8 Best Oil Filled Heaters for Basements (October 2026) Top Reviews

Basements are the hardest room in most houses to heat. Cold concrete slabs, below-grade walls, air leaks around the rim joist and higher humidity all pull heat out faster than an upstairs room loses it, and a furnace that warms the main floor does almost nothing for the space below. An oil filled radiator heater solves part of that problem with something no other portable heater offers: heat that keeps coming after the power is switched off, spread silently through natural convection, without blasting dusty basement air around the room.

Here is the sizing rule that decides everything else: 10 watts per square foot for an insulated finished basement, and 15 watts per square foot for an uninsulated or poured-concrete space. A 1500W radiator realistically holds a 150 to 300 square foot zone as supplemental heat. Anything larger usually wants two heaters at opposite ends of the space rather than one big one.

We spent several weeks reading specification sheets, warranty terms and thousands of owner reviews across the eight models below, then sorted them by the things that actually decide whether a heater works in a basement: listed coverage, wattage, thermostat precision, safety certification, cord length and how much of the room one unit can realistically hold. The winners and losers were decided on that evidence, not on brand name. If you want a broader look at portable heating for the rest of the house, our oil filled radiator heater roundup covers the category without the basement angle.

One myth deserves clearing up before we start. Every electric resistance heater, whether it is oil filled, infrared or a fan-forced ceramic unit, converts electricity to heat at roughly 100 percent. Oil filled radiators do not produce more total heat per watt. What they do differently is store it, hold temperature between cycles, and move it quietly through the room. That difference matters enormously in a basement where the goal is steady warmth overnight rather than a five-minute blast of hot air.

Top 3 Picks for Basement Heating in 2026

The De’Longhi EW7707CM takes the top slot because it pairs the most reviewed ownership history in this group with the fewest complaints that matter in a basement: no fan noise, a sealed oil reservoir that never needs refilling, and a built-in anti-freeze setting that lets it sit at a low setpoint in an unheated space all winter. At 1500W across three settings with a 44 degree minimum setpoint, it covers the widest practical band of basement use cases in the list.

The PELONIS PH-14A is the one to buy when you want to control the heater from across the room. It pairs a remote, an LED display, a 10-hour timer and three wattage levels with the same 1500W output, and the shell is built from V0 flame retardant material. Its 164 square foot listed coverage is the most modest of the group, which is exactly why it works best in a defined zone rather than an open floor.

The De’Longhi TRD40615E Dragon goes third because of what its controls and cord length allow. A 24-hour programmable timer, a child lock and a 23 foot cord mean you can set a schedule once and place the heater where the room actually needs heat, which matters when the nearest outlet is across the basement. The trade-off is weight at 26.6 pounds and a larger footprint than anything else here.

All 8 Oil Filled Heaters for Basements Compared in 2026

Listed coverage figures above are manufacturer and retail claims, not measured results. Read our coverage correction in the buying guide before you size a heater to a square footage number.

How We Scored These Eight Heaters

We ranked these models on six criteria in this order: realistic coverage for a basement rather than a listing claim, wattage headroom, thermostat and scheduling control, the depth of the safety suite including certification, physical fit for a basement including weight and cord length, and the consistency of long-term owner reports.

Every specification quoted in this guide comes from the published product data, and every owner comment is drawn from the review record attached to that product. We did not run laboratory measurements on these radiators, so we do not quote temperature curves or decibel figures we cannot source. What we could do is read a large volume of owner reports on the same failure modes and see where they repeat.

The three problems that come up again and again in basement contexts are slow warm-up, short cords, and units that are honest about being meant for one small room rather than an open floor. Those three shaped the ranking more than any feature list. Warm-up is inherent to the design, because sealed thermal oil has to reach temperature before convection starts moving air.

1. De’Longhi EW7707CM Oil Filled Radiator – Best Overall

This is the radiator we keep coming back to for basements, and the reason is the review record rather than the spec sheet. At 12936 ratings it holds the most ownership history of anything in this roundup, which means the failure modes have been found, reported and either fixed or confirmed. That is worth more than a feature list when you are putting a heater in an unattended space for the winter.

The ComfortTemp system is the feature that matters most here. It reads the room and adjusts power and temperature on its own, so the heater settles into long cycles instead of slamming on and off. In a basement with poor circulation and cold concrete, that cycling discipline is the difference between a room that gradually climbs and a room that stays cold near the slab.

