The DeLonghi TRD0715T 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.
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 TRD0715T oil-filled radiator takes quite a while to initially heat up, but it then provides steady, warm heat, even long after power is removed -- and enough of it to earn at least one expert recommendation as the best 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 terrific and economical choice.
Simple, analog controls. Those looking for the snazziest, digital controls on the DeLonghi TRD0715T oil-filled radiator will be disappointed, but its analog thermostat and switch to select output levels (700, 800 and 1,500 watts) are easy to use. A 24-hour timer is the most notable convenience feature. While some users grouse that it could be more accurate, it still effectively lets you get heat up and running well in advance of you needing it -- a boon considering that like all oil-filled-radiator-style space heaters, the DeLonghi TRD0715T takes a while to warm up a room. One downside TheSweethome.com finds, is that the timer needs to be set before the space heater will turn on. Given its nearly 25-pound weight, the TRD0715T isn't the most portable space heater, but it does have wheels that let you push it around -- something that's easier over wood or tile floors than carpet.
Stays cool to the touch. Touching a standard radiator when it's hot is not a pleasant experience. However, the DeLonghi TRD0715T oil-filled radiator 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. This oil-filled radiator gets dinged in some user reviews for an odor the first few times it is turned on, though some complain that it can last longer than that. Most reviews either don't mention this or express little concern, however. If you are sensitive to odors, you should run this heater in a well-ventilated space for time before moving it into a room. Some might simply find that they are happier with a different type of space heater.
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The DeLonghi TRD0715T Safeheat 1,500 W Portable Oil-Filled Radiator is judged to be the best radiator for larger rooms here. It's slow to warm up, but effective for providing all day heat, and to keep warming up spaces long after it is turned off. Its quiet operation is welcome in living rooms, TV rooms, and bedrooms.
Review: The Best Space Heaters, Seamus Bellamy, Nov. 24, 2013
ConsumerReports.org tests and compares space heater models using six testing criteria, including effectiveness of heating a room and capabilities as a personal heater, fire safety, ease of use, noise and surface heat. The DeLonghi TRD0715T is one of three radiator-style space heaters rated.
Review: DeLonghi TRD0715T, Editors of ConsumerReports.org, Not Dated
Nearly 700 owners review the DeLonghi TRD0715T oil-filled radiator at Amazon.com. Most praise its quiet convection heat, but some report a variety of quality-control issues or problems with odors. It earns an overall rating of 3.9 stars.
Review: DeLonghi TRD0715T Safeheat 1500W Portable Oil-Filled Radiator with Vertical Thermal Tunnels, Contributors to Amazon.com, As of October 2014
About 50 owners review the DeLonghi TRD0715T oil-filled radiator. Most owners like it, saying that although it takes a while to heat up, once warm it easily heats a large room. Some reviewers point out that the heater can get hot to the touch, and because the coils aren't visible and there's no fan running, it's hard to tell whether it's on.
Review: DeLonghi Portable Oil-Filled Electric Radiator Heater TRD0715T Reviews, Contributors to Viewpoints.com, October 2014