Top 8 Extension Cords for Space Heaters: The Ultimate Guide!

Ted Curley
Journeymen wiremen at US Electric-International Brotherhood of Electrical Workers (IBEW)

Hello, I'm Ted Curley, a licensed electrician with a wealth of experience in the electrical field. I've launched this platform to share my extensive knowledge and insights with you. My journey in the electrical field spans over a decade, during which I have cultivated a deep understanding and expertise in...Read more

Ted Curley
Journeymen wiremen at US Electric-International Brotherhood of Electrical Workers (IBEW)

Hello, I'm Ted Curley, a licensed electrician with a wealth of experience in the electrical field. I've launched this platform to share my extensive knowledge and insights with you. My journey in the electrical field spans over a decade, during which I have cultivated a deep understanding and expertise in...Read more

Hey there! Welcome to my post on the top 8 extension cords for space heaters. If you're looking for the ultimate guide to finding the perfect extension cord for your space heater, then you're in the right place. I've done all the research and narrowed down the options to bring you the top picks. So, let's dive in and make sure you have the right cord for a cozy and safe space heating experience!

1
EP 9 Ft Appliance Extension Cord - Heavy Duty, 14 Gauge, Indoor Use, Gray
9.6
2
Electery Heavy Duty Appliance Extension Cord
9.6
3
POWTECH 12 FT Extension Cord
Summary: Reliable and safe, but limited length
BUY NOW Amazon.com
9.6
4
KUNCAN Power Extension Cord - Heavy Duty 9ft
9.6
6
Iron Forge Cable 10ft Extension Cord
9.6
7
Clear Power 6 ft Extension Cord
9.6
8
KUNCAN Power Extension Cord - Heavy Duty 14/3 AWG
9.3
1

EP 9 Ft Appliance Extension Cord – Heavy Duty, 14 Gauge, Indoor Use, Gray

$14.99
$12.99
 in stock
Amazon.com
as of March 18, 2025 5:02 pm
10
Highly recommended!
The EP 9 Ft Heavy Duty Appliance Extension Cord is a well-made and safe option for indoor use with its appropriate length and UL certification. Its nicely molded ends add to its durability.
Convenient and Reliable
  • Appropriate length for specific needs
  • Well-made with nicely molded ends
  • UL certified for safety

The EP 9 Ft Heavy Duty Appliance Extension Cord is the perfect solution for your space-saving needs. With its flat plug design, it fits snugly against the wall, allowing you to save space and use it in narrow areas. This versatile cord is not limited to specific appliances, making it a great addition to your household. It is well-made with nicely molded ends, ensuring durability that will last a long time. Plus, it is UL certified, giving you peace of mind knowing that it meets the highest safety standards.

Powerful and Versatile Extension Cord
  • 9 Ft length
  • 14 Gauge 3 Prong SPT-3 Cable Wire
  • Ideal for Air Conditioners, Refrigerators, and Major Appliances
  • Indoor Use
  • Gray color
2

Electery Heavy Duty Appliance Extension Cord

$9.97  in stock
Amazon.com
as of March 18, 2025 5:02 pm
9.8
Great choice!
The ELECTERY Heavy Duty Appliance Extension Cord is a reliable and high-quality option for powering indoor air conditioners and major appliances. With its thicker wire diameters, 3-prong grounded flat plug, and high capacity of 1875 Watts, it ensures a safe and efficient power supply. Additionally, being ETL Listed provides an extra level of assurance for its quality. The only potential drawback mentioned is that the plug orientation may block other outlets, but overall, this extension cord is a great choice for your power needs.
Convenient and Reliable
  • Thicker 14 AWG wire diameters
  • 3-Prong grounded flat plug
  • High capacity of 1875 Watt rating (15 Amps, 125V)
  • ETL Listed
Potential Drawbacks
  • Plug orientation may block other outlets
  • No further drawbacks mentioned in the reviews

The ELECTERY Heavy Duty Appliance Extension Cord is a high-quality 6 ft cord that is perfect for indoor air conditioners and other major appliances. With its thicker 14 AWG wire diameters, it can handle more amperage and has a high capacity of 1875 Watt rating (15 Amps, 125V). The cord is designed with a flat plug that can be oriented straight down, making it convenient for plugging into hard-to-reach outlets. Customers have praised the product for its fast shipping, plug orientation, and its ability to prevent overheating. It is a reliable and safe choice for all your power needs.

