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The Spruce / Rachel Marek
A space heater can provide you with warmth and comfort during chilly weather, while also helping to keep your energy bills low when it's used as a supplemental heat source. Radiant and convection space heaters both accomplish this purpose, but they use two different heating methods.
Larry Campbell, a master electrician and member of The Spruce Home Improvement Review Board, explains that convection heaters “include a fan that blows the heat in a chamber to get hotter and hotter to warm the air.” A ceramic element heater is an example of a convection heater, while an infrared quartz heater is a type of radiant heater. “A hot wire passes an electrical current through the quartz element to the 'neutral' side. That heat is radiant," Campbell explains. It’s good for warming people and objects in the path of the radiant heat, but not as effective at raising the air temperature in a room.
We researched and tested some of the top radiant and convection space heaters on the market and evaluated them on heating performance, design, safety, and effectiveness. Our favorite is the Pelonis Ceramic Tower Space Heater for its even heat distribution, safety features, and compact design.
Here are the best radiant and convection space heaters on the market.
Best Overall, Convection
Pelonis Ceramic Tower Space Heater
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Amazon
Space-saving tower design
Heater housing doesn’t become overly hot
Digital control panel with remote control
Oscillation feature
User manual isn’t very clear on some functions
Lacks a fan-only mode
The Pelonis Ceramic Tower Space Heater is our top recommendation for a convection space heater. This type of space heater gradually warms the air in the room by sending hot air to the ceiling and warming the cooler air that the heater takes in near the floor. When testing this ceramic heater in our lab, we found that it did an excellent job of evenly distributing heat and felt the warmth on all sides, not only in front. At the same time, the heater's housing didn’t become hot to the touch, which is a common concern about using space heaters around children and pets. Plus, it includes a remote for easy control of the unit from anywhere in the room.
This heater's digital display makes it simple to set a target temperature up to 92 degrees Fahrenheit. It operates on High, Low, or Eco mode and also includes an eight-hour timer. We found that, like other tower-style heaters, this heater has a small footprint, which is helpful in compact spaces. We also appreciated the oscillating feature, although we wish it had a fan-only mode so we could use it year-round.
It's worth noting that this heater does not come with a manual, and we had to resort to a bit of trial-and-error to figure out some of the features. However, this heater impressed us with its heating performance and safety features, like a tip-over switch and automatic overheating shut-off.
Price at time of publish: $75
Dimensions: 7.1 x 7.1 x 22.95 inches | Heating Element: Ceramic | Wattage: 1500W | Weight: 6.29 pounds | Safety Features: Overheat protection, tip-over shutoff
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The Spruce / Rachel Marek
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The Spruce / Rachel Marek
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Rachel Marek
Best Overall, Radiant
DeLonghi TRD50615E Oil-Filled Space Heater
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Courtesy of Home Depot
Quiet operation
On wheels for portability
Safety features
Digital display is not intuitive
A radiant space heater delivers heat into the room, even after the heater is shut off. Oil-filled radiator-style space heaters, like the DeLonghi Oil Filled Space Heater, are a tried-and-true way of raising the temperature of a room in an economical way. We recommend this radiant space heater for its quiet operation, notable safety features, and sturdy, portable design.
The DeLonghi TRD50615E has a sealed, oil-filled reservoir that never needs refilling. The heater warms the oil inside of the reservoir, and this heat is radiated into the room. Even after the unit turns off, the residual warmth continues to be released. You can modify the operation of this radiant heater by setting a target temperature and choosing from four power levels (Min, Med, Max, and Eco), or setting a 24-hour timer with up to two temperature settings. While the digital display is not self-explanatory, the user manual provides helpful information on what the icons represent and guides you through the various features and functions.
Radiant oil-filled space heaters aren’t as compact or portable as some other options, but DeLonghi equips this model with four wheels so that it can be moved from room to room. It also checks several boxes for safety features: overheat protection, tip-over shut-off, and a child lock.
Price at time of publish: $160
Dimensions: 26.1 x 10.3 x 16.4 inches | Heating Element: Oil-Filled | Wattage: 1500W | Weight: 26.6 pounds | Safety Features: Tip-over shutoff, child lock, overheat protection
Best Budget
Kismile Portable Electric Space Heater
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Amazon
Heats up very quickly
Simple dial controls are easy to use
Tip-over shutoff and overheat protection
Fan operation is noisy
Poor heat distribution
Small but mighty is how we’d describe the Kismile Portable Electric Space Heater after testing it in our Lab. Despite its compact size, it heats up quickly and is ideal for use as a personal space heater or for a small, confined space—like under a desk or sewing table—since we noted that the heat is concentrated in the front of the heater.
