DeLonghi EW7507EB Review

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Bottom Line

The DeLonghi EW7507EB oil-filled radiator heats a room by electrically warming an internal supply of oil. The results closely mimic those of a traditional hot water radiator. That means that the DeLonghi doesn't give off much heat at first, but given time, it can warm a large room with ease, according to experts and owners. Also, like a traditional radiator, the heat lasts a good long while after the electricity is turned-off, making it ideal for use in a bedroom, where experts suggest going to sleep with an operating space heater isn't such a hot idea.

ProsEfficient, Quiet, Programmable timer, Long lasting heatConsSlow to heat, No battery back up

Breaking it down

Performance

Slow starts, but exceptional staying power. Experts recommend oil-filled, radiator-style heaters for well-insulated rooms where the heater will be on for long periods. Like similar models, the DeLonghi EW7507EB oil-filled radiator takes quite a while to initially heat up, but it then provides steady, warm heat, even long after the power is turned off -- and enough of it to earn at least one expert recommendation as a good space heater for larger spaces. Still, if you want spot heating or fast heating, a ceramic space heater like the Lasko 754200 (Est. $25) is a better, more economical choice.

Ease of use

Digital controls a plus … and a minus. The DeLonghi EW7507EB features an all-digital control system. Most reviewers find it easy to use, but some bypass the extra features and programming capabilities and just use the manual controls. For others, the dual event 24-hour timer lets you raise and lower temperatures in up to two cycles of up to eight hours each over a day. That means, for example, you can set the radiator to turn on and get the room toasty before you awake, then turn off later in the morning, only to repeat the cycle before you turn in for the night. There's also a remote control for added convenience, but what's not convenient is that the heater's LCD display is judged hard to read by some. The timer also lacks  a battery backup -- unplug the heater or lose power and you'll need to reprogram the timer. Like all oil-filled radiators, the DeLonghi EW7507EB takes a while to warm up a room -- one reason that the timer is such a nice plus. There are three output levels (700, 800 and 1,500 watts) so you can scale the heat output to the size of the room.

Safety

Stays cool to the touch. Touching a standard radiator when it's hot is not a pleasant experience. However, the DeLonghi EW7507EB oil-filled space heater features a design that directs heat upwards, out of reach of children and pets, keeping its sides cool to the touch. There's no tip-over sensor -- but toppling this weighty radiator is something that's unlikely to happen by accident. There is an overheat cut-off for added safety, and the remote control means you never have to touch the radiator at all to set or adjust it. Oil-filled radiators sometimes draw complaints over operating odors, but the majority of user reviews that comment on the EW7507EB's odor either marvel that it's not an issue, or say that smells that can be detected when new are banished forever after a few hours of use.

Noise

A silent operator. Unlike other types of space heaters, oil-filled radiators lack a fan so they are among the quietest whole-room space heaters you can buy. Professional testers and owners agree, the DeLonghi EW7507EB is very quiet. We did see a few comments that noted a clicking sound when the heater cycled on or off, but most did not find it objectionable.

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Lasko 754200 Ceramic Heater with Adjustable Thermostat
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Our Sources

1. TheSweetHome.com

The Best Space Heaters, Seamus Bellamy, Oct. 30, 2015

Seamus Bellamy likes the simpler analog controls of the discontinued DeLonghi TRD0715T a little better, but says that the DeLonghi EW7507EB is an excellent "plan B." It performs identically to the top model, but Bellamy grouses over some "minor irritants," primarily the lack of a battery backup.

2. Amazon.com

DeLonghi EW7507EB Oil Filled Radiator Heater Black 1500W, Contributors to Amazon.com, As of November 2015

More than 480 owners review the DeLonghi EW7507EB oil-filled radiator at Amazon.com, where it earns a 4.1-star score. Most praise its effective convection heat, quiet operation, and relative freedom from odors. A handful, however, report unreliable operation, complain that the digital controls are too complicated, or say that it did not heat as expected.

3. Lowes.com

De'Longhi 5,120-BTU Oil-Filled Radiant Tower Electric Space Heater with Thermostat and Energy Saving Setting, Contributors to Lowes.com, As of November 2015

There are over 180 reviews of the DeLonghi EW7507EB at Lowes.com. More than 80 percent say they would recommend this oil-filled radiator space heater, and it earns a 4.2-star score.