Roundup · Smart
App control does not make a heater cheaper to run. A schedule does — and that is a narrower feature than the listings imply.
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A Wi-Fi space heater costs exactly the same to run as an ordinary one — 27.5 cents an hour at 1,500 W. The only smart feature that lowers a bill is scheduling, because hours are the only variable. Voice control is convenience, not savings, and many listings offer only voice.
Start from the wall this site keeps arriving at: every electric resistance heater converts essentially 100% of the electricity it draws into heat. A 1,500 W heater with Wi-Fi, an app, a color screen and voice control produces the same 5,118 BTU/h as a 1,500 W heater with a knob, and costs the same 27.5 cents an hour to do it. There is no smart discount and there is no efficient app.
So the entire economic case for a smart heater rests on hours. If an app shuts the heater off when you leave the house and starts it half an hour before you get back, it has removed running hours you were previously paying for. That is a real saving and it can be a large one — but notice how specific it is. It requires scheduling or geofencing. Being able to say “Alexa, turn on the heater” does not remove a single hour; if anything it adds them, because the heater is now easier to switch on from the sofa.
| Wattage | Per hour | 1 h | 4 h | 8 h |
|---|---|---|---|---|
| 1,500 W | 27.5¢ | $0.28 | $1.10 | $2.20 |
Computed at 18.34¢/kWh — the U.S. residential average for June 2026 (EIA, Electric Power Monthly, Table 5.6.A, released August 26, 2026). Your rate is on your own bill; substitute it and the arithmetic still holds. Figures assume full output for the whole period.
Eight hours a day for a month at full output is about $66 at the rate below. Schedule away three of those eight hours and you have saved roughly $25 a month — which is most of the price difference between a smart heater and a plain one, recovered in a single winter. That is the honest version of the pitch, and it is a good one. It just is not the pitch on the box.
The rate behind every figure on this site
18.34¢per kilowatt-hour
U.S. residential average for June 2026. EIA, Electric Power Monthly, Table 5.6.A, released August 26, 2026.
This is the most recent month EIA has published. Residential rates move seasonally and vary enormously by state — from roughly a dime per kilowatt-hour in parts of the South to more than 40¢ in Hawaii — so treat it as a national reference point, not as your rate.
| Tier | What it does | Does it lower the bill? |
|---|---|---|
| Voice only — “Works with Alexa” | Switch on, switch off, sometimes set a temperature, by speaking | No. It changes how you issue commands, not how many hours run |
| App control | The same commands from a phone, from anywhere | Marginally. You can switch it off when you realise you left it on |
| App scheduling | Heating hours set in advance and repeated daily without you | Yes. This is the feature to buy, and the one to check for by name |
All three are advertised with the same word. Only the third one reduces what you spend.
The distinction matters when you are reading listings, because “Works with Alexa” is printed far more often than “schedules” and is much cheaper to implement. Of the three picks below, all three offer app control, and the Dreo WH719S is the one whose manufacturer explicitly publishes heating schedules on its own product page.
All three picks below fix to a wall, and that fell out of the criteria rather than being one of them. The reason appears to be commercial: a connected heater is a semi-permanent fixture for a specific room, so the makers building real hardware in this category have concentrated on wall units, while the portable end has been left to anonymous sellers bolting a Wi-Fi module onto a generic tower.
There is a practical upside. Mounting a heater on a wall removes tipping, floor clearance and cord routing at a stroke — the three most common ways a portable heater becomes a hazard. The trade is that it is a drill and a decision, and in most rentals it is not permitted at all. If the mounting is what appeals rather than the Wi-Fi, best wall-mounted heaters is the page for that, and it includes non-connected options.
At 10 watts per square foot with average insulation and an 8-foot ceiling, 1,500 W covers 150 sq ft whether or not it is on your Wi-Fi. None of the three picks publishes a coverage claim of its own, so every coverage figure attached to them here is ours and is computed.
| Room size | Watts needed | BTU/h | Plug-in heaters |
|---|---|---|---|
| 100 sq ft | 1,000 W | 3,412 | 1 |
| 150 sq ft | 1,500 W | 5,118 | 1 |
| 200 sq ft | 2,000 W | 6,824 | 2 (different circuits) |
| 300 sq ft | 3,000 W | 10,236 | 2 (different circuits) |
Computed as square feet x 10 W x insulation factor x (ceiling / 8 ft), for an average heated room — 10 W/sq ft, 8 ft ceiling. Heater count assumes the 1,500 W plug-in ceiling.
