Piodelo 12V Universal Auxiliary Heater 4 Ports Under Dash Heat with Speed Switch Fit for Car or Truck Minivans Excavators Harvesters, Winter Automotive Air Conditioner for Heating & Defrosting - EL-1057-S

• 【High Performance】The heater can be widely used to increase the temperature inside the car, warm the feet, defrost, and defog, high efficiency copper tube heating core helps to heat up the air through the core in seconds for quick warming. Powerful blower motor and 4-hole air vents provide strong warm air to keep the vehicle warm inside . And it is widely suitable for cars, trucks, ships, RVs, vans, excavators, harvesters, etc. 【12v Compact Heater】12 thick copper tubes can heat the air passing through the core in a few seconds, providing more heat output. The switch can adjust the air volume infinitely, heater is small in size, easy to install, energy-saving and power-saving, and low noise. Low power consumption, high thermal efficiency, does not affect the power of the original vehicle. 【Energy-efficient Heater】No fuel consumption, can provides more heat output than battery-powered heater in low electricity consumption. Make full use of hot coolant, functions in the same way as engine cooling system, environmentally friendly. 【Strong & Durable】12 volt cab heater can resist wear, shock, deformation and break, ensuring an extended service life. The smooth and flat surface allows you to wipe it with a dry cloth.Temperature of heating depends on your vehicle water temperature. Only need to hook this heater up to water tank and supply power, then works! 【Easy to Install】Comes with mounting brackets and speed control switch, support under dash installation. Switch Instruction 1: The red wire of the speed control switch is connected with positive pole of power supply and motor. Switch Instruction 2: The blue wire of the switch is connected with negative pole of motor.