At 23.2 pounds and 27 inches tall, it is a full sized pedestal unit, and the owner reviews mention hauling it up basement stairs as the main physical complaint. The 6.5 by 15.5 inch footprint is narrow enough to sit against an interior foundation wall where it is out of the walkway, which is where we would put it.

The most common criticism across reviews is the wait. Owners consistently describe 2 to 3 hours before the set temperature is actually felt, which is the thermal mass doing exactly what it is designed to do. Once it is up to temperature, the same reviews describe heat that holds well through the night with no fan noise at all. Some buyers also report a light chemical smell on the first few uses, which clears out once the sealed oil finishes cycling.

Check the anti-freeze setting before you buy

This model has a 44 degree minimum setpoint and a dedicated anti-freeze mode, and that combination is the reason it suits a basement that is unoccupied for days at a time. Setting it near the bottom of the range keeps supply lines and drain traps above freezing without running the heater at full output, which matters when the goal is protection rather than comfort.

For a finished basement you actually sit in, run it normally and let it cycle. For a storage area or a crawl space under a living space, the low setpoint is the smarter setting and the lower the draw during the coldest hours.

Know when the 1500W ceiling will frustrate you

Both the medium and high settings draw the full 1500W, which owners note can trip a circuit in a basement that already has dehumidification or another appliance on the same outlet. There is also no built-in timer, so any scheduling has to come from an external plug timer or a smart plug.

If your basement is a single open space over roughly 300 square feet of uninsulated concrete, one of these will not carry it alone. For anything larger, the honest answer is two heaters placed at opposite ends, and the wattage maths in the buying guide will tell you quickly whether that is where you are.

2. PELONIS PH-14A Oil Filled Radiator – Best Value

The appeal of this model is control at a distance, and in a basement that control is worth real money. A remote with an LED readout means you can see the setpoint from the stairs, change it from a chair, and run the 10-hour timer overnight without walking across a cold concrete floor to reach a dial.

Three power levels at 600W, 900W and 1500W plus five temperature settings from 65 to 85 degrees give finer granularity than most of the manual models here. The 600W setting is genuinely useful in a mild basement spring, when you want heat without a full load on the circuit.

At 16.1 pounds it is lighter than either De’Longhi on this list, which makes the trip up basement stairs noticeably easier. The 15.16 by 6.38 by 26.06 inch footprint is slim enough to place against a wall without eating floor space, and the casters roll it between rooms when the basement gets divided into zones.

The 164 square foot listed coverage is the honest limitation and the reviews do not hide it. Owners using it in larger or drafty spaces report it struggling to hold temperature, and that is a coverage problem rather than a defect. Some buyers also mention an initial paint-curing smell and a beep on setting changes that is louder than expected in a quiet room.

Why the remote matters more in a basement than anywhere else

You are not going to walk down to a heater in a 40 degree basement every time you want to change a setting, and the first week you stop bothering because of it. A remote turns a heater you set once and ignore into one you actually operate, which is the difference between using ECO mode properly and running at full output all night.

Pair the remote with the 10-hour timer and the routine becomes simple: set it before bed, let it cycle down through the night, and check the LED readout in the morning. The thermostat range tops out at 85 degrees, which is more than enough for a basement living space.

Watch the warranty length and the handle

This carries a 1-year manufacturer warranty, noticeably shorter than the three years on both De’Longhi models. Over a multi-season basement installation that difference matters, particularly if you plan to run the same heater every winter for several years.

Handle tabs on some units crack after extended use according to owner reports, and one review describes internal burnt plastic and corrosion after under two years of light use. That is a single report rather than a pattern, but it is worth weighing alongside the shorter warranty when you decide whether to move this unit between rooms or leave it in one spot for the season.

3. De’Longhi TRD40615E Dragon Digital Radiator – Best Controls

The Dragon is the pick when the outlet is in the wrong place. A 23 foot cord is nearly four times the reach of a typical radiator cable, and in a basement with outlets along one wall it is the difference between heating the corner you actually use and heating the spot nearest the receptacle.

The 24-hour programmable timer is the other reason this one earns its slot. You set the schedule once and the heater runs the same pattern every day, which is exactly what a basement needs when you are heating a finished room on a budget and do not want it burning full output while the house is empty.

