Skip to content

Can you use an extension cord with an inflatable hot tub?

can you use an extension cord with an inflatable hot tub

Inflatable hot tubs are a fantastic way to enjoy the luxury of a spa experience in the comfort of your own home or garden. However, a common question arises regarding their power supply: is it safe to use an extension cord with an inflatable hot tub? This article delves into the safety aspects and provides tips for using extension cords with inflatable hot tubs.

Understanding the Power Needs of Inflatable Hot Tubs

Inflatable hot tubs typically require a significant amount of power to operate efficiently. They need a stable and reliable power source to heat the water, run the pump, and operate jets if available. This high power demand is crucial when considering using an extension cord.

The Risks of Using Extension Cords

  1. Overloading: Extension cords can become overloaded by the high power draw of a hot tub, leading to overheating and potential fire hazards.
  2. Electrical Safety: Using an extension cord outdoors, especially near water, increases the risk of electrical shocks.
  3. Damage to the Hot Tub: Inconsistent power supply can damage the hot tub’s heating and filtration systems.

Guidelines for Using Extension Cords with Inflatable Hot Tubs

If you must use an extension cord, follow these guidelines to minimize risks:

1. Use a Heavy-Duty Extension Cord:

  • Opt for a cord that is rated for outdoor use and can handle the wattage of your hot tub.
  • The cord should be a heavy-duty type, preferably with a gauge of 12 or lower.

2. Keep it Short:

  • The shorter the extension cord, the less the voltage drop and the safer it is. Aim for a cord no longer than 15 feet.

3. Weatherproofing:

  • Ensure the extension cord is suitable for outdoor use. It should have a waterproof rating and be designed to withstand temperature changes.

4. Grounded Plug:

  • The extension cord must have a grounded plug to prevent electrical hazards.

5. Direct Route:

  • Lay the extension cord along a direct route to avoid tripping hazards and protect it from being pinched or damaged.

6. Regular Inspections:

  • Frequently inspect the extension cord for any signs of wear, tear, or damage.

7. Consult the Hot Tub Manual:

  • Always refer to the manufacturer’s guidelines regarding power sources and extension cord use.

8. Professional Advice:

  • If in doubt, consult with an electrician to ensure safe practices.

Alternatives to Extension Cords

  • Installing an Outdoor Outlet: Consider installing a dedicated outdoor outlet closer to the hot tub’s location.
  • Using a Generator: A portable generator can be an alternative power source for locations far from a fixed outlet.


While using an extension cord with an inflatable hot tub is not generally recommended due to safety concerns, if necessary, it should be done with caution and adherence to safety guidelines. Opting for a heavy-duty, short, and outdoor-rated extension cord can mitigate some risks. However, the safest approach is always to use a dedicated power outlet close to the hot tub. Prioritize safety to ensure a relaxing and hazard-free hot tub experience.