De’Longhi 1500W Oil Heater Review: Best for Bedrooms?
On this page 9 sections
- At a Glance
- Top De’Longhi 1500W Oil Heater Picks
- Is A De’Longhi 1500W Oil Heater More Efficient Than A Baseboard Heater
- Choose The Right De’Longhi Model For Your Room
- Measure The Room Before You Buy
- Check Running Cost Before You Decide
- Use The Safety Features The Right Way
- What To Do Next If You Want One Now
- Questions People Ask
The common mistake is buying a 1,500 W oil radiator for the room size, then expecting fast heat from cold. That usually means a heater running longer than you planned, which is where the bill sneaks up.
A better buy is the model that matches how you live: simple controls for a bedroom, a timer for a schedule, or more radiant surface if you want heat to feel stronger in a bigger space.
At a Glance
| Model | Best for | Heat output | Controls | Room fit | Mobility | Price |
|---|---|---|---|---|---|---|
| De’Longhi EW7707CM Oil Radiator | Best for most rooms | 1,500 W | Analog with ComfortTemp | Bedrooms, offices | Handle and snap wheels | Why it is here |
| De’Longhi TRD40615E Dragon Digital | Best with a timer | 1,500 W | Digital, 24-hour timer, ECO Plus | Bedrooms, living rooms | Handle and control panel | Why it is here |
| De’Longhi TRD40615EBK Dragon Digital Black | Best black finish | 1,500 W | Digital, 24-hour timer, ECO Plus | Bedrooms, living rooms | Handle and control panel | Why it is here |
Top De’Longhi 1500W Oil Heater Picks
De’Longhi EW7707CM Oil Radiator
De’Longhi TRD40615E Dragon Digital
De’Longhi TRD40615EBK Dragon Digital Black
Is A De’Longhi 1500W Oil Heater More Efficient Than A Baseboard Heater
A 1,500 W De’Longhi oil radiator and a 1,500 W electric baseboard heater pull the same wattage from the outlet when they’re running, so the electricity cost per hour is identical at full power. The difference shows up in how often each one runs and how the heat feels once the room warms up. Oil-filled radiators hold thermal mass: the oil inside stays hot after the heating element clicks off, so the unit keeps radiating warmth while drawing zero watts. A baseboard heater goes cold the moment it stops pulling power.
Where the oil radiator can save you money is in shorter duty cycles. Once the thermostat is satisfied, the oil keeps the room temperature stable longer, so the element may fire less often than a baseboard that has no thermal buffer. You won’t see half the bill, but over a month the difference can add up to a few dollars in a room you heat every evening.
The real reasons to choose one over the other come down to comfort and noise. Oil radiators run silent—no fan, no ticking from expanding metal—and the radiant warmth feels even across the room. Baseboard heaters tick and ping as the fins heat and cool, and convection can leave cold spots near the floor. If the room already has permanent baseboard heat wired to a wall thermostat, adding a portable oil radiator won’t save you anything; you’d be better off using what’s installed and setting the thermostat correctly.
Choose The Right De’Longhi Model For Your Room
The three De’Longhi models at the top of this page all use the same 1,500 W heating element and radiate heat from seven to nine vertical fins, but the De’Longhi Oil filled Radiator Heater (product 1) wins for most bedrooms and home offices because it keeps controls simple, runs quietly, and uses ComfortTemp to dial back power once the target temperature is reached. The De’Longhi Dragon Digital Oil Filled Radiator Heater (product 2) adds a digital panel and a 24-hour timer, useful if you want the room warm before you wake up. Product 3 is the same digital control set wrapped in a black cabinet instead of white, so pick it only if the finish matters in your space.
| Feature | Product 1 | Product 2 | Product 3 |
|---|---|---|---|
| Control type | Dial knobs | Digital panel | Digital panel |
| 24-hour timer | No | Yes | Yes |
| ComfortTemp | Yes | Yes, plus ECO Plus | Yes, plus ECO Plus |
| Surface finish | White | White | Black |
| Best for | Simple daily use | Scheduled heating | Matching dark decor |
Product 1 earns the top spot because the dial thermostat and manual controls work the moment you plug it in, with no menus to navigate when you’re cold. ComfortTemp holds the room at a set point without cycling hard on and off, which saves a little energy and keeps noise low. The fins stay cooler to the touch than older oil radiators, a real advantage if kids or pets share the room. Skip it if you need a timer to warm the room before your alarm goes off.
Products 2 and 3 give you a programmable timer and ECO Plus, which adjusts heat output to match room temperature more precisely than a simple thermostat. That digital panel shows the current and target temperatures, helpful if you want to track what the heater is doing. The tradeoff is a slightly higher price and more buttons to learn. Both models use the same internal heater and the same Dragon fin design, so the black cabinet on product 3 is the only reason to choose it over product 2.
