6 Best Heater for 500 Square Feet And 1000 Square Feet Heater

If you want to heat a relatively large room, it’s important to look for economical options, like the best heater for 500 square feet. Portable electric heaters will not only help you save energy but also add targeted warmth to single rooms, especially those you use the most during winter.

However, it’s also vital that you choose a heater that is designed to heat a specific room size. Going too large or too small will result in energy wastage and under-heating. The lifespan of the unit is also shortened simply because it’s overworking.

So, if you want to heat a room approximately 500 square feet, then we have compiled a list of the best space heaters for 500 square feet. Some of these space heaters are powerful enough and ideal for rooms up to 1000 square feet. So, we definitely included other 1000 square feet heaters.

6 Best Heater for 500 Square Feet (Space Heater 1000 Square Feet): Reviewed!

Last update on 2020-10-25 / Affiliate links / Images from Amazon Product Advertising API

1. Heat Storm Wall Gray HS-1000-WX Deluxe 1000-Watt Infrared Heater

The world’s first infrared wall heater, the HS-1000-WX is a member of the Heat Storm brand of home heating and cooling products. The heaters are developed by the Utah-based Energy Wise. As with other infrared heaters, the wall heater generates instant heat. However, the HS-1000-WX incorporates an innovative HMS dual-wall technology that ensures far superior energy efficiency compared to its peers.

Other features of the HS-1000-WX include a safe-to-touch grill and space-saving wall-mount design so you don’t lose valuable floor space. The heater only takes up two square feet of wall space and plugs into a standard 110-volt outlet. It also comes with an inbuilt thermostat with LED light indicators and remote control.

The 3,400 BTU heater is Wi-Fi smart and ETL Certified for safety and has a one-year manufacturer warranty.


  • Patented energy-efficient HMS heating technology
  • Several safety features
  • ETL Listed
  • Remote controlled
  • Wi-Fi smart


  • The 500- square feet rating is for supplemental heating


2. NewAir G73 Hardwired Electric Garage Heater

Another moderately-priced heater with all the bells and whistles, the New Air G73 is a popular garage heater with over 17,000 BTU heating capacity. It effortlessly warms a 500-square-feet space, and can be used for even larger spaces.

The in-built, single pole thermostat helps with easy and accurate temperature control in your work area. The G73 is also very safe as its automatic temperature control switch shuts the heater off if it begins to overheat. You also don’t have to worry about toxic fumes from gas or propane fuel.

The G73 can be mounted on the wall or ceiling and comes with a swivel bracket. It moves heat at 200 CFM (Cubic Feet per Minute) and is made from durable stainless steel. The 120V/30 Amp heater is ETL certified.


  • Built-in thermostat
  • Hardwired to eliminate maintenance problems
  • Durable stainless steel construction
  • UL Certified


  • Professional installation required


3. Dr. Infrared Heater 1500-Watt Portable Space Heater

The Dr. Infrared 1500-watt heater is one of the most talked about heaters and for a good reason. This radiant heater heats up fast, gives off plenty of heat, and is extremely energy efficient. Not many 1500-watt heaters can comfortably warm a 500-square-foot space, for instance. Yet, the Dr. Infrared heater does so without any signs of strain.

The heater has a dual heating system featuring an infrared quartz tube + PTC for consistent production of gentle heat. The heat is quietly and evenly distributed throughout the intended space. The unit’s safety features include an automatic shutoff timer and cool-to-touch exterior.

The 110V/12.5Amp Dr. Infrared weighs 24 lbs and comes with a 72-inch long cable. It plugs into a 3-prong outlet.


  • Anti-tip-over and overheat protection
  • Dual heating system
  • Uses standard 110V 3-prong outlet
  • Super quiet operation at 39 decibels


  • Manual temperature setting
  • No remote control


4. Duraflame 9HM9126-0142 Infrared Quartz Heater

The 5,200 BTU Duraflame 9HM9126-0142 is another option to consider when shopping for a heater for a 500 square feet space. The 9HM9126-0142 produces heat that warms you instantly. What’s better, infrared heat is gentle and healthier for you compared to other forms of heat. It also maintains natural humidity rather than drying the air out.

The 9HM9126-0142 features what is known as Safer Plug technology to keep you and your family safe. Safer Plug monitors plug temperature with a built-in thermometer and causes the plug to immediately shut off if it overheats. Not only that, the heater comes with an adjustable thermostat and an electronic timer function.

The 28-pound 9HM9126-0142 comes fully pre-assembled and ready to heat. It can be used for spaces up to 1,000 square feet.


  • Remote control
  • Concealed casters
  • Adjustable thermostat
  • Electronic timer


  • Consumes a fair bit of power


5. Lifesmart 6-Element Large Room Infrared Heater w/Remote

For clean, energy efficient heating, you can never go wrong with a Lifesmart heater. Lifesmart’s heaters have a varying number of heating elements. This specific model has six quartz elements, thus the “6-element” phrase in the name. All the heating elements are packaged into one unit and tucked deep inside the heater for maximum user safety.

The Lifesmart 6-element heater comes with lifetime washable air filters and three energy-saving heat settings. One of the settings, Eco, heats smaller spaces at 18-degrees using just 500 watts. The cool-to-touch metal cabinet and overheat protection ensure safety while a large remote makes it easy to control the digital thermostat.

The 21-pound Lifesmart has a dual timer function and is equipped with E Z Glide casters for effortless movement from room to room. It has a one-year warranty.