Powerful Extension Cord for Appliances
  • Thicker 14 AWG wire diameters
  • 3-Prong grounded flat plug
  • High capacity of 1875 Watt rating (15 Amps, 125V)
  • 6 ft length
  • Compatible with indoor air conditioners and all major appliances
  • ETL Listed
3

POWTECH 12 FT Extension Cord

$19.43  in stock
Amazon.com
as of March 18, 2025 5:02 pm
9.6
Summary: Reliable and safe, but limited length
The POWTECH Heavy Duty 12 FT Air Conditioner and Major Appliance Extension Cord is a reliable and safe option for installing large appliances and power tools. With its sturdy construction and UL Listing, it provides peace of mind and flexibility in placement. However, the limited cord length may not be suitable for all appliances.
Benefits of POWTECH Extension Cord
  • Provides flexibility in installing appliances: With the 12 FT length, this extension cord allows users to place their air conditioners or other appliances wherever they want, without limitations imposed by short power cords
  • Heavy-duty construction: The cord is designed to handle the power demands of major appliances and power tools, ensuring durability and long-lasting use
  • UL Listed for safety: The cord has been tested and certified by UL, ensuring it meets the highest safety standards and providing peace of mind to users
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Cons
  • Limited cord length
  • May not be suitable for all appliances

The POWTECH Heavy Duty 12 FT Air Conditioner and Major Appliance Extension Cord is the perfect solution for extending the reach of your appliances and electronics. With its high capacity 1875 Watt rating, you can connect multiple devices without worrying about exceeding the power limit. The sturdy construction and durable vinyl covering ensure long-lasting performance, while the angle plug allows the cord to stay flush to the wall in tight spaces. Whether you need to extend the cord of your air conditioner, power tools, or even a small treadmill, this extension cord is perfect for the job. Say goodbye to short cords and hello to convenience and flexibility!

Convenient Power Extension Solution!
  • Sturdy cord for large appliances and power tools
  • UL Listed for safety
  • Angle plug for tight spaces
  • Heavy duty construction
$19.43
in stock
as of March 18, 2025 5:02 pm
Amazon.com
4

KUNCAN Power Extension Cord – Heavy Duty 9ft

$15.99  in stock
Amazon.com
as of March 18, 2025 5:02 pm
9.6
Great Choice!
The KUNCAN Appliance Power Extension Cord is a high-quality and safe option for extending the reach of your major AC unit, air conditioner, or refrigerator. With its 9-foot length, heavy-duty wire, and low profile design, it offers convenience and durability. However, keep in mind that it may not be suitable for all appliances and has limited length options.
Convenient and Versatile
  • 9-foot length
  • Heavy-duty 14 AWG wire
  • Low profile design
Drawbacks
  • Limited length options
  • Not suitable for all appliances

This KUNCAN Appliance Power Extension Cord is a 9-foot long extension cord that is perfect for major appliances like refrigerators, ovens, microwaves, and more. It is insulated with high-quality vinyl to protect it from external factors such as sunlight, moisture, and abrasions. The flat plug design and parallel 3-core flat cord allow for easy placement of furniture and appliances close to the wall. The heavy-duty power cord is made with 14AWG 100% pure copper conductors, ensuring durability and preventing overheating. It also comes with a 3-prong plug and grounded outlet for added safety. With its modern design and durable material, this extension cord is perfect for use in your home, kitchen, garage, or any indoor space. Plus, KUNCAN offers 18 months warranty and 24/7 customer service for your satisfaction.

