Your clothes dryer already has a 240-volt outlet, the same voltage a Level 2 charger uses, and it sits idle most of the day. A smart splitter is a box that lets the dryer and an EV charger share that one outlet by making sure only one of them draws power at a time. It is one of the cheaper ways to get Level 2 charging when your electrical panel is full, and it is worth understanding exactly what it does and does not do before you buy one.
How a splitter works
The splitter plugs into the dryer outlet. The dryer plugs into one socket on the splitter and the EV charger into the other. When the dryer starts, the splitter cuts power to the charger, lets the dryer finish its cycle, then restores power to the charger. The dryer always wins.
Two details matter. First, a splitter is not an EV charger (the proper term is EVSE) and it cannot signal your car. It only opens and closes a switch, so the car sees the charger go dark and come back. Most cars resume charging on their own when power returns, but check that yours does before you rely on it for an overnight charge. Second, the splitter does not set the charging current. Use a plug-in charger rated for 24 amps or less, or one you can set to 24 amps. A charger that defaults to 32 amps or more on a 30-amp dryer circuit can trip the breaker.
How fast you will charge
Most dryer circuits are 30 amps. A charger on a continuous load is limited to 80 percent of the breaker rating, which is 24 amps. At 240 volts (some apartment buildings supply 208) that is about 5.8 kilowatts, or roughly 20 miles of range added per hour for a typical electric car (efficient cars somewhat more, trucks and large SUVs less). Over a ten-hour night with the dryer idle, that is up to around 150 to 200 miles of range, limited by your battery size, charging losses and the slowdown near a full battery. That covers the daily driving of most households.
If the dryer is in use a few hours a week, you lose little. If a household runs dryer loads most evenings and most nights, the charger loses those hours, so count them against your daily mileage.
A dedicated 40-amp or 50-amp circuit with a hardwired charger would be faster; see amperage and charging speed and hardwired versus plug-in chargers. The question is whether the extra speed is worth the extra installation cost for the way you drive.
What it costs
Splitter pricing is set by the seller and moves around, so treat these as a snapshot. On November 4, 2026, retailers listed NeoCharge's NEMA 10-30 dryer-and-EV splitter at about $299 to $329 on sale, against list prices of $389 to $459. A 2020 press price of $424 to $474 is out of date. The manufacturer's own pricing pages were not reachable when this was written, so confirm the current price with the seller.
You also need the charger itself, and a plug-in model that matches the dryer outlet's plug type or an adapter. That plug type depends on your home: newer dryer circuits use four slots (NEMA 14-30) and older ones use three (NEMA 10-30). The splitter is sold for both, so order the one that matches your outlet. Look at your dryer's cord and outlet, or ask an electrician, before ordering.
For comparison, the installation costs of a new dedicated circuit and a panel upgrade are covered in what a home charger installation involves and do you need a panel upgrade.
Rebates
Some utilities pay toward circuit-sharing devices. The clearest example is the Sacramento Municipal Utility District (SMUD), whose Charge@Home program offers up to a $200 rebate on a listed circuit-sharing or energy management device. SMUD publishes a qualified product list, last updated October 26, 2026, and the NeoCharge Smart Splitter is on it, along with a hardwired energy management device from simpleSwitch. SMUD's listing requires the device to be new, installed for the first time at an eligible SMUD address, certified by a nationally recognized testing laboratory, and carry at least a two-year warranty. SMUD says it does not endorse the products on its list. Read SMUD's current terms before buying, because the charger setup requirements and one-per-address limits sit in the program terms, not the product list.
Other utilities and community energy programs have offered splitter rebates at various times, and the manufacturer says more than 30 utilities participate, but that figure comes from the seller, not from the utilities. We could not confirm a current rebate amount at any utility other than SMUD, so check your own utility's EV page before counting on one. Our guide to utility charger rebates explains how these programs are structured, and the federal home charger credit is no longer a factor for new installations.
The code and permit question
Vendors sometimes say a splitter needs no electrician. That can be true for the act of plugging it in, but it does not settle every question. Splitters are generally treated as a form of automatic load management under the National Electrical Code (Section 625.42 in recent editions), so buy a unit with a recognized safety listing, as SMUD requires for its rebate. How your local inspector treats a shared circuit vary by edition and jurisdiction, and the charger you plug in still has to be rated for the outlet. Our smart load management guide covers the code background. Before you buy, confirm three things with a licensed electrician or your building department: that the dryer circuit and outlet are in good condition for years of added use, whether your jurisdiction expects a permit or inspection, and whether your homeowner's insurer or any rebate program has installation requirements.
When a splitter beats the alternatives
A splitter is a good fit when your electrical panel is nearly full, the dryer is near where you park, and a slower overnight charge covers your driving. It avoids new wiring, and it travels with you if you move, which suits renters where the landlord allows it.
It is a poor fit when you drive long daily distances, run the dryer most nights, or want the fastest home charging. In those cases, compare a whole-home load manager, which throttles the charger instead of cutting it off, or a dedicated circuit once you know your panel's real capacity.
Last factually verified: November 4, 2026. Re-checked today: SMUD's circuit-sharing device qualified product list (updated October 26, 2026, read directly from the PDF) and SMUD's EV page for the up to $200 rebate; retailer listings for splitter prices (homeoutletdirect.com, reach.dog) and an Electrek report on the unit's operation. Not reachable: NeoCharge's own product and pricing pages (they returned a rate-limit error), so the price range and the 30-amp and 24-amp operating figures rest on retailer and press descriptions, and the 30-plus utility count is the seller's own claim. Not checked: SMUD's full Charge@Home terms and any other utility's current splitter rebate. The range-per-hour and overnight figures are our arithmetic from 24 amps at 240 volts.
evcharginghelp.com is editorially independent and receives no compensation from any company mentioned.