How To Look At A House
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What is maximum power cord length to a window or wall room air conditioner?
Monday, May 4, 2020
The maximum length for a power cord to a room air conditioner is 10-feet for 120V units, and 6-feet for 240V, per 2017 National Electrical Code (NEC440.64). Here’s the complete citation:
440.64 Supply Cords. Where a flexible cord is used to supply a room air conditioner, the length of such cord shall not exceed 3.0 m (10 ft) for a nominal 120-volt rating or 1.8 m (6 ft) for a nominal 208- or 240-volt rating.
Also, see our blog posts What are the most common problems with wall/window air conditioners? and What is the average life expectancy of a package unit heat pump or air conditioner? and Can I run a window air conditioner on a portable generator?
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To learn more about heating and air conditioning systems, see these other blog posts:
• How can I find out the SEER of my air conditioner?
• My air conditioner won't turn on. What's wrong?
• How can I find out the size of my air conditioner?
• How can I tell whether the condenser (outdoor unit) is an air conditioner or heat pump?
• Where is the air filter for my central air conditioner and furnace? I can’t find it?
• Does an old air conditioner use more electricity as it ages?
• How did homes stay cool in Florida before air conditioning?
• What is wrong with an air conditioner when the air flow out of the vents is low?
• Why has the thermostat screen gone blank?
• Why does it take so long to cool a house when an air conditioner has been off for a while?
• Why is my air conditioner not cooling enough?
• What are the most common problems with wall/window air conditioners?
• Will closing doors reduce my heating and cooling costs?
Visit our HEATING AND AIR CONDITIONING page for other related blog posts on this subject, or go to the INDEX for a complete listing of all our articles.
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