None of these models heat a room quickly. Oil radiators take fifteen to thirty minutes to bring a cold bedroom up to temperature because the oil inside must warm first, then radiate that heat outward through the metal fins. A ceramic fan heater will blow warm air across the room in two or three minutes, so if instant heat is the priority, an oil radiator is the wrong tool. Where oil radiators win is quiet, steady warmth once they reach temperature, and they keep radiating heat for ten or fifteen minutes after the element clicks off, something a fan heater cannot do.
Measure The Room Before You Buy
Sizing a 1,500 W oil heater starts with square footage, but the real question is whether the room holds heat or bleeds it out through windows, walls and gaps under the door. Most oil-filled radiators at this wattage work well in bedrooms and offices between 120 and 180 square feet if the insulation is decent and the ceiling is standard height. Go much larger or add poor weatherstripping, and the heater will run longer cycles without ever catching up.
Wattage alone won’t tell you if a heater fits. Two rooms of identical size can feel completely different: one with south-facing double-pane glass and blown-in insulation will stay warm on low, while another with old single-pane windows and an exterior wall facing north may never get there. Count the windows, check for drafts around the trim, and look at the wall construction if you know it. Those details decide whether 1,500 W is enough or just barely hanging on.
Ceiling height above eight feet adds volume without adding floor space, so a 150-square-foot room with a ten-foot ceiling needs more energy than the same footprint at standard height. If your room has vaulted or cathedral ceilings, expect the heater to work harder and cycle more often. A basement or slab-on-grade room will also lose heat through the floor, especially if there’s no insulation or carpet between you and the concrete.
Check Running Cost Before You Decide
Running a 1,500 W oil heater eight hours a day costs about $61 a month at 17 cents per kWh, and that number shows up on your bill whether you pick De’Longhi or any other brand. You’re paying for wattage, not the model name. Understanding that math helps you decide if an oil radiator fits your budget or if you need a smaller heater, a programmable thermostat, or shorter run times.
Here’s how the calculation works. 1,500 W is 1.5 kW, so eight hours at full power means 1.5 × 8 = 12 kWh per day. Multiply that by 17 cents and you’ll get about $2.04 per day. Over thirty days that’s $61.20, assuming the heater runs nonstop for those eight hours. ComfortTemp and ECO Plus can cut that by cycling the element on and off once the room reaches temperature, but the savings depend on room insulation, outdoor temperature and where you set the dial. Better insulation means longer off cycles and a lower bill; a drafty room or a thermostat set to 75°F keeps the element firing more often.
| Heater | Watts | Per hour | Per day (8 h) | Per month (30 days) |
|---|---|---|---|---|
| De’Longhi 1,500 W oil radiator | 1,500 W | 26¢ | $2.04 | $61.20 |
If you need heat all day, look at the bill first. $61 a month adds up over a four-month heating season, and two heaters running at the same time doubles it. On the other hand, if you only need warmth for bedtime—say three hours instead of eight—the monthly cost drops to about $23, which feels a lot more manageable. Oil radiators work best when they heat one room for a few hours, not when they’re trying to replace a whole-house heating system.
Use The Safety Features The Right Way
Plug-in oil heaters belong directly in a wall outlet, not an extension cord or power strip. Drawing 12.5 amps through an underrated cord heats the wire itself, and that’s how house fires start. Keep three feet of clearance around the cabinet—no curtains, bedding or coats draped over the fins—and confirm the model carries a UL, ETL or CSA listing before you bring it home. Oil-filled radiator heaters with tip-over and overheat protection shut down automatically if they fall or the internal temperature climbs too high, but those features only work when the sensors aren’t blocked or bypassed.
De’Longhi oil radiators run cooler on the surface than a ceramic heater’s grille, but the cabinet still gets hot enough to burn skin after a few seconds of contact. That lower temperature helps around curious toddlers and pets, yet it doesn’t make the unit safe to touch for long or to leave running unattended. These are indoor electric heaters only, so no sleeping or leaving the house with one running unless the manufacturer explicitly says the model is designed for unattended operation. Most plug-in space heaters, including oil-filled models, are not.
What To Do Next If You Want One Now
Start with the room you want to heat—measure the square footage and walk the space to count windows, check door gaps, and note whether an exterior wall takes up half the perimeter. Rooms under 150 square feet with decent insulation need 1,500 W; larger or drafty rooms will ask the heater to cycle more often, which raises your bill and keeps the fan busier.
Buyers still weighing brands can compare other De’Longhi space heater models or check the Dreo oil-filled 1500W heater for a different control layout. Once you’ve chosen, order, unbox, test the safety switches and set the thermostat two notches below maximum for the first night. Adjust from there.
