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DeLonghi ComfortTemp Radiant Heater Review & Performance

On this page 10 sections
  1. The Specs
  2. DeLonghi ComfortTemp Radiant Heater Review
  3. What the Dragon Does Well In A Quiet Room
  4. Measure The Room Before You Buy
  5. Check Running Cost Before You Leave It On
  6. Safety Features And Bathroom Limits
  7. How It Compares With Oil-Filled Radiators
  8. Who Should Buy The Dragon Instead
  9. DeLonghi ComfortTemp Alternatives
  10. Questions People Ask
Our verdict
Buy the DeLonghi ComfortTemp for quiet, controlled radiant heat in a medium bedroom or office. Skip it if your room is drafty and needs fast whole-room recovery, or if you prefer the stored warmth of an oil-filled radiator.
Buy it if
People who want quiet zone heating for a reasonably contained bedroom, office, or similar room.
Skip it if
Skip it for leaky spaces, rapid heat recovery, or a bathroom unless the manual specifically approves that use.

The appeal is simple: no fan noise, a programmable timer, and a radiant panel that warms people and nearby surfaces without blowing dust around. That makes sense if you want steady supplemental heat and hate the sound of a small turbine trying to impersonate winter.

The catch is equally simple. Radiant heaters feel great close in, but a cold, leaky room can outrun them if you expect furnace-level output from a plug-in appliance.

What to remember
Use it for quiet supplemental heat in bedrooms, offices, and other closed rooms up to the size the manual supports.
Expect gentle, steady warmth, not a blast of hot air.
At 1,500 W, it uses about 1.5 kWh per hour when it stays on, so runtime matters.
The 24-hour timer and ECO Plus mode help if you only need heat in short blocks.
Skip it if you need quick recovery in a drafty basement or garage.

The Specs

Power1500W
Timer24 hour timer
ControlsDigital control panel with LED display
Heat design75% more radiant surface area than RadiaS due to its unique
Dimensions16″x10″x26″

DeLonghi ComfortTemp Radiant Heater Review

The DeLonghi ComfortTemp radiant heater is a 1,500 W indoor space heater for quiet, targeted warmth in a bedroom, office, or similar enclosed room. Its digital control panel, 24-hour timer, and ECO Plus mode make it easier to run on a schedule, while radiant heat warms nearby people and surfaces without a fan stirring dust or dander.

12.5 A
Approximate draw at 1,500 W
On a 120 V circuit, 1,500 W ÷ 120 V is about 12.5 A. Always plug the heater into a dedicated wall outlet to avoid overloading cords and reduce risk of overheating.

That makes the ComfortTemp a better full-room radiant heater for a quiet, reasonably enclosed space than for an open or drafty area. Radiant warmth has direction: sit within its useful heating zone and you feel the benefit sooner, while cold air entering through a door or leaky window keeps demanding more heat. A fan heater may recover that kind of room faster, but it brings fan noise with it.

In short
Choose this DeLonghi radiant heater when silent, directional warmth matters more than rapid heat distribution. The timer and ECO Plus setting help control operation, but they don’t turn a 1,500 W heater into a whole-house system.
Myth
A heater labeled full room will heat every part of a large or drafty room evenly.
Fact
Full-room wording describes the intended heating job, not a guarantee that every corner will feel the same. Room size, insulation, drafts, furniture placement, and your distance from the heater all affect the result.

The strongest reason to buy the ComfortTemp is the quietness. There’s no blower motor pushing warm air around, so it suits reading, sleeping, video calls, and other jobs where a cycling fan becomes the loudest coworker in the room. The digital controls and 24-hour timer are useful conveniences; ECO Plus can reduce output or cycling when the room is near the selected comfort level.

Worked example
Say you use the heater in a closed home office for 6 hours. Its maximum electrical load is still 1,500 W, or 1.5 kW, while it is actively heating. The thermostat and ECO Plus mode may cycle the heating element, so actual energy use can be lower than running at full output for all 6 hours; the exact result depends on the room and set temperature.
Rated power1,500 W
Circuit loadAbout 12.5 A at 120 V
ControlsDigital panel, 24-hour timer, ECO Plus

For a broader look at similar quiet DeLonghi models, compare this design with DeLonghi radiant heater options before choosing the heater that matches your room and routine.