The 75 percent increase in radiant surface area over earlier RadiaS models is the engineering answer to the slow warm-up complaint, and owner reviews do describe more even warmth across the room as a result. It does not make the heater fast, but it does make the heat arrive across a wider area rather than pooling in one spot.

At 26.6 pounds and 16.4 by 10.3 inches, this is the largest and heaviest unit in the roundup, and moving it between stairs needs two people or real patience. That is the price of the bigger panel and the longer cord, and it is worth it if the heater lives in one spot rather than moving weekly.

Size it against a child lock and a schedule, not a dial

The child lock and the programmable timer are the two features that change day to day behaviour in a family basement. With a lock, a curious child cannot walk into a running heater and change the setting, and with a schedule you stop paying to heat an empty room on weekday mornings.

The digital panel also gives you a readout in an unlit basement where a mechanical dial is guesswork. Maximum setpoint is 82 degrees, which is short of the 85 degrees some models reach, but comfortably above what a basement living space needs.

Weigh the extras against the effort of moving it

This is the heaviest radiator here at 26.6 pounds, and owner reviews single out the large footprint and the weight as the reasons it is less convenient than smaller models. If your basement plan involves carrying a heater up and down stairs more than once a season, the lighter units further down this list will serve you better.

The premium asking price is the other tradeoff, and it is only defensible when you use the timer and the cord length regularly. For a single small storage room, a simpler dial model does the same job at a lower cost.

4. Amazon Basics 1500W Oil Radiator – BUDGET PICK

This is the honest budget answer for a small, defined basement space. It is ETL certified, it has real tip-over and overheat protection, and the three settings at 1500W, 1000W and 600W let you dial power to the space instead of running full output into a closed room.

What it does not have is anything electronic. There is no display, no timer and no remote, and that turns out to matter more than expected in a basement because mechanical controls keep working. Owner reviews note the dial restarts the heater automatically after a power interruption, which several digital models in this roundup do not do.

At 17.4 pounds and 11 by 14.8 by 25.2 inches it is one of the easier units to move up stairs, and the smooth-gliding casters help on a concrete floor. The slim vertical profile is genuinely useful along a foundation wall where a deeper unit would block a walkway.

The 144 square foot listed coverage is the hard limit, and reviews are clear that this is a single-room heater. Several owners describe it as the right call for a closed laundry or storage space and the wrong call for anything open. The hot-to-the-touch body and fins are also mentioned often enough that it should not sit within reach of small children.

Read the 144 sq ft figure as a room, not a zone

At 144 square feet this is roughly a 12 by 12 room, and the reviews describe exactly that use. If your basement space is a defined room with a door you can close, that is the right heater. If it is a long open floor, you will spend all winter watching it fail to keep up.

At 1500W full output it draws 12.5 amps, which is close to a 15 amp circuit limit, so keep it on a circuit by itself. Running it on a circuit that also carries a dehumidifier or a freezer is a common way to trip a breaker in spring.

Decide whether the missing timer is acceptable

No timer means no overnight scheduling and no way to cut output for daytime absence without physically walking over and turning a dial. For a room you use occasionally, that is a reasonable trade for the lower cost and the ETL certification.

If you plan to heat a finished basement family room every evening, add an external plug timer. Several owners do exactly that, and it is a two-minute addition that removes the only real functional gap in this model.

5. DREO DR-HSH010 Oil Filled Radiator – Best for Large Basements

Of the eight models here, this is the one whose listed coverage is built for a basement floor rather than a bedroom. At 250 square feet it is the highest claim in the group, and with a 41 to 95 degree setpoint range it also handles the freeze-protection end of the job that the De’Longhi EW7707CM covers with its anti-freeze mode.

What makes it a strong basement choice is the combination of control granularity and load management. Four modes including 600W and 900W let you drop the draw on a shared circuit, and the ECO thermostat uses a real sensor with smart cycling to hold temperature within about a degree according to owner reports.

The safety suite here is the deepest in the roundup: triple overheat protection, fire resistant material, ETL listing, tilt protection and a burn-proof plug. In a damp space where a heater runs unattended for long stretches, that layered approach is worth paying for over a single cutoff.

At 17.6 pounds and 12.83 by 9.92 by 26.14 inches it is one of the lighter large-capacity options, and the large wheels and handle make it straightforward to move between basement zones. The 92.3 percent efficiency figure in the product description refers to heat conversion and heating rate, not a saving on your electricity bill, which is a point we come back to below.

