10 Best Space Heaters For Large Rooms 2025 in the United States

The Dr. Infrared Heater DR998 is a strong choice if you need to heat a large room efficiently. It offers 1500W of power with a dual heating system combining infrared quartz tubes and ceramic elements, which helps warm spaces thoroughly and quickly. Its oscillation feature spreads heat evenly across the room, while the electronic thermostat allows you to set temperatures between 50 and 85 degrees Fahrenheit for personalized comfort. A unique plus is the built-in humidifier, which adds moisture to dry winter air, preventing the common dryness associated with heaters.

Safety is well covered with tip-over and overheat protection, and the exterior stays cool to the touch, making it safer around children and pets. It’s also portable enough to move between rooms thanks to its manageable size and weight, though at nearly 25 pounds it’s not the lightest option available. Noise levels are generally low, especially compared to traditional heaters, partly because of the quiet infrared technology.

Energy efficiency is decent for a 1500W electric heater, but like most powerful heaters, it can raise electricity costs if used extensively. The remote control and timer add convenience, allowing easy adjustments without getting up. The humidifier function may require occasional refilling and maintenance, and while the heater works well indoors, it’s not designed for outdoor use. Given its features and positive customer feedback, this model fits well for users who want a versatile, safe, and effective heater for large indoor spaces such as living rooms or home offices.

The Dreo Space Heater is a strong contender for heating large rooms up to about 200 square feet, thanks to its 1500W PTC ceramic heating system combined with a heat funnel design that spreads warmth quickly and efficiently. It offers adjustable temperature control from 41°F to 95°F with fine 1-degree increments, allowing you to maintain a comfortable environment without wasting energy. Safety is a clear focus here, with features like a tilt-detection sensor to prevent tip-overs, overheat protection, flame-resistant materials, and a safety-certified plug, making it a great choice for homes with kids or pets. Noise levels are impressively low at just 34 decibels, which is quieter than a typical conversation, so it won’t disturb you while sleeping or working.

Portability is also convenient with a built-in handle and a compact tower design, allowing you to move it easily between rooms. The heater includes several useful modes such as Power Heat, ECO, and Fan Only, plus a remote control, 12-hour timer, mute function, and child lock, which add to the ease of use and customization. On the downside, its effective heating area is about 200 sq.ft, so it may not be the best option for very large spaces or open-plan rooms. Also, while it is energy efficient relative to similar electric heaters, electric power consumption is inherently higher than gas or oil-based heaters, so expect moderate electricity use.

This heater is well suited for bedrooms, offices, or living rooms where quiet, steady, and safe heat is desired without complex setup.

The Dyson Hot+Cool™ AM09 Jet Focus is a versatile space heater and fan, offering both heating and cooling capabilities, making it suitable for use year-round. With ceramic plates that heat up quickly, it can provide fast and efficient warmth in colder weather. The Jet Focus control allows users to switch between focused and diffused airflow, catering to both personal and whole-room heating needs. Additionally, it can deliver either a direct cooling effect or a gentle breeze during hot weather, enhancing its functionality. The smooth oscillation feature helps distribute airflow evenly throughout the room, ensuring comprehensive coverage.

Safety is a priority with the Dyson AM09, as it includes features like an automatic shut-off if tipped over and no exposed heating elements, reducing the risk of burns. The heater also comes with a convenient remote control that is magnetized for easy storage on the unit itself. Energy efficiency is another strong point, with the ability to program the sleep timer to turn off after preset intervals, potentially saving on electricity costs. At 5.91 pounds, it is relatively lightweight and portable, making it easy to move between rooms as needed.

However, there are some drawbacks to consider. The AM09 operates at a noise level that some users may find distracting, especially when used in quiet environments like bedrooms. Additionally, while it is effective for heating and cooling, its performance in extremely large rooms might be less impressive compared to more powerful, dedicated space heaters. The price point may also be a consideration, as Dyson products tend to be on the higher end of the market. The Dyson Hot+Cool™ AM09 Jet Focus is a feature-rich, dual-purpose space heater and fan that excels in safety and versatility, though it may not be the best choice for very large spaces or for users particularly sensitive to noise.