When winter comes, the space heater is one of the most searched products by many people. With technology development, there are now several types of heaters and models to choose from.
The remaining question is which one is the best space heater for large drafty rooms? If you are looking for a space heater like this, we have a comprehensive guide for you.
Here are the best space heaters for large drafty room you can buy in 2025:
- Best Overall (Electric Heater): PELONIS Oil Filled Radiator Heater
- Energy Efficient (Electric Heater): Dr. Infrared Heater Portable Space Heater
- Best For Families With Kids (Electric Heater): Lasko 755320
- Best For Bedroom (Electric Heater): COSTWAY Oil Filled Radiator Heater
- Best For Living Room (Propane Heater): Mr. Heater Corporation MH18B
- Fuel Efficient (Propane Heater): Mr. Heater Corporation F299730
| 6 Best Space Heaters For Large Drafty Room | ||
|---|---|---|
Best Overall | PELONIS Oil Filled Radiator Heater
| |
Energy Efficient | Dr. Infrared Heater Portable Space Heater
| |
Best For Families With Kids | Lasko 755320
| |
Best For Bedroom | COSTWAY Oil Filled Radiator Heater
| |
Best For Living Room | Mr. Heater Corporation MH18B
| |
Fuel Efficient | Mr. Heater Corporation F299730
| |
Electric Heater
Best Overall (Electric Heater): PELONIS Oil Filled Radiator Heater
- Easily achieve customized warmth - five temperature settings and three heating modes
- Run quietly and distribute heat evenly - The oil radiator
- Convenient to use - four smooth-rolling wheels, a remote control, a 10-hour timer, and an LED display
- Safety - tip-over safety switch and overheat protection
- Not remember its heat setting when the power is lost
In terms of price, functionality, and ease of use, this is our most favorite pick and we feel confident that everyone will also love it.
Despite the competitive price tag, it produces great heat, along with five temperature settings and three heating modes to easily achieve customized warmth. The oil radiator allows it to heat up fast and distribute warmth evenly without making a loud noise.
Particularly, it comes with four smooth-rolling wheels, a remote control, a 10-hour timer, and an LED display, making the design a lot user-friendlier.
You’ll also get peace of mind while using this space heater as it is built with a tip-over safety switch and overheat protection. Besides, it will turn on the light while operating.
| PELONIS Oil Filled Radiator Heater Specifications | |
|---|---|
Dimension | 15.16 x 6.38 x 26.06 inches |
Wattage | 1500Watts |
Temperature Setting | 65F-85F |
Coverage | 164 square feet |
Highlight Features | five temperature settings and three heating modes The oil radiator four smooth-rolling wheels, a remote control, a 10-hour timer, and an LED display tip-over safety switch and overheat protection |
If you’re looking for the best-overall space heater for large drafty rooms, the PELONIS is for you
Energy Efficient (Electric Heater): Dr. Infrared Heater Portable Space Heater
- An efficient and economical little heater - an advanced dual heating system
- Reliable - made in the USA
- Not cause dried skin – a built-in humidifier
- A bit pricey
- Wish it had a bigger, better reservoir
Adopting advanced dual heating systems, including PTC and Infrared Quartz tube, this newly engineered space heater can produce up to 60% more heat than others. Additionally, it always keeps the operation cost at the lowest.
There are two heating modes to choose from, ranging from 50 to 85 degrees. And it also features a 12-hour timer for extra convenience.
Our most favorite feature of this space heater is its integrated humidifier for a cool-mist so your skin won’t bone dry while using it, especially during the winter.
A big bonus is that it’s made in the USA, which ensures the quality.
| Dr. Infrared Heater Portable Space Heater Specifications | |
|---|---|
Dimension | 13 x 12 x 15 inches |
Wattage | 1500-Watt |
Temperature Setting | 50 to 85 degree |
Highlight Features | advanced dual heating system made in the USA a built-in humidifier |
The Dr. Infrared Heater Portable Space Heater is our top-notch option when it comes to energy efficiency
Best For Families With Kids (Electric Heater): Lasko 755320
- Safety enhancement – overheat protection & a cool-touch exterior
- Straightforward to use – two ways to display temperatures & feature oscillation, timer, adjustable thermostat, and remote control
- Easy to assemble
- The carry handle on the back could be more functional
- The remote control needs improvements
With families that have kids, the choice-making process of space heaters should be more thorough. It should be built with more safety features, especially a cool-touch exterior.
Luckily, the Lasko 755320 meets all those requirements!
Plus, it is very overheating protective.
