4 Best Delonghi Oil Heaters 2025 in the United States

The De'Longhi Dragon Digital Oil Filled Radiator Heater is a solid choice for anyone seeking an efficient and quiet heating solution for small to medium indoor spaces. With a powerful 1500W heating capacity, it offers quick and effective warmth, making it suitable for bedrooms, home offices, and studies. One of its standout features is the digital control panel with a 24-hour programmable timer, allowing users to easily customize their heating schedule, which is a great energy-saving feature. The ECO Plus function also optimizes energy consumption, further enhancing its efficiency.

In terms of design, the heater boasts a unique structure that provides 75% more radiant surface area compared to previous models, enhancing its heat distribution. Additionally, with no fan involved, it minimizes the movement of dust and allergens, creating a more comfortable breathing environment for allergy sufferers.

Portability is another strong suit; the integrated handles and Smart Snap wheels allow for easy relocation throughout your home without installation hassle. It’s built with safety in mind, featuring a thermal cut-off and an anti-freeze setting that activates when temperatures drop too low. However, the unit is relatively heavy at 26.6 pounds, which may impact mobility for some users, despite its ergonomic design. While the heater is designed for quiet operation, there may still be some noise when it heats up, which could be an issue in very quiet environments. Its coverage is limited to small to medium spaces, so it may not effectively heat larger rooms.

The De'Longhi Oil Filled Radiator Heater (model EW7707CB) is a solid choice for heating small to medium indoor spaces like bedrooms or home offices. With a heating power of 1500 watts, it provides steady and quiet warmth without the blowing noise of fan heaters, which is great if you prefer a calm environment or have allergies since it doesn't stir up dust. It features a simple control panel with a thermostat that can maintain your preferred temperature efficiently, using the ComfortTemp function to adjust power automatically and help save energy.

Although it doesn't include a timer function, it does have safety features like thermal cut-off, an enclosed heating element, and an anti-freeze setting that turns the heater on if the room gets too cold. Portability is a plus here — the heater has a comfortable handle and smart wheels, making it easy to move around your home without hassle. The oil inside is sealed and never needs refilling, so maintenance is minimal, and the steel body is corrosion-resistant for durability.

One drawback is that it offers only one heat setting and lacks a timer, which some users might miss for more control. At about 23 pounds, it's not the lightest heater but still manageable thanks to the wheels and handle. This model provides a quiet, energy-saving heating solution with useful safety features, ideal for those seeking a reliable and low-maintenance option to heat individual rooms without complicated controls.

The DeLonghi Radia S Oil-Filled Radiator Space Heater is a powerful and quiet heating solution designed for small to medium-sized rooms. With 1500 watts of heating power, it provides consistent warmth without the noise of a fan, making it ideal for maintaining a peaceful environment. The adjustable thermostat and three heat settings allow for customization based on your comfort needs, while the ECO function helps save energy by optimizing the heat and power settings.

The digital control panel with an LED display and a 24-hour timer adds convenience, making it easy to operate and schedule heating times. Safety features such as a child lock, thermal cut-off function, and anti-freeze setting provide added peace of mind, particularly for households with children or in colder climates. The radiator's patented smart-snap wheels enhance its portability, allowing you to move it effortlessly between rooms without assembly hassle.

Additionally, the permanently sealed oil reservoir ensures long-lasting operation with no need for refilling. The heater performs well in terms of quiet operation and energy efficiency, although its form factor might be slightly bulky for smaller spaces. For those needing a reliable, safe, and user-friendly heater for medium to large rooms, the DeLonghi Radia S is a strong contender.