10 Best Oil Heaters 2025 in the United States

The Amazon Basics Oil Space Heater is a solid choice for anyone looking to warm up their indoor spaces efficiently and quietly. With a powerful 1500W output and three adjustable heat settings, it gives users the flexibility to select their desired warmth, making it versatile for various room sizes and preferences. The built-in thermostat ensures that the heater maintains a consistent temperature, which is a great energy-saving feature that helps lower heating costs.

One of its standout strengths is the maintenance-free design, thanks to the permanently sealed oil that eliminates the need for refills. The seven oil-filled fins enhance heat dispersion, providing a comfortable and even warmth, even after the heater is turned off. This is particularly beneficial in cooler climates where consistent heating is essential.

The heater operates quietly, making it suitable for bedrooms and offices where noise levels need to be kept low. Additionally, safety features like tip-over protection and overheat protection enhance user confidence, especially in households with children or pets.

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 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.