What the Dragon Does Well In A Quiet Room

The DeLonghi ComfortTemp earns its keep in a quiet bedroom or office because its large radiant surface warms steadily without a fan. DeLonghi oil-filled radiator reviews often favor that quiet, even heat; a DeLonghi panel heater review points to a similar benefit, though panel heaters usually feel more immediate and less gradual.

DeLonghi says the ComfortTemp has 75% more radiant surface area than a comparable standard radiator. More metal surface gives the heat more room to spread, so each section can release warmth more gently instead of concentrating it in one hot stream. The room still receives the heater’s rated output; the difference is how that heat reaches you.

No fan means no fan noise and less air movement carrying dust around the room. That suits a desk, reading chair or bedside position, where the steady warmth matters more than a blast of hot air. The trade-off is slower recovery after a door opens or a draft rolls through.

FeatureWhat it doesTrade-off
Radiant heatingSpreads warmth across the larger surfaceFeels gradual rather than blast-fast
No fanRuns quietly and moves less dustCan’t force warm air into distant corners
Integrated handleMakes room-to-room carrying simplerYou still need to move it carefully when hot
Control panelKeeps settings on the heaterControls aren’t as convenient from across the room
The ComfortTemp’s strengths are aimed at zone heating, not rapid whole-room recovery.

The integrated handle and built-in control panel matter more than they sound on paper. You can move the heater from a home office to a bedroom without hunting for a separate remote, then set it where the warmth is useful. If you want to compare the wider range of DeLonghi oil-filled radiators, look for the same quiet-heating advantage alongside differences in controls and heat-up behavior.

Best use
Choose this style for a closed room where you want low-noise background heat. A fan-forced heater makes more sense for a chilly space that needs a quick temperature bump.
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Measure The Room Before You Buy

The DeLonghi ComfortTemp is commonly presented as covering up to about 300 square feet, but that figure assumes a reasonably contained room; insulation, ceiling height and drafts can change the result sharply. The plain rule is simple: it suits a closed medium room better than a large, leaky or open-plan space.

Searches for how many squares the DeLonghi heater heats usually lead to the 300-square-foot claim. A DeLonghi full-room radiant heater review should treat that number as a planning ceiling, not a promise that every 300-square-foot room will feel comfortable. “Full room” means the heater can warm the space under suitable conditions, not that every cold corner will match the area near the unit.

Worked example
Say a room measures 15 by 20 feet: 15 × 20 = 300 square feet. In a closed room with average insulation and a normal ceiling, the heater may be a sensible match. Put that same 300-square-foot room above an unheated garage, add drafty windows and an open doorway, and heat escapes faster than the radiator can replace it. The headline area stayed the same; the heat loss did not.
Room size15 × 20 ft
Area300 sq ft
ResultMay fit a closed room; likely disappoint

Size by room conditions, not headline wattage alone. Check whether the door can stay closed, note cold exterior walls and windows, and account for a high ceiling before deciding that 1,500 W settles the question. Wattage tells you the electrical input; it doesn’t measure how quickly your room loses heat.

Room-fit check
For a large open area, a second heat source or a heater designed for larger rooms is usually more sensible than expecting one radiant unit to cover the whole footprint. The DeLonghi Convection Panel Heater may suit a different layout, while the DeLonghi Mica Panel Space Heater is worth comparing when quick, quiet spot heat matters.

Check Running Cost Before You Leave It On

A DeLonghi ComfortTemp heater costs about 1.5 kWh for every hour it runs at its full 1,500 W setting, so a delonghi comfort temp heater review should include runtime—not just wattage. The same applies to a delonghi convector heater review or delonghi convection heater review: electricity use follows the hours the heating element is energized.

1.5 kWh
Energy used per full-power hour
A 1,500 W heater uses 1.5 kWh in one hour. Multiply 1.5 by your hours per day, then by your days of use and electric rate.
HeaterWattsPer hourPer day (8 h)Per month (30 days)
DeLonghi ComfortTemp at full power1,500 W26¢$2.04$61.20
Calculated at 17¢ per kWh. Uses 1,500 W, 8 hours per day, 30 days, and an assumed electric rate of $0.17 per kWh.

