At what temperature should I start using the engine heater?

  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.

• Where can I find the user manual for my DEFA product online?

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

• Where can I find the installation instructions for my DEFA product online?

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

• How much power does WarmUp consume?

  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.

• I already have a DEFA engine heater and interior heater, is it possible to add a battery charger to my system?

  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.

• The cable icon in my DEFA app does not turn green even though the cable is connected to my car. Why?

  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.