Set the thermostat, then ignore it for 40 minutes

The single most discussed complaint in reviews is that ECO and thermostat mode run at full power for roughly the first 40 minutes regardless of where you set the temperature. Owners who understood this in advance report being satisfied, and those who did not describe it as a fault.

Plan for it the same way you would plan any warm-up time. Set the thermostat, leave it alone for the first stretch, and judge the heater on the temperature an hour in rather than the first ten minutes.

Turn the display off if the space is quiet

Several owners report a faint high pitched whine that comes from the LCD and a mild odor with some popping on first use. The display has a screen-off function, and owners who use it report the whine disappears entirely.

That matters if the heater is going in a basement bedroom or a quiet media room. In a workshop or storage area the display is harmless, and the child lock and mute functions are worth having either way.

6. COSTWAY 1500W Oil Filled Radiator – Best for Tight Storage Rooms

This is a simple heater doing a simple job, and for a storage room or a corner under the stairs it does that job at the lower end of the price range. Seven oil filled thermal slots spread the heat and are designed to keep the surface temperature down, which is the same design approach the more expensive models use.

Three power levels at 600W, 900W and 1500W plus an adjustable thermostat is enough control for a space you are not spending long hours in. The permanently sealed oil reservoir means there is no fluid to check, top up or eventually leak out, which is the durability argument that matters most in a damp basement.

At 18 pounds and 13.5 by 13 by 25 inches it is a standard pedestal footprint, and the four heavy-duty casters and front carry handle make it easy to move along a concrete floor or between two basement rooms. The cord wrap is a small detail that pays off every spring when you store the heater away.

The limitation is obvious and owners state it plainly: a manual dial with no display, no remote and no timer. Everything the digital models in this roundup do, this one does not, and the reviews confirm that the radiant heat still takes time before the room feels warm.

Choose this for a room you heat occasionally

If your basement use is a storage area, a laundry room or an under-stair nook that needs warmth only on the days you work in it, the simpler control set is not a real loss. A dial thermostat holds temperature once it is set, and you are not walking in and out often enough to need a schedule.

What you give up is the ability to reduce output remotely. If you want to check the temperature from the stairs or cut the heater down while you are upstairs, one of the digital models further up this list does that job properly.

Expect no warranty reassurance to lean on

No warranty period is listed for this model in the product data, which is the main thing separating it from the De’Longhi units that carry three years. For a heater that will sit in a damp room for a full winter, that gap is worth factoring into how long you expect it to last.

The tip-over and overheat shutoff are automatic, and the sealed oil design removes the most common long-term failure mode, internal leaks. Plan on a shorter service life than a warranted unit and replace it rather than repairing.

7. Comfort Zone CZ7007J Oil Filled Radiator – Best for Bedrooms

Forum discussion of oil filled heaters comes back to one point consistently: people keep them because they are silent and they do not dry the air. This model is the smallest wattage in the group at 1200W, which makes it the most practical choice for a smaller basement bedroom, a guest suite or a media room where noise is the deciding factor.

Three settings at 500W, 700W and 1200W are unusual granularity for a mechanical dial and they let you run a low output overnight without the full load. The long cord also gives you placement freedom that most models in this price range do not offer.

At 15.8 pounds this is the lightest radiator in the roundup, and at 16.54 by 5.31 by 22.24 inches it is also the narrowest. That footprint is the reason it earns its badge, since a slim profile lets you put it against a wall or beside a doorway in a basement where floor space is already tight.

The honest problem is wattage. Owner reviews include several reports of it failing to warm a 12 by 15 bedroom even after several hours, and a few buyers who switched to a 1500W model instead. Its listing claims 300 square feet of coverage, which is the highest number in this roundup and almost certainly optimistic for a 1200W unit.

Treat the 300 sq ft listing figure skeptically

The 300 square foot claim on this model sits far above what 1200W can hold in an uninsulated space, and the owner reviews reflect that gap. A fair reading is a well-insulated, closed room of moderate size, not a basement floor. Judge it against the same 15 watts per square foot rule you would use for anything else.

It also carries a 1-year warranty against manufacturer defects, which is short. In a damp space, plan to treat it as a seasonal tool rather than a permanent installation.

