10 Best Energy Efficient Space Heater 2026 in the United States

The Dyson Hot+Cool AM09 is a unique space heater that uses a bladeless design to provide warm air quietly and evenly. It utilizes a radiant heating element combined with forced air, which helps heat a room quickly and efficiently. Users find it suitable for small to medium indoor spaces like bedrooms or home offices. Its energy efficiency is decent for its class; it runs on 120 volts and offers two heat settings, allowing some control over power use. However, it doesn't have an Energy Star rating, which may matter if you’re seeking the most energy-saving option. The heater includes thermostat control to maintain a comfortable temperature without wasting energy.

Safety is a strong point due to its bladeless design, reducing burn risks and making it safer around kids and pets. It also automatically shuts off if tipped over, adding peace of mind. Noise level is generally low, making it good for quiet environments. The unit is relatively lightweight at under 8 pounds and its slim tower shape makes it easy to move and place in different rooms.

On the downside, the price tends to be higher than many basic space heaters, and the heating area might not be enough for larger rooms. Also, while it blends fan and heater functions, some users may find the dual purpose less focused than a dedicated heater. The Dyson AM09 is well-suited for those who want a stylish, safe, and quiet heater for smaller spaces and don’t mind paying a premium for the design and bladeless technology.

The Rinnai EX38DTWN is a natural gas-powered wall-mounted space heater delivering 38,400 BTUs, suitable for heating medium to large rooms up to around 1600 square feet. Its direct vent design and advanced modulating technology provide consistent warmth while efficiently adjusting fuel use to avoid wasting energy. This feature helps keep heating bills lower without sacrificing comfort.

The unit includes a programmable thermostat that can integrate with Wi-Fi systems, allowing easy temperature control tailored to your daily schedule. Safety is a strong point, with a cool-to-touch cabinet and self-diagnostic electronics that help prevent accidents, making it a good choice for homes with children. It operates quietly, which is ideal if you want heat without background noise.

Compact and wall-mounted, the heater saves floor space, although weighing 108 pounds means it’s not something you’d move frequently once installed. Since this heater uses natural gas and requires venting, it’s best suited for homes with existing gas lines and proper ventilation. While installation might be more involved than plug-in electric heaters, the energy savings and heating power make it worthwhile for efficiently heating larger indoor spaces with minimal noise and strong safety features.

The Rinnai EX17DTP is a propane-powered wall furnace designed to efficiently heat spaces up to about 1,600 square feet with 17,000 BTUs, suitable for bedrooms, offices, or small homes. Its advanced modulating technology helps maintain consistent warmth without cold spots, making it energy-efficient by matching heat output to your needs, which can save on fuel costs. The programmable thermostat with smart home compatibility adds convenience, allowing you to set temperatures remotely or on a schedule.

Safety is a strong point here, with a cool-to-the-touch cabinet and self-diagnostics, making it a good option for families. It operates quietly, so you won’t be disturbed by noise. However, being a wall-mounted unit that weighs 67 pounds, it requires professional installation and isn’t portable like some plug-in heaters. Also, it runs on propane, which might need a fuel supply setup if you don’t already have one.

For those seeking a reliable, quiet, and energy-conscious wall heater with smart controls for a fixed indoor space, the Rinnai EX17DTP is a fitting choice. It is less suited for users who need a lightweight or easily movable option.