Can you put a dehumidifier on a smart plug?

Two answers circulate, and one brand is answering for everyone#

The search result most people see first is DeLonghi's: "NO, we do not recommend using a SmartPlug on these units." Read as a general rule, that sounds like dehumidifiers and smart plugs do not mix, and the usual explanation offered for it is that a dehumidifier with digital controls will sit dark when the plug turns power back on.

DeLonghi's own FAQ says otherwise on that point. Asked whether a DeLonghi dehumidifier starts by itself after a blackout, it answers: "If your model is equipped with this feature, yes, the unit will start automatically once power is restored." So DeLonghi's no is not about restart, and the FAQ gives no other reason. It is a maker's instruction for its own units, and it holds for those units. It is not evidence about a GE or a Frigidaire.

The second answer says any 15 A smart plug will do, because a 50 pint dehumidifier draws about 5 A. That reads the wrong line on the plug. The 15 A is a resistive rating, for heaters and lamps. A dehumidifier is a refrigeration compressor and a fan, and plug makers give motors a separate, much lower limit. That limit, not the 15 A, is the one to compare.

So the question splits in two, as it does for a window air conditioner: will the unit come back on when the plug does (for every unit read here that documents it, yes), and is the plug rated for the compressor (for most "15 A smart plugs", not on a 35 or 50 pint unit).

Will the dehumidifier turn back on?#

Restart behavior and rated amps as each maker publishes them, read in October 2026. Amps are at 115 V unless stated.

GE's wording is the same across three manuals and fifteen years: the 2021 APHR50 manual, the 2019 APEL50/APEW50/APER50 manual and the 2006 AHK30 to AHK65 manual all say that after "a power outage or interruption, the unit will automatically restart, in the settings last used, after the power is restored." A smart plug cutting power and restoring it is, to the dehumidifier, an interruption.

Two things in that table catch people out:

1. Watts and amps do not always agree on the same sheet. Frigidaire's FHDD5033W1 sheet prints 2.2 A and 545 W at 115 V. Dividing 545 W by 115 V gives 4.7 A, more than double the printed figure, and LG prints 5.0 A for its own 545 W, 50 pint units. Plan on the higher figure. Frigidaire's FFAD3533W goes the other way (5.3 A against 380 W at 120 V), and for a plug the larger number is still the one to use.
2. Pints do not set the amps. Two 50 pint GE units with built-in pumps are rated 5.0 A and 7.2 A. Read the model's own sheet or nameplate.

Is the plug rated for a compressor?#

TP-Link's load FAQ sets out the general rule. Its plugs are "designed primarily for resistive loads", are "not suitable for high-power inductive loads driven by motors", and before using a motor-driven appliance it recommends "checking the device's horsepower (HP) rating to ensure it does not exceed the plug's supported load capacity." Dehumidifiers are not on its list of named examples, but it runs on a refrigeration compressor, which GE's manuals describe cycling off to defrost and restarting, and every compressor start is a motor start.

A horsepower rating means little next to a dehumidifier's nameplate, which gives amps. NEC Table 430.248 converts one to the other for single-phase motors at 115 V: 1/6 HP is 4.4 A, 1/3 HP is 7.2 A, 1/2 HP is 9.8 A and 3/4 HP is 13.8 A. The same conversion is used on the refrigerator page and the sump pump page.

Set the two tables side by side:

• A 1/6 HP plug (4.4 A) covers the 22 pint Frigidaire FHDD2233W1 at 2.1 A, and the FHDD5033W1 only if you believe its 2.2 A rather than its 545 W. It does not cover the 5.0 A GE and LG 50 pint units, the 5.3 A Frigidaire 35 pint or the 7.2 A GE APEL50LZ, which is 1.6 times the plug's motor rating.
• A 3/4 HP plug (13.8 A) such as the Leviton D215P covers every unit in the table, with the 7.2 A APEL50LZ at 52% of its motor rating.
• The Zooz ZEN15 is the only plug read here whose maker names dehumidifiers as a suitable load. Its manual gives 15 A and 1800 W without a horsepower figure, and its overload protection only acts above 16.5 A, so nothing in the table comes near tripping it.

TP-Link adds one more condition: for "continuous long-term operation", keep the connected load "at 80% or less of the maximum rated power". A basement dehumidifier in August is about as continuous as a household load gets. Applying that 80% to a 1/6 HP motor rating gives 3.5 A, which still leaves the 22 pint unit with room and still rules out every 50 pint model read here.

What the dehumidifier makers say about the outlet#

None of the manuals read mention smart plugs. GE's are specific about what goes between the dehumidifier and the wall:

• The 2019 and 2021 GE manuals say "DO NOT use an extension cord with this Dehumidifier" and "DO NOT use surge protectors or multi-outlet adaptors with this Dehumidifier."
• All three GE manuals say the dehumidifier "should always be plugged into its own individual electrical outlet", which "prevents overloading house wiring circuits, which could cause a fire hazard from overheated wires."
• The 2006 GE manual is softer: it "strongly" recommends against an extension cord, and if one must be used, it has to be a UL-listed, 14 gauge, 3-wire grounding cord rated at least 15 A and 125 V. The newer manuals drop that allowance.

