Comparison: Best Space Heater Cooler (Updated | Dec 16th)

A space heater is designed solely to provide warmth, while a space cooler is designed to lower the temperature. Some models are combination units that can both heat and cool, offering year-round climate control in a single device. Choosing between them depends on whether you need to combat the cold, the heat, or both.

The most important factor is the unit’s wattage or BTU output relative to your room’s square footage. A general rule for heaters is about 10 watts of heating power per square foot, while coolers will specify their coverage area in square feet. An undersized unit will run constantly without achieving the desired temperature, while an oversized one can waste energy.

For safety, prioritize heaters with tip-over protection, which automatically shuts the unit off if it’s knocked over. Overheat protection is another critical feature that prevents the unit from becoming dangerously hot. Look for models with cool-touch exteriors and certifications from safety testing organizations like UL or ETL.

Ceramic heaters are often considered safer and more energy-efficient than older coil-based models because they warm up quickly and have a lower risk of fire. Infrared heaters excel at heating objects and people directly rather than the air, making them ideal for spot heating. Oil-filled radiators provide a steady, long-lasting heat but are slower to warm up.

An evaporative cooler uses water to cool and humidify the air, making it most effective in dry, arid climates. An air conditioner uses refrigerant to dehumidify and cool the air, making it effective in any climate but typically more expensive and energy-intensive. Evaporative coolers require ventilation and add moisture to the air, which can be uncomfortable in humid environments.

The impact depends on the unit’s wattage, how long you run it, and your local electricity rates. Heaters are generally more power-hungry than coolers; a 1500-watt heater can significantly increase your bill if used for many hours a day. To save money, look for energy-efficient models with features like programmable timers and thermostats to manage runtime.

The best value comes from a combination of effective performance, energy efficiency, and useful features. Look for a programmable thermostat, multiple heat or fan settings, and a remote control for convenience. A solid warranty from a reputable brand ensures your investment is protected against defects.

Noise level varies significantly between models and is an important factor for bedrooms or offices. Heaters with fan-forced heat will be louder than silent radiant or oil-filled models. For coolers, the fan speed is the primary source of noise, so check the decibel (dB) rating and look for models with a ‘sleep’ or ‘quiet’ mode.