While this affordable choice offers no digital display or remote, the dial controls are clearly labeled and easy to turn. One of the dials offers a low, heat, and fan-only setting, while the other allows you to control the power level of each of those settings. This fan offers safety features, including overheat production and tip-over shutoff. In fact, our tester noted that “the heater shuts off with the slightest nudge." They added, "There is a trigger on the bottom of the unit that shuts off when tipped in any direction!” However, if you are looking for a quiet heater, this is not the best option, as the fan noise was our biggest complaint during testing.
Price at time of publish: $28
Dimensions: 7.28 x 6.5 x 9.65 inches | Heating Element: Convection | Wattage: 1500W | Weight: 3.43 pounds | Safety Features: Tip-over shutoff, Overheat protection
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The Spruce / Rachel Marek
Best Fireplace
Duraflame 3D Infrared Electric Fireplace Stove
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Amazon
Excellent heat output with adjustable thermostat
Hidden digital controls and included remote control
Flame-only setting
Quiet operation
Front grill of the heater becomes very warm
Remote control functions are not self-explanatory
For a functional yet aesthetic space heater, we recommend the Duraflame 3D Infrared Electric Fireplace. Available in a range of colors to match your decor, it features realistic-looking flames, logs, and embers with adjustable brightness settings. We tested the heater’s function on all settings and found the heat output to be worthy of 5 stars.
The infrared quartz heating element works in conjunction with an adjustable thermostat that can be set from 62 to 82 degrees Fahrenheit. To understand how an infrared quartz element works, Campbell, a master electrician and member of The Spruce Home Improvement Review Board explains that it’s “like a lightbulb that gets hot and that radiates the heat.” This heater also has a timer setting that can be adjusted from 30 minutes to nine hours. We like that the realism of the fireplace space heater is enhanced by the fact that the heater’s controls are hidden behind the fireplace door. It comes with a remote control so you don't need to leave the couch to change the settings, although we found the features to be a little confusing to use at first.
The Duraflame 3D Infrared Electric Fireplace is more expensive than many of the other heaters we tested, but we found that it's worth the price, since you can use it year-round for a cozy ambiance without the heat. “This would not only be useful as a heater but is decorative and would be nice on a porch or smaller room,” our tester noted. It’s equipped with a sensor to shut-off the unit if it overheats, but the front grille of the space heater can get very warm. However, the sides and body of the heater weren’t overly warm to the touch.
Price at time of publish: $300
Dimensions: 24 x 12.9 x 23.4 inches | Heating Element: Infrared quartz | Wattage: 1500W | Weight: 28 pounds | Safety Features: Overheating protection
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The Spruce / Rachel Marek
Best for Large Spaces
Honeywell ThermaWave 6 Ceramic Technology Space Heater
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Amazon
Outstanding heat output
Heater doesn’t become hot to the touch
Fan-only setting
Not as energy-efficient as other models
Air vent can’t be directed downward for heating feet or floor
The Honeywell ThermaWave 6 is an outstanding option for heating large spaces, thanks to its directional heat output, user-friendly digital controls, and well-engineered safety features. When testing this space heater, it raised the temperature on the thermostat by 4 degrees in 30 minutes. We were also impressed by the discernible difference between the heat output on low and high settings, an area of performance where some other heaters fell short. However, note that its heating power will create a draw on your power supply, compared to other heaters we tested, as we noted that “the watts per hour of use was higher than the general 1.5 threshold.”
During testing, we noted that the vents can be directed straight ahead or upward, which is helpful for directing the airflow around a large room. However, we did wish they could be directed downward towards the floor to warm our feet.
Our favorite feature of the Honeywell ThermaWave 6 is the digital controls, with options for pre-programmed temperature settings ranging from 65 to 80 degrees and a fan-only function. “The control panel is easy to use and intuitive with well-marked icons that are illuminated when in use,” our tester noted. There is a tip-over switch that disables the unit if it’s tipped in any direction, along with two overheating sensors, and cool-touch plastic housing. The built-in handle on the back of the heater stays cool and has a nice grip, which makes the unit easy to move.