The plain arithmetic is 1.5 kWh per hour × 8 hours × 30 days × $0.17 per kWh. That full-power example is a ceiling for a thermostat-controlled room, since the heater can stop heating after the room reaches its target temperature, then turn back on as heat leaks away.

ECO Plus can reduce runtime or power draw, but the saving depends on the room’s heat loss. A tight office may cycle off often; a drafty bedroom may keep calling for heat. Leaving any heater on longer than needed costs more than the wattage label suggests, because the clock keeps doing its quiet little job.

Use the timer deliberately
Set the timer for the hours you actually occupy the room, then lower the setting or switch the heater off when you leave. Compare that schedule with the full 8-hour example rather than assuming ECO Plus makes operation free.

Safety Features And Bathroom Limits

The built-in tip-over switch and overheat protection are the key safety features to look for, but they don’t make the DeLonghi ComfortTemp bathroom-safe by default. Searches for “bathroom safe 1200w radiant heater radiator space heater trn0812t delonghi.com,” “delonghi bathroom safe 1200w radiant heater,” and “delonghi bathroom safe 1200w radiant heater trn0812t” point to a model-specific question: check that exact heater’s listing and manual.

This unit is an indoor space heater, so don’t assume it belongs in a bathroom or near a splash zone unless DeLonghi specifically says so for that model. Moisture can reach the heater, and bathroom outlet placement may put the cord or receptacle too close to water. A 1200 W bathroom-rated model’s instructions don’t automatically approve a different 1,500 W heater.

Before switching it on
Leave at least 3 feet of clear space around the heater and keep curtains, bedding and towels away.
Plug it directly into a wall outlet; don’t use an extension cord or power strip.
Confirm the exact model’s manual and listing address bathroom use before placing it there.
Keep the heater on a stable, level surface where the tip-over switch can work.
Look for a UL, ETL or CSA safety listing on the heater or its documentation.
Bathroom caution
Don’t use this heater in a wet area based on the word “radiant” or a similar product photo. If the manual doesn’t specifically permit bathroom use, choose a heater listed for that location and follow its required outlet and placement rules.

Tip-over protection cuts operation if the heater is knocked over, while overheat protection responds to excessive internal temperature. Neither control replaces clear space, a sound wall outlet or supervision; protection circuits are a backup, not a permission slip.

How It Compares With Oil-Filled Radiators

delonghi comfort temp full room radiant heater review: How It Compares With Oil-Filled Radiators

DeLonghi Dragon heater reviews, DeLonghi slim style heater reviews and DeLonghi oil radiator heater reviews usually come down to the same choice: the ComfortTemp responds faster, while an oil-filled radiator gives steadier residual warmth. The DeLonghi ComfortTemp suits quick zone heating; the DeLonghi Dragon Digital Oil Filled Radiator Heater suits long, quiet runs in one room.

Inside an oil-filled radiator, an electric element heats sealed oil, and that oil transfers heat to the metal fins. When the thermostat clicks off, the hot oil and fins keep giving off warmth for a while. ComfortTemp’s radiant panel has less stored heat, so its output changes sooner when the thermostat cycles.

FeatureComfortTempOil-filled radiator
ResponseFaster zone heatSlower warm-up
After shutoffLess residual warmthKeeps warming from stored heat
NoiseQuiet, with no fanQuiet, with no fan
Best fitShorter heating periodsAll-day background heat
Both styles are quiet; their heat timing is the meaningful difference.

Choose the oil-filled style when one occupied room needs gentle background heat for hours and you want longer warmth after shutoff. Pick the ComfortTemp when you move between a desk, chair and bedroom or want the room to feel warmer soon after switching it on. Lighter handling also favors the ComfortTemp when you reposition the heater during the day.

ComfortTemp Fits
Quicker response for targeted warmth
Less waiting when changing rooms
Quiet operation without a fan
Oil-Filled Radiator Fits
Slower initial warm-up
Usually heavier to move

For a bedroom or office that needs predictable warmth through a long work session, the Dragon has the smoother feel. For shorter periods of directed heat, the ComfortTemp is the more responsive choice; the oil-filled radiator wins when residual warmth matters most.