Check your floor surface before you buy the casters

Owner reports describe the light-duty casters rolling poorly on hardwood and carpeted floors. On a bare concrete slab they glide fine, which is the common basement case, but if your basement is finished with carpet or hardwood you will be lifting rather than rolling it.

Silence is the real reason to choose this one. With no fan and a lower wattage draw, it is the least intrusive heater here for a sleeping area where a fan-forced unit would be unacceptable.

8. TANGKULA 1500W Oil Heater – Best No Break-In Odor

The most common first-week complaint about oil filled radiators is the smell of new oil and paint, and this is the model that most often does not have it. Owners repeatedly report no break-in odor at all, which in a small enclosed basement makes a real difference, because a fan-forced heater in the same space would circulate that smell for days.

Underneath, it is a conventional and solid design. Seven oil filled thermal slots hold 4.2 pounds of oil, which is more thermal mass than most of the group, and three settings at 600W, 900W and 1500W plus an adjustable thermostat give you ordinary control.

At 20 pounds and 14 by 10 by 23 inches it is a compact pedestal, and the detachable base and cord wrap make it the easiest model here to pack away at the end of the season. Automatic overheat and tip-over shutoff and low surface temperature on the thermal slots cover the safety basics.

Its 40 to 59 degree thermostat range is the narrowest here and worth understanding before you buy. That is a freeze-protection and low-setpoint range rather than a comfort range, so this works best as a low-output unit you run at moderate settings rather than one you set high.

Check the thermostat range before you rely on it

A 40 to 59 degree range is the first thing to check on this model. It handles pipe protection and low-output warming well, but if you want a finished basement living space at a normal indoor temperature you will be running it at the top of the dial constantly.

Several of the digital models here cover 65 to 95 degrees or 41 to 95 degrees, which is a much better fit for a room you actually sit in. Buy this one for a storage area, a workshop bench corner or a low-temperature guard, not for a finished suite.

Accept the slow start, but plan around it

Owners describe an hour or more before the room feels any difference, and the reviews are clear that it is not designed to heat large open spaces quickly. Start it before you go down rather than when you arrive, and the thermal mass will do its job quietly after that.

The 615 rating count is the smallest in this roundup, so owner reports here are thinner than elsewhere. That is a reason to weigh the no-odor claim against the larger samples behind the De’Longhi and PELONIS models, not a reason to skip it for a small enclosed space.

Basement Electrical and Placement Safety

Most heater fires happen because of placement, not because of a manufacturing defect, and a damp basement adds variables that an upstairs living room does not have. A few rules cover almost every risk.

Plug it directly into a wall outlet. Never run an oil filled heater on an extension cord or a power strip. A 1500W heater draws 12.5 amps, which is close to the limit of a 15 amp branch circuit, and the added resistance in a long or thin extension cord generates heat at exactly the point where nobody is watching.

Use a GFCI outlet. In a basement where water and electricity share space, a GFCI outlet is the single most useful safety feature in the room. If your basement outlets are not GFCI protected, have an electrician fit one before the cold season rather than after.

Keep three feet of clearance on every side. Nothing within three feet, including shelving, cardboard, paint cans, laundry baskets and stored furniture. On a concrete floor with stored items stacked high, this is the rule people break most often without noticing.

Elevate the heater in a flood-prone space. If your basement has ever taken water, set the heater on a platform or cinder blocks rather than directly on the slab. Standing water and a 1500W appliance are not a combination to plan for.

Pair heat with humidity control. Radiators do not dry the air, which is a genuine benefit in a basement, but they also do not remove moisture. Holding relative humidity near 50 percent with a dehumidifier is what actually prevents condensation on cold walls and the mold that follows it.

One more practical note on placement. Put the heater on an interior wall rather than an exterior foundation wall, where it will fight the coldest surface in the room, and keep it clear of the stair opening so heat rises into the space you actually use. If you are pairing it with a freezer or a dehumidifier, remember our deep freezer picks for basements and keep those appliances on their own circuits.

How to Choose an Oil Filled Heater for a Basement

Step 1: Measure the space and grade the insulation. Multiply the floor area by 10 if the basement walls are framed and insulated, and by 15 if they are poured concrete or uninsulated block. A 400 square foot finished basement at 10 watts per square foot needs 4000 watts, which no portable heater delivers, so the honest answer is two radiators at opposite ends or a permanently installed system.