One genuine caution specific to this category: aggregator sites list some of these models against coverage figures in the 700 sq ft range. Those numbers do not come from the manufacturers — we looked — and a 1,500 W heater cannot deliver them, because the wattage is the ceiling and the wattage is fixed. Treat any coverage claim without a maker's page behind it as marketing.
| Heater | Draw at 120 V | 15 A circuit (12 A limit) | 20 A circuit (16 A limit) |
|---|---|---|---|
| 900 W | 7.5 A | Fits | Fits |
| 1,200 W | 10.0 A | Fits | Fits |
| 1,500 W | 12.5 A | Over the limit | Fits |
| Maximum continuous | — | 12 A = 1,440 W | 16 A = 1,920 W |
Draw computed as watts / 120 V. The continuous limit is 80% of the breaker rating, which follows from the NEC's requirement to size a circuit at 125% of a continuous load (NFPA 70, 210.19(A)(1) and 210.20(A)).
At 1,500 W a smart heater draws 12.5 A, over the 12 A continuous allowance of a 15 A circuit, exactly like every other heater on this site. An app that switches it on remotely does not consult your breaker panel first. If the heater is going to run unattended on a schedule, it is more important than usual that it is on a circuit that can carry it — see a 1,500 watt heater on a 15 amp circuit.
Three units, ranked by how much of the smart proposition their makers will actually put in writing. All three are wall-mounted; all three publish a model number and have a manufacturer page you can read.
Ranked for fit, not for hype. Coverage and current draw are computed from each unit’s published wattage. Tap a row for the full write-up, or go straight to the listing.
| # | Product | Best for | Covers | Draw | Price |
|---|---|---|---|---|---|
| 1 |  Dreo WH719SThe one heater here whose maker publishes genuine app scheduling rather than voice control alone — which matters, because a schedule is the only smart feature that lowers a bill. | Scheduling from the app, not just shouting at it | 150 sq ft | 12.5 A | $116.97 · Check on Amazon−10% |
| 2 |  Heat Storm HS-1500-PHXWall-mounted, which removes the entire tip-over failure mode rather than mitigating it — and Wi-Fi scheduling means it can heat a bathroom before you get in it. | Getting the heater off the floor | 150 sq ft | 12.5 A | $149.99 · Check on Amazon |
| 3 |  Dreo WH517SThe cheapest genuinely verifiable smart heater here, and the only one in the category that publishes a noise figure — 28 dB on its lowest setting. | A published decibel figure on a smart heater | 150 sq ft | 12.5 A | $84.53 · Check on Amazon−15% |
Coverage computed at 10 W/sq ft, average insulation, 8 ft ceiling. Draw computed as watts ÷ volts. Neither figure is a manufacturer claim.
Top pick · Scheduling from the app, not just shouting at it
The one heater here whose maker publishes genuine app scheduling rather than voice control alone — which matters, because a schedule is the only smart feature that lowers a bill.
| Published specification | |
|---|---|
| Rated power | 1,500 W at 120 V (retail listing; Dreo publishes “1500W Max”, not per-setting wattages) |
| Thermostat | 41–95°F, 1°F increments (Dreo's published figure) |
| Smart control | Wi-Fi, Dreo app with heating schedules, Alexa and Google Home |
| Oscillation | 120° vertical |
| Timer | 24 hours |
| Mounting | Wall-mounted — not a portable unit |
| Heat type | Ceramic (PTC) |
| Maker’s coverage claim | None published — the coverage figure above is ours |
| Safety listing | Dreo's product page for this model does not publish a UL or ETL mark — unlike its Solaris 718 page, which does. Check the rating plate. |
Who it is for
A bedroom or home office where you want heat on a schedule — warm before you wake, off after you leave — without being in the room to arrange it.
What it is not for
A renter who cannot drill, or anyone who wants to move the heater around. For that, the portable picks on the other roundups are the right shape.
2 · Getting the heater off the floor
Wall-mounted, which removes the entire tip-over failure mode rather than mitigating it — and Wi-Fi scheduling means it can heat a bathroom before you get in it.
| Published specification | |
|---|---|
| Rated power | 1,500 W at 120 V |
| Published output | 5,200 BTU/h |
| Mounting | Wall-mounted |
| Control | Wi-Fi app, remote scheduling |
| Element | Infrared quartz |
| Heat type | Infrared quartz |
| Maker’s coverage claim | None published — the coverage figure above is ours |
| Safety listing | No listing mark published in the listing text; check the rating plate for the UL or ETL mark. |
Who it is for
A bathroom, a small bedroom, a workshop corner — anywhere floor space is gone and a heater on the ground is a hazard.
What it is not for
Renters who cannot drill, and rooms where you want the heater to move with you.
