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4 Things to Know About Extension Cords for Window Air Conditioners

  1. Use a 12-gauge cord Window air conditioners pull high current, especially on startup. A 12-gauge cord rated for at least 15 amps is the safest choice for most units.

  2. Keep the cord as short as possible Longer cords increase resistance and heat. Six feet or shorter is ideal.

  3. Avoid thin-gauge cords Never use a 16-gauge light-duty cord. It can overheat, cause voltage drop, or start a fire.

  4. Don’t cheap out on the cord A 14-gauge cord might work for small 5,000 BTU models, but 12-gauge is still safer. The wrong cord risks your circuit and safety.

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