Head-to-head · Dreo
Two units, one app, and a surprisingly clean split: the quiet one and the sweeping one. Plus the three fields Dreo leaves blank on both.
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Both Dreo wall heaters run to 1,500 W, hold 41–95°F to the degree and schedule from the Dreo app with Alexa and Google support. The WH719S adds 120° vertical oscillation; the WH517S publishes a 28 dB noise figure and an IP24 rating. Neither publishes per-setting wattages or a UL/ETL mark.
Dreo sells both under listing titles that are almost interchangeable — *"DREO Smart Wall Heater, 1500W Space Heater for Bedroom"* and *"DREO Smart Electric Wall Heater for Indoor Use, Works with Alexa"* — and the model numbers sit in the listing's model field rather than the title. Resolve them and the difference is actually clean.
The WH719S is the one that moves the heat around: Dreo publishes 120° vertical oscillation for it. The WH517S is the one built for a wet or quiet room: its listing publishes an IP24 ingress rating and 28 dB at its lowest setting. Everything else the two share.
| WH719S | WH517S | |
|---|---|---|
| Rated power | 1,500 W max (retail listing) | 1,500 W max (Dreo) |
| Heat settings | Not published per-setting | 3, wattages not published |
| Thermostat | 41–95°F, 1°F increments | 41–95°F, 1°F increments |
| Wi-Fi + app | Yes, with heating schedules | Yes, app control |
| Voice | Alexa and Google Home | Alexa and Google Home |
| Oscillation | 120° vertical | Not published |
| Published noise | Not published | 28 dB (lowest setting) |
| Ingress rating | Not published | IP24 |
| Timer | 24 hours | 24 hours |
| ECO mode | Not published | Yes |
| Safety listing (UL/ETL) | Not published | Not published |
| Mounting | Wall | Wall |
Published by Dreo, or by the retail listing where noted. "Not published" means we looked and it was not there.
Per-setting wattages. Both publish a 1,500 W maximum and multiple heat settings; neither publishes what the lower settings draw. Reseller listings circulate H1 900 W / H2 1300 W / H3 1500 W, and we have not recorded those because they are not Dreo's numbers and a reader would use them to compute a bill.
A safety listing. Neither page names a UL or ETL mark — which is odd, because Dreo *does* publish ETL for its Solaris 718 tower. We do not know why the wall units differ and we are not going to guess. Check the rating plate, particularly if a lease requires a listed heater. What a listing mark actually certifies.
Coverage. Neither publishes a square-footage figure, so every coverage number on this page is ours, computed at 10 W per square foot from the 1,500 W maximum.
Dreo publishes heating schedules in the app for the WH719S — "schedule room heating hours to match your routine" — and app control on both. That distinction matters more than the rest of the feature list, because scheduling is the only connected feature that reduces what you spend.
Every electric resistance heater costs the same per hour at the same wattage. A Wi-Fi heater is not cheaper to run than a mechanical one. What an app can do is remove running hours — heat off when the house empties, on half an hour before it fills — and that is a real saving. Voice control is convenience: being able to say "turn on the heater" removes no hours and arguably adds some. The three tiers sold as "smart".
| Wattage | Per hour | 1 h | 8 h |
|---|---|---|---|
| 1,500 W | 27.5¢ | $0.28 | $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.
At full output both are 27.5 cents an hour, about $66 a month at eight hours a day. Schedule away three of those eight hours and you have saved roughly $25 a month, which is most of the price difference between these two in a single winter.
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.
| 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) |
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.
| Heater | Draw at 120 V | 15 A circuit (12 A limit) | 20 A circuit (16 A limit) |
|---|---|---|---|
| 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)).
150 square feet at 10 W per square foot, and 12.5 A at 1,500 W — over the 12 A continuous allowance of a 15 A circuit, exactly like every other plug-in heater. A wall heater that switches itself on to a schedule makes that worth checking before you mount it: it will be running in an empty room. The circuit arithmetic.
| If your priority is… | Buy |
|---|---|
| A bathroom or a damp room | WH517S — IP24 is published |
| A bedroom where noise decides it | WH517S — 28 dB is published; nothing is for the 719S |
| Getting heat down into the room | WH719S — 120° vertical oscillation |
| Scheduling explicitly published | WH719S — Dreo names heating schedules |
| An exact temperature | Either. Both publish 41–95°F in 1°F steps |
| A published safety listing | Neither. Check the rating plate |
| Lower running cost | Neither. They are identical at identical settings |
The decision, reduced.
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 |  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 · 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.
The WH719S publishes 120° vertical oscillation; the WH517S publishes a 28 dB noise figure and an IP24 ingress rating, which makes it the one to consider for a bathroom. Both run to 1,500 W, hold 41–95°F in 1°F increments, and schedule from the Dreo app with Alexa and Google support.
Both publish a 1,500 W maximum with multiple heat settings, but Dreo does not publish the wattage of the individual settings. Reseller listings circulate figures for them; those are not Dreo's numbers, so we do not use them to compute costs.
Dreo does not name a UL or ETL mark for either wall heater, which is notable because it does publish ETL for its Solaris 718 tower. The WH517S publishes an IP24 ingress rating, which is water resistance and not a safety listing. Check the rating plate on the unit.
The WH517S publishes an IP24 rating, which is the relevant specification for splashing water, and the WH719S does not. Bathroom installation also has its own placement and GFCI rules regardless of the heater — see our bathroom roundup before committing to a location.
Only through scheduling. A Wi-Fi heater costs exactly the same per hour as a mechanical one at the same wattage. What the app can do is remove running hours by starting and stopping the heater without you, and that is where any saving comes from.
Wi-Fi does not cut the bill; a schedule does. Three picks that publish a model number — and most of this category does not.
Mounting deletes tipping, floor clearance, cord routing and child reach. Plug-in panels and one hardwired unit.
1,500 W, a published 300 sq ft claim that survives the arithmetic, and a thermostat with numbers.
Both marks mean the same standard was met. Here is how to check that a listing is real.
The only feature that actually cuts the bill, because it is the only one that turns the heater off.
Fast heat, no floor space, and the one room where where you plug in genuinely matters.