GE says nothing about smart plugs either way, but a plug is one more connection in series with a load that may run for days: straight into the wall, alone on that outlet, never into a power strip. The same logic is on the space heater page, where the heater makers are stricter still.

The three-minute delay, and why the plug is not a humidistat#

GE's troubleshooting table explains that after power returns "there is a protective time delay (up to 3 minutes) to prevent tripping of the compressor overload." Two things follow:

• Do not judge the switch-on by the first minute. Fan running, no water in the bucket, is the delay working.
• Do not replace the unit's humidistat with the plug. An automation that cuts power at 45% relative humidity and restores it at 50% turns every cycle into a full compressor start through the plug's relay. The dehumidifier already does this itself: GE's manual says it "automatically turns off" when it "has reached its set humidity level". Set the target humidity on the unit, not Continuous or Nonstop, and use the plug for hours and seasons only. Automation design has the general rule against automations that fight a device's own control loop.

A humidity reading is still useful for the automation, just not as the switch. Put a separate sensor where the damp matters, away from the dehumidifier's own exhaust; the sensors guide covers why placement decides whether a humidity sensor is right.

The bucket-full alert a metering plug cannot give you alone#

The most requested use after scheduling is a notification when the bucket is full. GE's manual says the dehumidifier "will turn off automatically when the bucket is full", so its power draw falls, and a metering plug sees that.

The catch is in the same manual's troubleshooting table, which gives two causes for one symptom: the unit "has reached its set humidity level or bucket is full", and "automatically turns off when either condition occurs." Power alone cannot tell you which. A dry room and a full bucket look identical to the plug.

Pair the plug with the room sensor:

1. Read the plug's running power

   Note the watts with the compressor on, and what it falls to when the unit stops. Use the plug's own readings, not the nameplate.

2. Watch for the drop

   Trigger when power stays near the stopped level for longer than a normal humidistat pause, ten minutes or so.

3. Check the room

   If the room sensor still reads well above the target you set on the unit, the dehumidifier stopped for another reason, and on a bucket model the likely one is a full bucket. Notify.

4. Leave the plug on

   The alert never switches anything. A full bucket already stops the unit safely.

On a model with a built-in pump or a drain hose, the same logic catches a kinked or blocked hose: GE lists a flashing bucket light and alarm when the drain hose is kinked.

Which plug, and how to set it up#

Read the dehumidifier's rated amps on the nameplate or spec sheet, and take the watts divided by 115 if that number is higher. Then:

1. Under 3.5 A, a 1/6 HP plug fits on paper, though TP-Link's FAQ still steers motor loads away from its plugs.
2. Up to about 11 A, a 3/4 HP plug such as the Leviton D215P fits within 80% of its 13.8 A motor rating.
3. On a Z-Wave hub, the Zooz ZEN15 is the plug whose maker names dehumidifiers. Leave its parameter 21 at the default, which "remembers the status prior to power outage", if the dehumidifier is on a schedule, or set it to 1, which "automatically turns ON once power is restored", if it should simply always run. A Z-Wave plug on a local hub such as Home Assistant keeps the schedule running with the internet down, for the reasons in local versus cloud control.

A dehumidifier is a reasonable smart plug load in a way a refrigerator or a sump pump is not: when the plug fails off, the room gets damper over days. That is why it sits on the scheduling list in what smart plugs are for, not the must-not-stop list. It is still no reason to run a 7.2 A unit through a 4.4 A plug.

Better ways to schedule it#

• The unit's own Wi-Fi. LG's UD501KOJ5 and Frigidaire's FHDD5033W1 both list Wi-Fi on their spec sheets. That gives you the humidity setting, not just power, at the cost of the maker's cloud and app.
• Matter, not yet. Dehumidifiers have no Matter device type, so through Matter a dehumidifier is still a plug: on and off, nothing else.
• The built-in timer. GE's APHR50 has Delay On and Delay Off. For a fixed daily window, that may be all you need.

Renters can use any of these without touching the wiring; a smart home for renters covers the rest of that list.

Where this page stops#

• Units read: GE APHR50, APEL50 family and AHK30 to AHK65 manuals plus two GE product pages, two LG spec sheets, three Frigidaire spec sheets, a Midea Canada product page and two DeLonghi FAQs, as of October 2026. Midea's amps and any DeLonghi model sheet were not read, so the page states neither.
• The GE manual linked in many guides covers the APHR50; the model is printed on its cover, and GE's product page for the APHR50LB gives 5.0 A.
• No maker read publishes inrush current for a dehumidifier or a plug, so the comparison is rated amps against motor ratings converted with NEC Table 430.248.
• Plugs read: Kasa EP10, Leviton D215P and Zooz ZEN15, plus TP-Link's general load FAQ. Other plugs may name dehumidifiers on their own load lists; check the model on your box, as the buying checklist says for every device.
• Cold rooms: GE says its models are "designed to be operated at temperatures above 41°F (5°C)". A schedule in an unheated garage in winter is outside that.
• US, 115 to 120 V, portable units. Whole-house dehumidifiers wired into the HVAC system are outside this page.