  • Digital controls with remote
  • Smart Eco Mode
  • Stylish metal cabinet
  • Adjustable thermostat


  • Settings aren’t memorized


6. The Cadet Com-Pak Twin 4000W, 240V Electric Wall Heater

Finally,the Cadet Com-Pak is a fast-heating coil element wall heater designed for spaces around 200 square feet but capable of handling rooms up to 500 square feet large. For the heater to work as desired in a 500-square-feet room, though, the area has to be properly insulated. Also, the Cadet Com-Pak should be used as a supplemental heat source rather than the primary source of heat.

This wall heater is quite efficient because it blows warm air throughout the intended space in seconds without producing any loud and annoying sounds. Whenever the unit becomes too hot, an overheat switch automatically turns off the heating for safety reasons. The Cadet is the lightest product on this list, weighing just seven pounds. The 1500-watt heater features a compact design that recess mounts discreetly into the wall.

Your package will come with the complete set of installation materials. These include the heater, a wall can, a grill, and a thermostat for hard-wired installation. It plugs into the standard 120-volt outlet.


  • Fast heating coil element
  • Quiet and energy-efficient
  • Multiple safety features
  • Multiple installation options


  • No remote control
  • Better in spaces smaller than 500 square feet


Best Heater for 500 Square feet Buying Guide

Ideally, you should consider hiring a home heating professional to perform the load calculations to determine the right heater size for your room. The professional would factor in things like climate data, the home’s layout and construction type, windows and doors, and the home’s insulation levels to figure out the right heater size for the application.

However, that doesn’t mean you can’t estimate the heating requirements yourself. The following tips and considerations should help you figure out what size you need.

Read our latest guide about the best direct vent propane heater

Start By Looking at Professional Sizing Charts and Calculators

Take a moment to check different websites with home heating charts. There, you’ll find estimated heating requirements for different room sizes. According to the majority of these charts, for a 500 square-feet space, you’ll need about 4,000 watts.

After checking the charts, you may also want to try out home heating BTU calculators. These calculators allow you to input not just the size of the space but also other details such as the number of passages (doors) and windows in the room, insulation, and height of the space. You’ll also be asked whether you intend to use the heater as the primary or secondary heat source. In the end, you get a value much closer to what you actually need.

Do the Math Manually

In addition to using home heating charts and calculators, it would also be great to do the math manually. Don’t worry; it’s a simple process. Proceed as follows;

Measure the room: Is the room really 500 square feet? The only way to find out is to measure. Measure the length and width and multiply the two values. Most 500 square feet rooms measure 25 x 20-feet.

Calculate the wattage: The rule of thumb is to allocate 10 watts for every square foot. Take the figure from step #1 above and multiply by 10. A 500 square feet. room would, therefore, require 5,000 watts.

Convert the Watts to BTU: In many heaters, the power rating is given in BTU. So, the next step is to convert the wattage value in step #2 above into BTU. As earlier mentioned, one (1) watt = 3.41 BTU, meaning 5,000 watts is equivalent to 17,050 BTU. So, you should be shopping in the 17,000 BTU range

How to Pick the Right Wattage to Heat Your Room

Home heating charts, calculators, and even manual calculators will likely give you a value in the 4,000 to 5,000-watt range when shopping for a 500-square-feet room heater. However, to pick the perfect wattage, several factors come to play. These include;

1. Insulation

Heavily insulated rooms require less heating power. Indeed, whereas a standard room with standard insulation requires 10 watts per square foot, rooms with double the recommended R-Value (thermal resistance) require only 7.5 watts per square foot. Rooms with half the recommended R-Value, meanwhile, require 12 watts per square foot.

2. Ceiling height

Most formulas used to calculate home heating requirements assume a standard ceiling height of eight (8) feet. So, what happens if your ceiling is lower or higher? Experts recommend adjusting the wattage requirements by 25% for every two-foot increase or decrease in the ceiling height as necessary. If you’ve determined that your 500-square-feet room requires 5,000 watts, for instance, but then realize that your ceiling is 10-feet high, you’d need to adjust the heating requirements as follows; 5,000 x 125% = 6250 watts. So, you’ll need a 6,250-watt heater.

3. Windows

Windows are one of the primary avenues for heat loss in the home. Although they only make up 8% of a typical home, they are responsible for 25% of heat loss. Heat is lost not just through the glass but also via cracks and gaps in the weather stripping around the frame. The problem gets worse if you’re using infrared radiators. While walls and furniture absorb infrared radiation, glass lets it pass straight through. There are only two ways to compensate for the lost heat – lower the U-value of your windows or increase the wattage of the heater.

4. Temperatures outside the house

Homes in extremely cold areas (where temperatures regularly drop below 20⁰C) lose heat pretty fast. If you live in these areas, it’s recommended that you increase your wattage per square foot from 10 to 15.

5. Are you buying for supplemental heating?

If you intend to use the heater as a supplemental rather than the sole/primary heat source, use the formula to determine the required size of the heater;

Room volume x Desired Temperature Rise x 0.24 = Required Heating BTU.

The Room Volume is calculated as Length x Width x Height of the room.

The 0.24 constant, meanwhile, is the amount of heat in BTU required to raise the temperature of a cubic foot of air by one degree Fahrenheit.

The Desired Temperature Rise is in Fahrenheit.

Wrap Up

It takes a lot of technical details and a bit of experience to precisely determine the size of heater required to effectively warm any space. If you’re in a hurry, it would be best to let a home heating professional help with the matter. If you have time, though, follow the above process diligently. Check online home heating charts and calculators, do the manual calculation, and then adjust the final value to reflect factors such as windows insulation, ceiling height, and external temperatures.