Review · Micathermic panel
A fanless mica panel that publishes three wattages and a set-point range, from a brand that publishes nothing anywhere else. Both halves of that sentence matter.
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The Pasapair HP2501-15AW is a fanless mica panel heater that publishes all three of its wattages — 600 W, 900 W and 1,500 W — a 41–97°F thermostat, an anti-frost mode preset at 41°F, and a 12-month warranty, and ships with both a wall-mount kit and castors. It is this site's mica pick because the De'Longhi HMP1500 was discontinued. The catch is documentation: every figure here has exactly one source, because the brand publishes nothing outside its listing.
Top pick · A slim fanless panel, on the wall or on castors
The rare mica panel that publishes all three of its wattages and a thermostat you can set to the degree — which is what makes the cheap settings costable instead of guessable.
| Published specification | |
|---|---|
| Rated power | 600 W / 900 W / 1,500 W at 120 V — all three published on the listing |
| Element | Mica panels behind a perforated metal front panel; no fan |
| Thermostat | 41–97°F set-point |
| Modes | Comfort, ECO, Anti-Frost (preset at 41°F) and Open Window Detection |
| Controls | Touch panel, remote (2 AAA, not included), Smart Life app and Alexa; 2.4 GHz Wi-Fi only |
| Timer | 24/7 weekly scheduling through the app |
| Mounting | Wall-mount kit and 360° swivel castors both in the box; rear carry handle |
| Safety | Overheat protection and a tip-over switch |
| Maker's coverage claim | “rooms up to 250 sq. ft.” — our figure is 150 sq ft at 10 W per square foot |
| Warranty | 12 months |
| Heat type | Micathermic |
| Maker’s coverage claim | 250 sq ft |
| Safety listing | No UL or ETL mark is published in the listing. The title's IP24 claim is a water-ingress rating, not a safety listing — check the rating plate. |
Who it is for
A small bedroom, study or hallway where floor space is tight and fan noise is the thing you are trying to avoid, and where being able to run 600 W rather than 1,500 W all evening matters.
What it is not for
A nursery or a home with toddlers at floor level — a mica panel is hot to the touch by design, and there is no child lock. Also not a large or drafty room: 1,500 W is 1,500 W whatever the listing claims.
| Published | Computed by us | |
|---|---|---|
| Rated power | 600 W / 900 W / 1,500 W at 120 V | — |
| Current draw | Not published | 5.0 A / 7.5 A / 12.5 A |
| Output | Not published | 2,047 / 3,071 / 5,118 BTU/h |
| Coverage | “rooms up to 250 sq. ft.” | 150 sq ft at 1,500 W — the claim works out at 6 W per square foot |
| Cost per hour | Not published | 11.0¢ / 16.5¢ / 27.5¢ |
| A month at 8 h/day | — | $26.41 / $39.61 / $66.02 |
| Thermostat | 41–97°F | — |
| Modes | Comfort, ECO, Anti-Frost (41°F), Open Window Detection | — |
| Element | Mica panels behind a perforated metal front | — |
| Mounting | Wall-mount kit and 360° swivel castors, both included | — |
| Safety | Overheat protection and a tip-over switch | — |
| Certification | None published (the IP24 figure is water ingress) | — |
| Warranty | 12 months | — |
Published figures from the Amazon listing title, feature bullets and model field, read 2026-10-23. Our column is watts ÷ volts for current, watts × 3.412142 for output, watts ÷ 10 for coverage at our baseline sizing rule, and 18.34¢/kWh for cost.
Most heaters in this category publish one number and then offer you “three heat settings” with no wattages attached, which leaves you one costable figure out of three. This listing publishes 600 W, 900 W and 1,500 W by name, and that turns the two cheap settings into arithmetic:
| Wattage | Per hour | 4 h | 8 h |
|---|---|---|---|
| 600 W | 11.0¢ | $0.44 | $0.88 |
| 900 W | 16.5¢ | $0.66 | $1.32 |
| 1,500 W | 27.5¢ | $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.
In a small, reasonably insulated room the 600 W setting is not a compromise — it is the correct setting once the room is up to temperature. It also draws 5 A instead of 12.5 A, which is the difference between a heater that shares a circuit with a desk and one that does not. The circuit arithmetic in full.
| Heater | Draw at 120 V | 15 A circuit (12 A limit) | 20 A circuit (16 A limit) |
|---|---|---|---|
| 600 W | 5.0 A | Fits | Fits |
| 900 W | 7.5 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)).