Convenient and Reliable Power Solution!
  • 9-foot length
  • Insulated with high-quality vinyl
  • Grip grooves for easy connection
  • Heavy-duty 14 AWG wire
  • Low profile design
  • Grounded for safety
5

ELECTERY 12 Ft Appliance Power Extension Cord

$17.45  in stock
Amazon.com
as of March 18, 2025 5:02 pm
9.6
Conclusion: Overall, a solid choice
The 12 Ft Appliance Power Extension Cord by ELECTERY is a safe and reliable option with a high voltage grey outlet, heavy duty 14 gauge wire for durability, and a convenient 12 ft length for extended reach. However, the wattage rating may require extra precautions to prevent fire hazards and it may not be suitable for all appliances with shorter cords.
Convenient and Versatile
  • Safe and reliable with a high voltage grey outlet
  • Heavy duty 14 gauge wire ensures durability
  • Convenient 12 ft length for extended reach
Potential Drawbacks
  • Wattage rating may require extra precautions to prevent fire hazards
  • May not be suitable for all appliances with shorter cords

This 12 Ft Appliance Power Extension Cord from ELECTERY is a high-quality cord that can handle more amperage thanks to its thicker 14 AWG wire diameters. With a wattage rating of 1875 Watts (15 Amps, 125V), this cord is capable of powering heavy-duty appliances. It's perfect for linking additional extension cords, power strips, or surge protectors. Customers have praised its durability and reliability, mentioning that it's ideal for powering full-size refrigerators in RVs and other powerful appliances that require a few extra feet of cord length.

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Extend and Power Your Appliances
  • 12 ft length
  • Heavy duty 14 gauge wire
  • High voltage grey outlet
  • 3 prong grounded flat plug
  • Rated for 1875W power
  • Powered by ELECTERY
6

Iron Forge Cable 10ft Extension Cord

 in stock
Amazon.com
9.6
Solid choice
The Iron Forge Cable White Extension Cord is a great choice for both indoor and outdoor use. With its 10-foot length, it offers the perfect amount of extension, and its sturdy construction ensures durability. The only downsides are the limited color options and slightly higher price compared to other similar products. Overall, a reliable and well-made extension cord.
Convenient and Reliable
  • Right length
  • Sturdy
  • Color and durability
Drawbacks
  • Limited color options
  • May be slightly more expensive compared to other similar products

This Iron Forge Cable White Extension Cord is a versatile and reliable choice for all your indoor and outdoor power needs. With its weatherproof SJTW rating, this 10-foot cord is perfect for use in any environment. I love the sleek white color and appreciate the durability it offers. It arrived exactly as described and feels sturdy in my hands. Plus, the length is just right for my needs. Whether I'm using it for my space heater, holiday lights, or home office equipment, this extension cord gets the job done. Trust me, you won't be disappointed with this product.

Powerful and Versatile Extension Cord
  • 10-foot length
  • 3-prong design
  • Weatherproof rating (SJTW)
  • Suitable for indoor and outdoor use
  • Can support up to 13 Amp
  • US Veteran Owned
7

Clear Power 6 ft Extension Cord

 in stock
Amazon.com
9.6
Overall
The Clear Power 6 ft 14/3 Gray Air Conditioner/Major Appliance Indoor Extension Cord is a great choice for high energy consuming appliances with its 3-prong grounded plug and 6 ft length. However, some customers have reported receiving the product with dirt marks and cuts on the cord, and it may not be suitable for heavy-duty appliances like microwaves.
Convenient and Reliable
  • Suitable for high energy consuming appliances
  • 3-prong grounded plug
  • 6 ft length
Limitations
  • Some customers have received the product with dirt marks and cuts on the cord
  • It may not be suitable for heavy-duty appliances like microwaves, as a heavy-duty cord is recommended for that purpose

This Clear Power 6 ft 14/3 Gray Air Conditioner/Major Appliance Indoor Extension Cord is a heavy-duty grounded cord with double-thick insulation to protect against heat build-up. It features a 3-prong grounded plug and is suitable for high energy consuming appliances. The flat plug design allows for easy placement of furniture and appliances. Customers have found it to be a reliable choice for extending cords for appliances like microwaves, with no reported issues in long-term use. However, one customer received a used cord with some marks and cuts, but they plan to purchase again for a new one. Overall, this cord is a safe and effective choice for powering AC units and major appliances.