Sources for this entry
3 · A published decibel figure on a smart heater
The cheapest genuinely verifiable smart heater here, and the only one in the category that publishes a noise figure — 28 dB on its lowest setting.
| Published specification | |
|---|---|
| Rated power | 1,500 W at 120 V (Dreo publishes “1500W Max” and 3 heat settings, not their wattages) |
| Thermostat | 41–95°F, 1°F increments (Dreo's published figure) |
| Smart control | Wi-Fi, Dreo app, Alexa and Google Home |
| Noise | 28 dB, published in the listing (lowest setting) |
| Ingress rating | IP24, published in the listing |
| Other modes | ECO mode, fan-only |
| Mounting | Wall-mounted — not a portable unit |
| Heat type | Ceramic (PTC) |
| Maker’s coverage claim | None published — the coverage figure above is ours |
| Safety listing | Dreo's product page does not publish a UL or ETL mark for this model. The listing does publish an IP24 ingress rating, which is a different thing and is not a safety listing. |
Who it is for
A bedroom, small office or bathroom wall where quiet matters and you want app control and a schedule at the lowest price that is still verifiable.
What it is not for
Anywhere you need to move the heater, and not a room where you need a published safety listing before you buy — check the rating plate first.
And what we did not do: we have not tested these units, owned them, measured them or run them in a room. Everything above is compiled from published manufacturer specifications and live retail listings, with the electrical load, room coverage and running cost computed by us from the published wattage. The full method.
Every roundup on this site names something to skip. It costs us nothing to publish and it is the fastest way to tell whether a buying guide was written for you or for its commission.
The great majority of “smart Wi-Fi space heater” listings
Searching this category returns page after page of 1,500 W heaters with app control from brands that publish no model number, no manufacturer product page and no specification you can check — names that appear for a season and vanish. We are not going to pretend that is a judgment about build quality, because we cannot make one. That is exactly the problem: a smart heater joins your home network and runs as a 12.5 A continuous load, and the two together are the wrong combination to buy from a seller who will not say who they are. Every pick on this page has a model number, a manufacturer page and a specification that can be read.
A smart plug used to make an ordinary heater “smart”
It looks like the cheap version of this page and it is not. A 1,500 W heater is a 12.5 A continuous load, at or beyond what many smart plugs are rated to switch repeatedly, and cutting power at the plug discards the heater's own control state — many units restart in standby rather than resuming, so your 6 a.m. schedule turns the socket on and nothing else happens. If you want scheduling, buy a heater that schedules itself. The same reasoning applies to extension cords and for the same electrical reason.
Neither Dreo product page publishes the wattage of its individual heat settings, so on two of the three picks only the 1,500 W maximum can be costed. Reseller listings circulate figures of 900 W and 1,300 W for the intermediate steps; those are not Dreo's numbers and we have not recorded them, because a reader would use them to compute a bill.
Neither Dreo page publishes a UL or ETL mark for these two models either, which is worth flagging precisely because Dreo does publish ETL for its Solaris 718. We do not know why the wall units differ and we are not going to guess; check the rating plate on the unit. The WH517S listing publishes an IP24 ingress rating, which is a water-resistance classification and is not a safety listing — the two are routinely confused. UL vs ETL explains what a listing mark actually certifies.
And, as everywhere on this site: we have not tested any of these. No lab, no measurement, no owned units. What is above is published specification, the arithmetic we ran on it, and an explicit note wherever a maker left a field blank.
Only if they schedule. A Wi-Fi heater costs exactly the same per hour as a mechanical one at the same wattage — about 27.5 cents at 1,500 W — because every electric resistance heater is essentially 100% efficient. Savings come from running fewer hours, so scheduling saves money and voice control does not.
Voice compatibility lets you issue commands by speaking. Wi-Fi with an app lets you control it from anywhere, and app scheduling lets you set heating hours in advance. Only the last one reduces running hours. Many listings advertise 'Works with Alexa' without offering scheduling at all, so check for the word specifically.
It is not a good substitute. A 1,500 W heater is a 12.5 A continuous load, at or beyond what many smart plugs are designed to switch repeatedly, and cutting power at the plug discards the heater's control state — many units restart in standby rather than resuming, so the schedule energizes the socket and nothing happens.
The electrical safety is the same as any heater, but a scheduled heater switches on in an empty room, so the three-foot clearance rule matters more, not less. Confirm nothing has been moved near the heater before setting a repeating schedule, and keep it on a circuit that can carry 12.5 A.
The portable end of this category is dominated by sellers who fit a Wi-Fi module to a generic 1,500 W heater and list it under a brand name that may not exist next season. That is why every pick here is from a maker with a published product page — a device that joins your network and draws 12.5 A continuously is the wrong thing to buy anonymously.
Mounting deletes tipping, floor clearance, cord routing and child reach. Plug-in panels and one hardwired unit.
The only feature that actually cuts the bill, because it is the only one that turns the heater off.
Wall-mounted infrared with Wi-Fi scheduling and a BTU figure that matches its wattage exactly.
All electric heaters are 100% efficient. These are picked on the three things that actually cut the bill.
12.5 A against a 12 A continuous limit — the arithmetic nobody publishes, and what to do about it.
Silent, timed and safe overnight — the units that solve the bedroom's three actual problems.
WH719S sweeps, WH517S publishes 28 dB and IP24. Both schedule from the app; neither names a listing mark.