The best space heater overall is the Dreo Solaris Slim H3. Priced around $75, it stands out for its ultra-slim tower design, fast PTC ceramic heating, and extremely quiet operation (around 37 dB). It also features robust safety protections, including a sensitive tip-over sensor and overheat shutoff.
All electric space heaters are technically 100% efficient at converting electricity into heat, but infrared (radiant) heaters are the most efficient for targeted "spot" heating. They warm people and objects directly rather than the air, meaning you waste zero energy heating empty space or drafty air.
Most indoor heaters tend to dry out the air, lowering indoor humidity levels. Dry air can cause irritation to the respiratory tract, leading to symptoms like dry throat, cough, and nasal congestion. For individuals with chronic respiratory diseases like asthma or COPD, low humidity can exacerbate symptoms.
Consumer Reports tests space heaters primarily on room heating ability, spot heating, and strict fire and safety criteria, such as overheat protection and tipping tests. Highly rated models often cost around $75 to $100 and feature auto-climate control and tip-over shut-offs.
The "best" heater company depends on what kind of heater you are looking for. Leading brands consistently top lab tests for space and portable heating based on performance, safety features, and value.
The best room heater depends on your space and heating needs. The Dreo Solaris Slim H3 is the best overall for fast, quiet heating. For energy efficiency, the Envi Smart Wall Heater is top-tier. If you want budget-friendly performance, the Amazon Basics Ceramic Heater is ideal.
The safest space heaters for your home feature automatic tip-over shut-offs, overheat protection, and cool-to-the-touch exteriors. The best overall options are oil-filled radiators (which stay warm without glowing elements), and smart ceramic heaters with V0 flame-retardant materials.
Infrared heaters provide direct, targeted warmth to people and objects using radiant heat (similar to sunlight), making them highly efficient for drafty spaces or personal use. Ceramic heaters use convection, heating the air and circulating it around the room with a fan, which is better for warming an entire enclosed space.
When choosing a space heater, prioritize robust safety features like tip-over protection and overheat shutoff, ensure the wattage is appropriate for your room's square footage, and look for a built-in thermostat. These core features will save energy and prevent fire hazards.
For individuals with COPD, temperatures below freezing (32°F / 0°C) are considered too cold and can trigger severe flare-ups, chest tightness, and shortness of breath. Even temperatures dropping below 40°F (4.4°C) can cause the dry, chilled air to irritate overly sensitive airways.
Oil Room Heaters
Oil room heaters, including the premium varieties by Orpat, are one of the safest options that can be chosen for good health. Oil serves as a medium to hold and distribute heat evenly across the room. Health Benefits: In contrast to other heaters, oil heaters do not dry out the air.
It takes time for your home to warm up and cool down. If you're not sure how long it takes, try turning the heating on about 30 minutes before you need it. You should turn it off 30 minutes before you'll stop needing it.
If you are avoiding traditional space heaters due to fire or burn risks, the safest alternatives are oil-filled radiant heaters or personal heating devices like heated blankets and electric throws. These options produce no open flames, have no exposed glowing elements, and many stay cool to the touch.
Aire Serv experts explain how to choose the right heater for your home.
The most electricity-efficient space heaters are PTC Ceramic Heaters with ECO modes or Radiant/Infrared Heaters. Instead of using constant high-wattage, these units self-regulate their power draw and warm the immediate space rather than heating empty air.
Infrared heaters directly warm objects and people in a "line-of-sight" manner. While highly efficient for targeted heating, their main drawbacks include a lack of retained warmth once turned off, vulnerability to blocking by furniture, and ineffective heating in uninsulated spaces.
6 Important Things to Consider Before Buying a Room Heater
Even those open to alternatives may hesitate because infrared doesn't work like conventional systems. Infrared heat is quieter, cleaner, and often invisible. But because it doesn't “blow warm air” or make radiator noises, some people assume it's not working. There's also the issue of cost comparisons.
The Best Space Heaters
Are infrared heaters safer than ceramic heaters? Yes. Infrared heaters have no exposed heating elements or fans, reducing fire hazards. Also, since they don't circulate air, they don't circulate allergens.
The safest heaters to leave on overnight are permanently installed electric baseboard heaters or portable oil-filled radiant heaters. Because the heating element is fully enclosed and submerged in oil, these models do not get red-hot, lack exposed coils, and are much less likely to ignite nearby bedding or curtains.
In most homes, Heating and Cooling (HVAC) systems drive the highest energy costs, accounting for nearly 40% to 50% of your total electricity bill. Following these, the appliances that run up your bill the most include water heaters, refrigerators, and laundry machines.
Generally, a 1500-watt heater can effectively heat a well-insulated room of about 150 square feet (approximately 14 square meters) in moderate climates. For larger spaces or colder climates, additional heating sources or a higher wattage heater may be necessary.
If your home uses electricity for central heating, the cost is likely still cheaper than running space heaters. According to Scerbo, “Buying a space heater for every room would increase the electricity bill more than if you had just bumped up the thermostat.”