9 Best Portable Radiator Heater 2025 in the United States

The Amazon Basics Oil Heater is a solid choice for indoor heating with a powerful 1500W capacity. It offers three adjustable heat settings (High, Medium, and Low) allowing you to tailor the warmth to your comfort level. This heater uses oil-filled fins, which provide consistent and long-lasting heat, making it energy-efficient and perfect for rooms up to 144 sq ft. One of its standout features is its quiet operation, making it ideal for use in bedrooms and offices without any distracting fan noise.

Safety is well-addressed with ETL certification, including tip-over and overheat protection, automatically shutting off the heater to prevent accidents. This makes it a worry-free option for households, especially those with children or pets. The heater’s portability is another plus, featuring smooth-gliding caster wheels and a convenient handle, making it easy to move from room to room. Its slim, vertical design helps it fit into tight spaces without taking up much floor space.

However, it might be slightly heavy at 17.42 pounds, which could be a consideration for some users. Also, while the heater is efficient, it might take a little longer to heat up compared to fan-based heaters. If you need a quiet, safe, and portable heater for a medium-sized room, this product would be a good fit.

The Amazon Basics Oil Space Heater is a solid choice for anyone needing a portable radiator heater. With a power output that can be adjusted to three settings—High (1500W), Medium (900W), and Low (600W)—it offers flexible heating options suitable for small to medium-sized rooms (up to 150 square feet). The adjustable thermostat allows you to maintain a comfortable temperature, while the seven oil-filled fins ensure even heat distribution and retain warmth longer, which can help save on energy costs.

One standout feature is its quiet operation, making it an excellent option for noise-sensitive areas like bedrooms and offices. Additionally, the heater includes essential safety features, such as tip-over and overheat protection, and it has received an ETL safety certification. Portability is another strong point, thanks to its caster wheels and handle, making it easy to move around the house. The design is user-friendly with simple manual controls, and it requires no maintenance, as the oil inside the fins is permanently sealed.

There are some drawbacks to consider. The heater's size and weight (15.41 pounds) might be cumbersome for some users, and it requires assembly, which could be inconvenient. Furthermore, while it is energy efficient, it might not be powerful enough for larger spaces. This heater is best suited for those looking for a reliable, quiet, and portable heating solution for smaller indoor areas.

The De'Longhi Oil Filled Radiator Heater offers reliable 1500W heating power, suitable for warming small to medium rooms such as bedrooms or home offices. Its thermostat control is user-friendly, with simple knobs and a ComfortTemp feature that helps maintain an optimal temperature efficiently, potentially saving up to 20% energy compared to basic models. Safety is well-covered through thermal cut-off, enclosed heating elements, and an anti-freeze setting that automatically activates at low temperatures, making it safer for indoor use.

Portability is a strong point thanks to its integrated handle and smart wheels, despite its somewhat hefty 23-pound weight, allowing easy movement between rooms. The heater runs quietly without a fan, which is ideal for allergy sufferers since it doesn't stir up dust or pollen. Its design is practical and durable, featuring a corrosion-resistant finish and a compact footprint (6.5" deep by 15.5" wide and 27" tall) that fits well in typical living spaces.

The unit is relatively heavy compared to some portable heaters and might take longer to warm a room initially due to oil-filled technology. While energy-efficient for its type, it won't be as quick or flexible as fan heaters for instant heat. If you want a quiet, steady heat source that’s easy to move and built with safety in mind, this De'Longhi model is a solid choice. However, if you prioritize ultra-lightweight or very rapid heating, you might consider other options.