10 Best Oil Filled Space Heater 2025 in the United States

The PELONIS PHO15A2AGW is a 1500W oil-filled space heater designed to provide effective heating for rooms up to 161 square feet. One of its main advantages is its fast heating capability, ensuring that it quickly warms up your space. It includes an adjustable thermostat, allowing you to choose from three heating modes (600W, 900W, 1500W) to help manage energy usage and maintain comfort levels. This makes it relatively energy efficient, especially for those keen on saving on their energy bills during winter months.

Additionally, its whisper-quiet operation is a significant benefit for use in bedrooms, offices, and other quiet spaces as it lacks a noisy fan. Safety is a priority with built-in features like over-heat protection and a tip-over safety switch, which automatically shuts off the heater if it’s knocked over, providing peace of mind. Portability is another strong point, with four heavy-duty universal casters and a front carrying handle making it easy to move the heater from room to room.

On the downside, while it is quite effective, its maximum coverage is somewhat limited to smaller rooms or specific areas within larger rooms. The heater’s form factor is a bit bulky, and at 16.72 pounds, it might not be the most convenient for everyone to handle frequently. Despite these minor drawbacks, the PELONIS PHO15A2AGW is a strong contender for those seeking a quiet, safe, and energy-efficient heating solution for their home or office.

The Dreo Oil Filled Radiator is a solid choice for anyone looking for a reliable indoor heater, especially for larger rooms of up to 250 square feet. With a heating power of 1500 watts, it offers impressive efficiency, boasting a 92.3% heat dispersion thanks to its seven fins. Users will appreciate the quiet operation, making it suitable for bedrooms or offices where noise can be a concern.

Safety is a standout feature with multiple protective measures like overheat protection, tilt safety, and a burn-proof plug, ensuring peace of mind while using it around children or pets. The child lock feature is particularly beneficial for families.

The user-friendly design includes a digital thermostat and eco modes, allowing you to set and maintain your preferred temperature. Its remote control and large LED display make it easy to operate, and the included 24-hour timer adds convenience for pre-heating your space. Moreover, it’s designed for easy movement with wheels and handles, making it portable.

It's important to mention that while the heater is effective in larger rooms, its weight of 17.6 pounds may limit portability for some users, particularly when moving it frequently. Additionally, some users might find the heater a bit bulky at 12.83 inches deep, but it does fit well in most living spaces.

The Dreo Oil Filled Radiator is well-suited for individuals seeking energy efficiency, safety, and quiet operation in their heating solution, but those who prioritize extreme portability might want to consider its weight and size.

The De'Longhi Oil Filled Radiator Heater (EW7707CM) is a solid choice for anyone looking to warm small to medium spaces, such as bedrooms or home offices. With 1500 watts of heating power, it provides effective warmth while being energy efficient. One of its standout features is the ComfortTemp function, which helps maintain an optimal temperature without excessive energy consumption. Furthermore, the heater operates quietly, making it suitable for environments where noise might be a concern.

Safety is a priority with this heater; it includes features like thermal cut-off and an anti-freeze setting that activates when temperatures drop below 41°F (5°C). Its design also minimizes surface temperature, helping to prevent any accidental burns.

Portability is another strong point. The integrated handle and smart snap wheels make it easy to move from room to room, and no installation is required. The durable construction means you won’t have to worry about frequent maintenance, as the oil reservoir is permanently sealed. While it efficiently heats small to medium spaces, its performance may not be as effective in larger areas. Additionally, while the heater does not incorporate a fan, which helps maintain a dust-free environment, it may take longer to heat a room compared to fan-based heaters.