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Last updated on October 22nd, 2026.
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Spending over $500 on a washing machine is wasted money if it blows up after the first electrical surge.
A washing machine surge protector protects the appliance from overcurrent events and electrical surges.
A high-quality washing machine surge protector has a lifetime warranty, conforms to UL 1449 safety standards and provides over 800 joules of surge protection.
A faulty surge protector gives a false sense of security. Your washing machine will be destroyed when an electrical surge occurs.
We reviewed the Top 6 Surge Protectors For Washing Machine & Dryers of 2026.
Use the comparison to choose a surge protector for your washing machine.
Compare each washing machine surge protector’s sockets and safety rating.
Top 6 Best Surge Protectors For Washing Machines & Dryers
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What to Look For in a Washing Machine & Dryer Surge Protector
Check the following features when choosing a surge protector for your washing machine & dryer:
Number of Sockets
If your washing machine and dryer sit together, you need two sockets. A single-socket surge protector may leave you needing a multi-plug extension, adding cost and taking up space. Count the sockets you need before choosing a protector.
Safety Rating
Several organizations set safety standards. For washing machine and dryer surge protectors, check the UL standard from Underwriters Laboratories, which addresses appliance safety.
UL is among a number of businesses approved to perform safety testing by the U.S. federal agency Occupational Safety and Health Administration (OSHA). OSHA has a list of authorized screening labs, which are acknowledged as Nationally Recognized Testing Laboratories.
Even within UL though, there are a bunch of security requirements that could apply. For appropriate washing machine & dryer surge protection, you generally want the UL 1449 safety standard.
UL 1449 is the Underwriters Laboratories Safety Standard for Surge Protective Devices (SPD), which applies to washing machine & dryer surge protection.
Make sure your washing machine & dryer surge protector conforms to UL 1449.
Warranty
A warranty gives you a way to claim if the product fails. A longer term also suggests that the manufacturer expects the surge protector to last and protect your appliances over time.
When comparing warranties, consider what the term suggests about the supplier’s confidence in its washing machine & dryer surge protector.
If suppliers provided generously long guarantees for washing machine & dryer surge protectors that went bust after 2 weeks, they would not be around for long.
Look for a long warranty and high insurance coverage payouts from a washing machine & dryer surge protector supplier that has been operating for more than five years.
Clamping Voltage
Clamping voltage is the threshold at which a surge protector starts limiting the voltage reaching your washing machine and dryer. It protects the appliances from overvoltage damage.
For example, a washing machine & dryer surge protector might limit a 6,000 V surge to 600V at the load. Its clamping voltage in this example is 600V.
If the clamping voltage is too high, the surge protector will let excessive voltage reach your washing machine & dryer and break it.
Check your washing machine & dryer’s maximum rated voltage before buying a surge protector. Its clamping voltage must be LOWER than the appliance’s maximum operating voltage.
In general, a washing machine & dryer surge protector must have a clamping voltage LESS than 700V.
Joule Rating
The joule rating measures how much energy a surge protector can absorb and neutralize. A higher rating provides more protection from power spikes that could damage your appliances or affect their performance.
The joule rating you need depends on what you are protecting, whether a PC, washing machine & dryer or a whole home.
Here are some rough joule rating standards:
- A system with as much as 1000 joules of surge protection is enough for little electronics.
- A surge protector with 1000 to 2000 joules will provide adequate protection for washing machines & clothes dryers, office devices and power tools.
- Consider the highest joule rating (2000+) for pricey gaming consoles, house theater systems and any computer that saves important data. Anything that is extremely expensive or irreplaceable.
So for your washing machine & dryer surge protector, look for a joule rating between 1000 to 2000.
Diagnostic LEDs
It would be best if you had a way to validate that your washing machine & dryer surge protector is working. Diagnostic LEDs provide that check.
Search for washing machine & dryer surge protection that includes diagnostic LED lights that show power, protection and line fault status at a glance.
EMI/RFI Noise Filtering
EMI = Electromagnetic Interference, while RFI = Radio Frequency Interference. Although these terms are utilized interchangeably, they’re technically not the exact same thing. For the purposes of washing machine & dryer surge protection however, we can treat them alike.
Many filters, such as low pass filters, high pass filters or band pass filters, allow specific kinds of frequencies through, meaning a set range of EMI/RFI emissions will be transferred to the device being safeguarded.
This is since certain EMI/RFI emissions will not interfere with the performance frequencies of various electrical and electronic gadgets.
EMI/RFI noise filtering aims to eliminate electromagnetic and radio frequency interference that interferes with washing machine & dryer surge protection.
So look for washing machine & dryer surge protectors that have EMI/RFI emissions.