Price at time of publish: $91
Dimensions: 24 x 12.9 x 23.4 inches | Heating Element: Ceramic | Wattage: 1500W | Weight: 13.17 pounds | Safety Features: Automatic timer shut-off, overheat protection, tip-over shutoff, and cool-touch housing
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The Spruce / Rachel Marek
Best Wall Mounted
Heat Storm Phoenix Infrared Space Heater
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Amazon
Thin profile saves space on the wall
Quiet operation
Modern design with digital controls
Remote control is small
Feet seemed somewhat flimsy
Of all the radiant and convection space heaters we tested in the Lab, the Heat Storm Phoenix Infrared Space Heater is our top pick for a wall-mounted option. We like that it has a thin profile, so it won't take up much space on a wall. Its versatile design allows you to use it on the floor as well by attaching the included feet. We found the feet to be a bit flimsy during testing, but they did keep the unit stable.
Heating performance was most impressive on high with this space heater. Our tester noted that there wasn’t much heat generated on the low setting, but it also may have been because the heater’s target temperature and air temperature were similar. With this in mind, the heater earns 4 stars for heating performance. It operates quietly and has a variety of settings, which you can control using the included remote. This is an important feature for a wall-mounted heater, which may make the controls difficult to reach. The remote is small, and it took multiple presses of a button to activate the features.
Price at time of publish: $120
Dimensions: 18 3/4 x 4 1/2 x 12 3/4 inches | Heating Element: Infrared quartz | Wattage: 1500W | Weight: 8 pounds | Safety Features: Tip-over shutoff, overheating protection, child lock, cool-touch housing
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The Spruce / Rachel Marek
Best Portable
Dr. Infrared Heater Portable Space Heater
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Amazon
Wheels for easy maneuverability
Variety of safety features
Unique look
Weighs 25 pounds
Design and finish may not fit all decor
Stay warm in any room with the help of a portable space heater, like this model from Dr. Infrared. It combines convection and infrared heating technology to heat spaces up to 1,000 square feet and is equipped with wheels for better mobility.
When testing the Dr. Infrared Portable Space Heater, we found that it emits a steady heat source. It was capable of raising the temperature in a large primary bedroom to 70 degrees in less than 30 minutes, despite nearly freezing outdoor temperatures. However, during our Lab testing, the low and high settings didn’t result in dramatically different heat output.
The safety features of this heater add to our confidence in recommending it as a portable space heater. The wheels, while handy for rolling it from one room to another, also mean that it’s harder to tip over when compared to tall, tower-like space heaters. But in case it were to tip over, it has an automatic shut-off.
Price at time of publish: $130
Dimensions: 12 1/2 x 17 x 13 inches | Heating Element: Infrared quartz and ceramic | Wattage: 1500W | Weight: 25 pounds | Safety Features: Tip-over shutoff, overheating protection, automatic timer shut-off
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Best Splurge
Atomi Smart Wireless Tabletop Heater
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Amazon
Quick to heat up
Great features and digital display
Alexa- and Google Assistant-compatible
Quiet operation
App set up a bit tricky
Slight smell on highest setting
A smart space heater is worth the spend for the convenience and handy features it offers. The Atomi Smart Wireless Tabletop Heater impressed us with its touchscreen digital display, resulting in a 5-star rating for design. The heater also sends notifications through its app and allows you to remotely control the unit, using the app or Amazon Alexa and Google Home. It costs over $60 but is a great addition to your smart home and does its job to warm you up.
Of course, the smart features are handy to have, but only if the space heater actually works. The good news is that our tester found it to function efficiently and effectively. After five minutes, our tester described the unit as quick to heat up and reported a noticeable increase in body temperature. It offers other useful features, like an option to oscillate and an eco-mode for energy savings. It has a tip-over shutoff that functioned well when tested, along with an overheating sensor and a red light to indicate when the heater is active (or still warm from use).
Note that the housing of the heater was warm to the touch during testing (although not too hot), and we detected a smell when the heater was operating on high. We also had a hard time locating the unit on the app, but once we did get it set up, it was easy to control using our phones.
Price at time of publish: $86
Dimensions: 8.27 x 9.06 x 18.11 inches | Heating Element: Ceramic | Wattage: 1500W | Weight: 4.6 pounds | Safety Features: Tip-over shutoff, app notifications
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The Spruce / Rachel Marek
The Pelonis Ceramic Tower Space Heater is our top recommendation for a convection space heater. In our testing, we found that it does an excellent job of distributing warm air around the room and it has a digital touchscreen and remote control. On the other hand, a radiant space heater like the DeLonghi TRD50615E Oil-Filled Space Heater will prove to be a source of long-lasting heat. This model has digital controls and wheels that make it easy to move from room to room, and it operates quietly.