Convenient and Versatile Power Solution
  • 14 gauge wire
  • Double-thick insulation
  • 3-prong grounded plug
  • 6 ft length
  • Flat plug
  • Suitable for high energy consuming appliances
8

KUNCAN Power Extension Cord – Heavy Duty 14/3 AWG

$15.99  in stock
Amazon.com
as of March 18, 2025 5:02 pm
9.3
Great choice!
The KUNCAN Appliance Power Extension Cord is a reliable and convenient solution for powering appliances. With its exceptional build quality and durability, it provides peace of mind. The generous 9 ft length allows for flexible placement, although some users may find it too short for their specific needs. Additionally, the low profile flat cable design may not be suitable for all setups. Overall, it is a great option for AC units, air conditioners, and refrigerators.
Enhanced Power Accessibility
  • Reliable and convenient solution for powering appliances
  • Exceptional build quality and durability
  • Generous length for flexible placement
Possible Heading: Drawbacks
  • Drawbacks:
  • Some users may find the 9 ft length of the cord to be too short for their specific needs
  • The low profile flat cable design may not be suitable for all setups

The KUNCAN Appliance Power Extension Cord is a heavy-duty and reliable solution for powering major appliances such as air conditioners and refrigerators. With its 14/3 AWG parallel 3-prong design and double-thick insulation, this extension cord ensures durability and protection against heat build-up. Its generous 9-foot length provides ample reach, allowing for convenient placement of appliances without worrying about proximity to the power outlet. The cord delivers a steady and uninterrupted power supply, ensuring optimal performance and functionality of your appliances. Additionally, the three-prong design guarantees a secure and stable connection, minimizing the risk of accidental disconnection.

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Powerful and Reliable Extension Cord
  • Heavy-duty 14/3 AWG wire
  • Low profile flat cable design
  • US plug male to female extender
  • Grounded wire for safety
  • Suitable for AC units, air conditioners, and refrigerators
  • 9 ft length

Explore Your Options

All your burning questions about extension cords for space heaters, answered!

What is the maximum wattage that an extension cord for a space heater should be able to handle?

The maximum wattage that an extension cord for a space heater should be able to handle depends on the specific requirements of the space heater. It is important to check the manufacturer's instructions or the product label for the recommended wattage. However, as a general guideline, it is recommended to use an extension cord that is rated for at least the same wattage as the space heater or higher to ensure safe operation.

Can I use any regular extension cord with my space heater, or do I need a special one?

Great question! When it comes to using an extension cord with a space heater, it's important to use a special one. Regular extension cords are not designed to handle the high power demands of space heaters. You should look for an extension cord that is specifically rated for use with space heaters. These cords are usually labeled as “heavy-duty” or “appliance-grade.” They have thicker wires and are designed to handle the extra load, reducing the risk of overheating or electrical hazards. So, to ensure safety and proper functioning, it's best to use a special extension cord made for space heaters. Stay warm and safe!

How do I determine the appropriate length and gauge of extension cord I need for my specific space heater?

To determine the appropriate length and gauge of extension cord for your specific space heater, there are a few factors you need to consider. First, check the wattage or amperage rating of your space heater, which can usually be found on the product label or in the user manual.

Next, you'll need to determine the distance between the power outlet and the location where you plan to use the space heater. Keep in mind that the longer the distance, the more resistance the cord will have, which can lead to voltage drops and potentially damage your heater or cause a fire hazard.

To find the right gauge of extension cord, you can refer to a wire gauge chart that indicates the appropriate gauge based on the amp rating and length of the cord. Generally, the higher the amperage or wattage of your space heater, the lower the gauge number of the extension cord you should use.

It's important to note that using an extension cord is not recommended for all types of space heaters. Some manufacturers advise against using extension cords altogether. If this is the case, it's best to follow the manufacturer's instructions for safe and proper usage of your space heater.

If you're unsure about any of these details or need further assistance, I would recommend consulting with a licensed electrician to ensure that you choose the appropriate extension cord for your specific space heater and electrical setup. Safety is paramount when dealing with electrical appliances, so it's always better to be safe than sorry.

Ted CurleyJourneymen wiremen at US Electric-International Brotherhood of Electrical Workers (IBEW)

Hello, I'm Ted Curley, a licensed electrician with a wealth of experience in the electrical field. I've launched this platform to share my extensive knowledge and insights with you. My journey in the electrical field spans over a decade, during which I have cultivated a deep understanding and expertise in various roles. Let me take you through my journey and my passion for electricity and space heaters. If you have any questions, feel free to drop me a line at ted.curley@tedreviews.com

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