10 Best Oil Heaters 2025 in the United States

The PELONIS PHO15A2AGW is a 1500W oil-filled radiator that offers reliable room heating with quick heat-up and gentle warmth that doesn’t dry out the air. It features three adjustable power settings (600W, 900W, 1500W), which helps you control your energy use and lower heating costs. The built-in adjustable thermostat lets you maintain a comfortable room temperature without constant manual adjustments. Safety is well covered with an automatic shut-off if the heater tips over and overheat protection, plus a power indicator light to confirm when it’s on. It operates very quietly due to its fanless design, making it ideal for bedrooms or offices where noise can be distracting.

The unit is fairly large but equipped with four casters and a front handle, so moving it between rooms is manageable. While it covers an average room size (about 160 square feet), it’s best suited for indoor use in spaces like bedrooms, home offices, or smaller living areas. One downside is that the heater weighs around 16.7 pounds, so though portable, it might require some effort to move regularly.

Although the heater is energy-efficient compared to older models, its heat output is limited to moderate room sizes and might not suffice for larger or draftier areas. This Pelonis oil heater represents a solid choice if you want quiet, adjustable heating with safety features and decent portability for small to medium indoor rooms.

The De'Longhi Dragon Digital Oil Filled Radiator Heater stands out with its 1500W heating power, making it suitable for warming small to medium-sized spaces like bedrooms and home offices. One of its key strengths is the digital control panel with an LED display, which allows for easy programming and control over a 24-hour timer. Plus, it features a unique design that increases the radiant surface area, leading to more efficient heat transfer and quicker warm-up times. Users will appreciate the gentle heat that minimizes dry air and avoids dust circulation, creating a more allergy-friendly environment.

Safety is another focal point of this heater, equipped with child locks, thermal cut-off, and an anti-freeze setting that activates when temperatures drop, ensuring peace of mind during use. Its ergonomic design, including integrated handles and Smart Snap wheels, makes it easy to move between rooms.

The heater is designed for quiet operation; however, some users may still find it less than completely silent. Additionally, its weight of 26.6 pounds can make it less portable for some, especially when compared to lighter models. While the heater is energy-efficient with the ECO Plus feature, it may still consume more electricity than other heating options, particularly if used extensively. The De'Longhi Dragon heater is a solid choice for those needing reliable, safe, and efficient heating in their homes, although it might not be the best fit for those prioritizing ultra-light portability or silent operation.

The Pelonis Oil Filled Radiator Heater is a solid choice if you want a reliable, quiet way to warm up rooms around 250 square feet, like bedrooms or home offices. It offers a decent heating power of 1500 watts, with three adjustable modes (600W, 900W, 1500W) that help you save energy by using only what you need. Thanks to its advanced oil and 7 fins, heat spreads evenly and warms your space faster than older models. The adjustable thermostat lets you control the temperature comfortably, avoiding overheating.

Safety is a big plus here. It has both overheat protection and tip-over protection, which means it automatically shuts off if it gets too hot or if it accidentally tips over—great peace of mind for homes with kids or pets. The heater runs almost silently once it warms up, so it won’t disturb your sleep or work. It’s also easy to move around thanks to smooth caster wheels and a manageable size (roughly 25 by 14 by 11 inches), though it’s a bit on the heavier side at over 17 pounds.

One downside is that while the heater is energy efficient for its type, oil-filled radiators generally take longer to heat a room compared to some other heater types, so it’s not for those wanting instant warmth. Also, it’s designed for indoor use only and might not be the best fit if you need something very compact or ultra-lightweight. The controls are simple knobs, which are user-friendly but might feel a bit basic if you prefer digital settings or timers. This Pelonis model is ideal for anyone looking for a quiet, safe, and energy-conscious heater for medium-sized indoor spaces, especially if you appreciate steady warmth without distractions.