Step 2: Apply the wattage rule per zone. One 1500W heater is a 1500 watt budget. At 10 watts per square foot that supports 150 square feet, and at 15 watts per square foot it supports 100 square feet of uninsulated space. Everything above that is supplemental heat against a central system, not a replacement for one.

Step 3: Deflate the coverage claims. Listed figures in this category range from 144 square feet on the Amazon Basics to 300 square feet on the Comfort Zone, and both are listing claims rather than measured results. The 1200W Comfort Zone claiming 300 square feet does not heat three times the area of a 1500W unit, because wattage is the constraint. Use the wattage rule above and treat every coverage number as a starting point.

Step 4: Pick a control type based on how you will use it. A mechanical dial is enough for a storage room or an occasional space, and it has one advantage: several mechanical models restart automatically after a power interruption, which some digital units do not. A digital panel with a remote and a 24-hour timer is worth the difference for any room you use regularly or want to heat overnight.

Step 5: Check certification and the safety suite. Treat ETL listing or UL listing as a minimum bar, and look for a tip-over switch, automatic overheat cutoff and a flame retardant housing. Models in this roundup with explicit certification include the Amazon Basics and the DREO. If you are running a heater unattended, the deepest safety suite available is the sensible choice.

Step 6: Plan the electricity load before you buy. A 1500W heater uses 1.5 kilowatt-hours of electricity for every hour it runs at full output. A 1200W unit uses 1.2 kWh per hour, and the 600W and 900W low settings on most of these radiators use 0.6 and 0.9 kWh per hour respectively. Multiply by your local rate per kilowatt-hour and by your realistic hours of daily use to get a monthly figure. Running a 1500W radiator for 10 hours a day works out to 15 kWh a day, or about 450 kWh over a 30 day month, before any thermostat cycling reduces it.

Step 7: Decide between one heater and two. For anything over roughly 300 square feet of open basement, two smaller heaters at opposite ends beat one oversized unit. Convection currents from two warm masses cover a room more evenly than one, and you gain the ability to shut one off when the space is empty. A related decision is whether you heat a defined zone or attempt the whole floor, and for a finished basement a closed room with a door is dramatically cheaper than an open concrete space.

Finally, the terminology that trips people up. An oil filled electric radiator is a portable appliance with sealed thermal oil heated by an electric element. A hydronic oil filled baseboard heater is a permanently installed unit connected to a boiler carrying heating oil or glycol. They share a name and nothing else, and every model in this roundup is the portable electric type.

When an Oil Filled Heater Is the Wrong Choice

There are basement situations where a radiator is the wrong tool, and owning that costs you nothing.

If you need heat in under an hour. Radiators are slow by design because the sealed oil has to reach temperature first. Forum discussion treats this as the single most common reason buyers reject them, and it is a fair reason. A fan-forced or infrared heater puts warm air into a room in minutes.

If the space is very large and open. One portable radiator cannot heat a large open basement floor efficiently, no matter how good the unit is. A mini-split or a permanently installed baseboard system is the right answer above roughly 1000 square feet, and running a portable heater there is an expensive way to stay uncomfortable.

If you are trying to solve moisture. Radiators add no humidity and remove none. Condensation and mold need a dehumidifier and air sealing, not more heat.

If the basement is only warm occasionally. For a two-hour visit rather than an evening of use, a fan heater’s speed is worth more than a radiator’s heat retention.

That said, the broader basement heater market is worth understanding before you commit. If you are furnishing a space as well as heating it, our basement arcade cabinet guide covers a corner of the same square footage question from a very different angle.

Frequently Asked Questions

The Bottom Line on Basement Heating

Match the wattage to the space before you match the features. A 1500W radiator heats a defined 150 to 300 square foot zone in an insulated basement, an uninsulated concrete floor beyond that wants two radiators at opposite ends, and anything past roughly 1000 square feet belongs to a permanently installed system. The De’Longhi EW7707CM is the best all-round choice for a typical basement, the PELONIS PH-14A wins when remote control matters, the De’Longhi TRD40615E solves awkward outlet placement with its 23 foot cord, and the DREO DR-HSH010 carries the deepest safety suite in this roundup. Updated for 2026, and whichever you choose, plug it straight into a GFCI outlet and give it three feet of space on every side.