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

The Dr Infrared Heater Portable Space Heater is a solid choice for heating large rooms. With a heating capacity of 5200 BTUs, it is effective in warming spaces up to 576 square feet. The dual heating system, which combines infrared quartz tubes and PTC, enhances its efficiency, providing up to 60% more heat compared to other heaters. This model operates on a standard 120V electric power source, drawing 12.5 amps and 1500 watts of power.

The Dr. Infrared Heater Portable Space Heater with Humidifier is a powerful option for heating large rooms. With a heating capacity of around 5200 BTU and dual heating systems combining Infrared Quartz tube and PTC, it ensures efficient and consistent warmth. The 1500-watt power makes it suitable for spaces up to 400 sq ft, ideal for living rooms, offices, and bedrooms. The built-in humidifier is a nice bonus, adding moisture to dry winter air, which can enhance comfort during colder months.

The Heat Storm Phoenix HS-1500-PHX Infrared Space Heater is designed to be an energy-efficient heating solution for small to medium-sized rooms. It offers a heating capacity of 5200 BTUs, which is suitable for spaces up to 150 square feet primarily, but it can provide secondary heating for areas up to 750 square feet. This makes it a versatile option for various rooms in the home, although it may not be powerful enough as the sole heat source for very large rooms.