Who Should Buy The Dragon Instead

A DeLonghi tower heater review points toward a different shape and use case than this radiant panel: choose a tower heater if a narrow footprint matters, but don’t assume the DeLonghi tower heater or DeLonghi slim style heater is automatically better for a large room.

Buy the ComfortTemp for a quiet bedroom, home office or other enclosed room where you want programmable radiant heat without fan noise. Its 24-hour timer and LED display help you set predictable heating periods instead of leaving the control to guesswork.

Choose the Dragon instead for all-day background heat in one room, especially when longer residual warmth after a thermostat cycle matters. Skip both compact radiant choices if you’re heating a very large room or a drafty basement; reducing air leaks and choosing a heater sized for that space comes first.

Buy ComfortTemp If
You want quiet bedroom or office heat
A 24-hour schedule suits your routine
You prefer faster zone heating
Choose Dragon Instead If
You want longer warmth after shutoff
The heater will run as background heat for hours

Use this buying rule: pick ComfortTemp for scheduled, quiet zone heat; pick the Dragon when stored warmth and long background operation matter more than quick response.

DeLonghi ComfortTemp Alternatives

If you need faster heat
De'Longhi Convection Panel Heater

De’Longhi Convection Panel Heater

Best for Medium to large rooms where quicker air distribution matters
The convection panel heater is the better alternative when moving warm air around the room matters more than the Dragon’s oil-filled feel. Its dual lateral fan system improves heat distribution, and you can use it freestanding or wall mounted.
Why it made the cut
Dual lateral fan system spreads heat more evenly
Freestanding or wall-mount installation
Thermal shutoff and internal tip-over switch
Good to know
Fan-assisted design may be less appealing for sleepers or dust-sensitive rooms
Skip it if Skip it if you specifically want fan-free radiant heating.
Slim wall-mount pick
De'Longhi Mica Panel Heater

De’Longhi Mica Panel Heater

Best for Rooms where a slim, movable heater needs flexible placement
The mica panel heater keeps the profile slim while offering freestanding or wall-mounted placement. Two heat settings, an adjustable thermostat and standby protection below 41°F give you more control than a basic panel heater.
Why it made the cut
Slim design with carry handle
Two heat settings and adjustable thermostat
Standby setting helps prevent frozen pipes below 41°F
Good to know
No timer is listed in the product data
Skip it if Choose the Dragon if a 24 hour timer is central to your heating routine.

Questions People Ask

Is the DeLonghi ComfortTemp radiant heater good for a bedroom?
Yes, it suits a bedroom when you want quiet, steady warmth during occupied use. Keep it on a wall outlet with 3 feet of clearance, and don’t leave it running while you sleep unless the manual specifically allows that use.
How many square feet does the DeLonghi heater heat?
The heater is commonly rated for rooms up to about 300 square feet, but drafts and insulation can shrink that practical range. A contained bedroom or office is a better match than a tall, leaky room with several exterior walls.
How much does the DeLonghi ComfortTemp cost to run per hour?
At full power, 1,500 W equals 1.5 kWh per hour. At 17 cents per kWh, that works out to about 26 cents per hour; the thermostat may reduce the actual average by cycling the heater off.
Can you use the DeLonghi radiant heater in a bathroom?
Don’t assume so. Use it in a bathroom only if the manual specifically permits that location and your local electrical requirements are met; otherwise, choose a heater designed and listed for bathroom use.
What is the difference between this heater and an oil-filled radiator?
The radiant panel sends heat toward nearby people and objects with little operating noise, while an oil-filled radiator stores heat in its fluid and releases it more gradually after cycling off. Choose the panel for quicker targeted comfort and the oil-filled design for slower, steadier room heating.
Does the DeLonghi ComfortTemp heater make much noise?
Very little: its radiant design doesn’t need a fan to move heat. You may still hear normal thermostat or control cycling, but it won’t have the continuous airflow sound of a fan heater.

Joye Editor

HeaterGuides covers home heating, water heating and HVAC: how the equipment works, what it costs to run, and how to use it safely.

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