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The Spruce / Rachel Marek
What to Look for in a Radiant and Convection Space Heater
Heater Type
Space heaters are classified by their heating mechanisms. There are two primary types of space heater: convection and radiant. If you want to use a space heater as a supplemental heat source to warm a room, look for a convection-type heater. For example, our top convection heater is the Pelonis Ceramic Tower Space Heater. If you’re looking for a space heater to warm up people or objects directly, then pick a radiant-type heater. It’s a better choice in large, open spaces or rooms with a draft where it may be a challenge to warm the ambient air temperature. Our favorite choice for a radiant heater, the DeLonghi Oil Filled Space Heater, is a radiator-style heater that is on wheels, so you can move it from room to room when needed.
Size
Most space heaters are relatively compact in size, although personal space heaters will be the smallest option and fit well under a desk or table, like the Kismile Portable Electric Space Heater, our best budget option. Space heaters for medium- to large-size rooms will have larger heating elements and naturally will be bigger in size. Our best pick for a larger space is the Honeywell ThermaWave 6, which warmed our testing space by 4 degrees in only 30 minutes.
You should match the size of a space heater to the room it will be used in, keeping in mind that a compact, personal-size space heater won’t do much to warm a large, open space, while a bigger space heater may quickly overpower a small room with too much heat.
Consider not just the dimensions of a space heater but also its weight, especially if you’re looking for a space heater that is portable enough to move around. Some larger space heaters are equipped with wheels to make moving them easier, like our pick for the best portable space heater, the Dr. Infrared.
Safety Features
Don’t overlook the importance of safety features when choosing a space heater for your home. The National Fire Protection Association recommends that a heater have a thermostat and an automatic shutoff if the unit overheats. Many heaters also feature a shutoff mechanism if the heater tips over, which is also recommended by the NFPA. These features are important if you have children or pets in the home, since they could accidentally knock the space heater over. Cool-touch housing is something to consider, since it reduces the possibility of being burned by a space heater that has become hot to the touch from use.
Heat Output
The heat output of a space heater is measured in watts. Most residential space heaters have a maximum heat output of 1,500 watts, including all of the heaters on this list. Some of these heaters offer a high and low setting, with the low setting usually outputting 750 watts of power, according to Larry Campbell, a master electrician and member of The Spruce Review Board.
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The Spruce / Rachel Marek
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What is the difference between a radiant and convection space heater?
A radiant heater puts out heat that is absorbed by people or objects in front of the heater. A convection space heater warms the air in a room, so it will gradually raise the room’s temperature.
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Which is more energy efficient to run, a radiant or convection space heater?
That depends on your purpose for operating the heater. In a large room, it may take a convection space heater a long time and a lot of energy to effectively increase the temperature of the room. In this instance, a radiant heater to provide warmth you can feel would likely be the more efficient choice. However, if you’re trying to use zone heating to warm a room and reduce the run time of your house furnace, then a convection space heater will be more efficient.
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How hot do radiant and convection space heaters get?
Radiant and convection heaters measure their heat output in watts. Campbell says that “low settings are normally 750 watts, and high settings are 1500 watts.” In terms of temperature, most space heaters with an adjustable thermostat can be set to a temperature in the mid-80 degree Fahrenheit range, while some options go even higher. Our pick for the best overall convection space heater, the Pelonis Ceramic Tower Space Heater, has a maximum temperature setting of 92 degrees Fahrenheit.
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Are radiant and infrared space heaters the same?
Infrared space heaters produce radiant heat. But not all radiant heaters are infrared. For example, the DeLonghi TRD50615E, our pick for the best radiant space heater, is an oil-filled model that radiates heat.
Why Trust The Spruce?
This article was written by Erica Puisis, who has covered heating and cooling products on The Spruce since 2019. She compiled picks for this article by using testing insights from the Lab and at-home product testers who put some of the most popular radiant and convection space heaters through their paces. Products were compared based on their design, safety features, heating performance, and other factors that affect usability. Larry Campbell, a master electrician and member of The Spruce Review Board, also shared information on the various types of space heaters, along with information about their heating mechanisms and wattages.