The listing says it suits “rooms up to 250 sq. ft.” At 1,500 W that works out at 6 watts per square foot. This site sizes at 10 W per square foot for a room with average insulation and an 8-foot ceiling, which puts the same heater at about 150 sq ft — and at 120 sq ft in a drafty room, or 100 in a space outside the heated envelope.
| 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 |
| 250 sq ft | 2,500 W | 8,530 | 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.
Neither figure is dishonest; they are different assumptions, and the listing does not state which one it used. Ours is published on the watts-per-square-foot page along with the corrections, so you can check it. Treat 250 sq ft as the manufacturer's best case and 150 as the planning number.
A 41–97°F set-point is a genuine advantage and a rare one: only a handful of the heaters we track publish a thermostat range in degrees at all, and a panel you can set to 66°F cycles off and stays off in a way a knob marked low-to-high does not.
The wall-mount kit and the 360° swivel castors are both in the box, and that matters more than it sounds: a mica panel on the wall is out of reach of children and animals, takes no floor space, and removes the tip-over failure mode entirely rather than mitigating it with a switch. On castors it is a portable heater with a rear handle. Buying the choice rather than one of the two is the right default. Every wall-mountable option that needs no electrician.
This is the honest cost of the swap, and it is worth being blunt about. The De'Longhi this replaces had a manufacturer page with its own specification table. This one has a marketplace listing and nothing else we could find — no brand site, no spec sheet, no manual online, no support page.
| Pasapair HP2501-15AW | De'Longhi HMP1500 (discontinued) | |
|---|---|---|
| Published wattages | 600 / 900 / 1,500 W | 1,500 / 750 W |
| Thermostat | 41–97°F set-point | Dial, no range published |
| Frost setting | Anti-Frost preset at 41°F | Frost mode above 41°F |
| Mounting | Wall kit and castors included | Wall bracket and castors included |
| Cutoffs published | Overheat and tip-over | Thermal shut-off and tip-over |
| Warranty | 12 months | None published on the listing |
| Certification | None published | None published |
| Manufacturer documentation | None found | Own product page with a spec table |
The De'Longhi column is an archive — it was discontinued in October 2026. Both are 1,500 W fanless mica panels, so neither produces more heat than the other, and both cost 27.5¢ an hour at full output.
On paper the replacement publishes more. In provenance it publishes less, and those two facts do not cancel out — they are different kinds of confidence. If the documentation gap is the thing you care about, the honest alternative is to leave the mica category and buy a fanless oil-filled radiator from a maker that publishes its own specifications; you lose the slim profile and the fast warm-up, and you keep the silence.
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.
600 W, 900 W or 1,500 W — all three are published, which is unusual in this category. At our published rate those cost about 11.0, 16.5 and 27.5 cents an hour respectively, and they draw 5.0, 7.5 and 12.5 amps at 120 V.
About 150 sq ft at 1,500 W with average insulation and an 8-foot ceiling, which is our figure. The listing claims rooms up to 250 sq ft, which works out at 6 watts per square foot against the 10 we size by — treat it as the manufacturer's best case.
Yes. There is no fan in a mica panel at all, so it is effectively silent and moves no dust, pollen or dander around the room. That is the main reason to choose the type over a ceramic heater.
Yes, and the wall-mount kit is included along with 360° swivel castors, so you can choose either without a second purchase. Mounting it frees the floor and puts the hot panel out of reach, which matters because the panel is hot to the touch by design.
Not that we can verify. No safety listing mark appears anywhere in the listing. The IP24 figure in the title is a water-ingress rating and is not a safety listing. Check the rating plate on the unit before you buy.
Because the HMP1500 was discontinued — its Amazon listing left the catalogue in October 2026 and De'Longhi's own page shows it out of stock. This is the closest live mica panel we could verify: same type, same fanless silence, same wall-or-floor choice, and it publishes three wattages where the De'Longhi published two.
Discontinued October 2026. The archived specifications, and the mica panel we recommend in its place.
Silent like a radiator, fast like a ceramic, three inches thick — the least-known type here.
Mounting deletes tipping, floor clearance, cord routing and child reach. Plug-in panels and one hardwired unit.
Silent by design, not by adjective — the fanless types, plus the one unit that publishes a dB figure.
Chosen for a lease, a shared breaker panel and a neighbor through the wall — not for a floor plan.
150 W warms a person; 600 W holds about 60 sq ft. The picks, the amps, and what each wattage honestly covers.