Similar to most other counterparts here, it’s very easy to assemble and use, all thanks to the added oscillation, timer, adjustable thermostat, and remote control. We also do appreciate that it can present temperatures in either Celsius or Fahrenheit.
| Lasko 755320 Specifications | |
|---|---|
Dimension | 7.25 x 8.6 x 23 inches |
Wattage | 1500W |
Coverage | 360 square feet |
Highlight Features | overheat protection & a cool-touch exterior two ways to display temperatures feature oscillation, timer, adjustable thermostat, and remote control |
Designed with enhanced safety, the Lasko 755320 is our best choice for families with kids.
Best For Bedroom (Electric Heater): COSTWAY Oil Filled Radiator Heater
- Not bother your sleep - oil-filled radiator for quiet operation
- Very safe to use – auto-shutoff if tipped over or overheating & a cool-touch shell
- Low-maintenance - the 7 oil-filled thermal slots
- No light to show whenever it’s on
According to its superior safety and quiet operation, we choose the COSTWAY Oil Filled Radiator Heater for large drafty bedrooms.
It will automatically shut off if unexpectedly tipped over or going beyond the desired temperature. You won’t be afraid of being scalded accidentally due to its cool shell.
The best part is its oil-filled radiator that delivers whisper-quiet operation so that it won’t bother your sleep. There are three heating modes as well as an adjustable thermostat to customize your desired temp.
Another bonus is it doesn’t require oil refilling, which is a big thank you to the 7 oil-filled thermal slots.
| COSTWAY Oil Filled Radiator Heater Specifications | |
|---|---|
Dimension | 14 x 10 x 25.5 inches |
Wattage | 600w, 900w, and 1500w |
Highlight Features | oil-filled radiator for quiet operation auto-shutoff if tipped over or overheating & a cool-touch shell the 7 oil-filled thermal slots |
While most space heaters for large drafty rooms run noisily, the COSTWAY Oil Filled Radiator Heater isn’t a thing. That’s why it is best for bedrooms.
Propane Heater
Best For Living Room (Propane Heater): Mr. Heater Corporation MH18B
- Able to heat up 450-square-foot drafty living rooms – produce 18,000 BTU/hour
- Easily customize your preference warmth - three temperature settings
- Extremely safe to use - tip-over protection & ODS
- No included fan assembly or switch
- Not helpful instructions
The Mr. Heater Corporation MH18B can offer up to 18,000 BTU/hour, which means it can heat up a large drafty living room of 450 square feet in area.
With the three temperature settings, you can easily customize your preference warmth.
Besides, rest assured to use it as the unit is tip-over protection as well as features ODS (Automatic low-oxygen shut-off system) for safety.
| Mr. Heater Corporation MH18B Specifications | |
|---|---|
Dimension | 16.7 x 11.2 x 12 inches |
Coverage | 450 sq. ft. |
Highlight Features | produce 18,000 BTU/hour three temperature settings tip-over protection & ODS |
Built to cover an ultra-large space with customizable settings and safety, the Mr. Heater Corporation MH18B is our top pick for living rooms
Fuel Efficient (Propane Heater): Mr. Heater Corporation F299730
- Perfect for extremely large drafty rooms – deliver 30,000 BTU of power output
- High safety level - CSA certified structure & Automatic low oxygen shut-off system
- Energy-efficient - 1.389 pounds/hour of fuel consumption
- Easy to assemble – include wall mounting hardware, legs, and thermostat
- No blower fan
- Expensive
This unit generates great heat output - 30,000 BTU, meaning that it is perfect to warm up a large drafty room sizing up to 750 square feet.
But the real star about this space heater is its fuel consumption, which is only 1.389 pounds/hour plus its design is CSA certified. In other words, it is absolutely a safe and energy-efficient option for frequent users.
We do appreciate that it includes wall mounting hardware, legs, and thermostat in the package, which is a lot easier to assemble.
| Mr. Heater Corporation F299730 Specifications | |
|---|---|
Dimension | 23.75 x 11.25 x 27 inches |
Coverage | 750 square feet. |
Highlight Features | deliver 30,000 BTU of power output CSA certified structure & Automatic low oxygen shut-off system 1.389 pounds/hour of fuel consumption include wall mounting hardware, legs, and thermostat |
According to its unique design, the Mr. Heater Corporation F299730 takes the top spot in terms of energy efficiency.
How To Choose The Best Space Heater For Large Drafty Room?
Types
First of all, you will need to pick a type of space heater, there are a few options for you to choose from:
- Radiant heater: this type runs on electricity, gas, or fuel to produce heat. Most heaters of this type are infrared models and they warm the room instead of heating it up. These heaters are often pointed in a certain direction.
- Convection heater: this type creates hot rising air that will heat the entire room.
- Combination heater: this type combines the two types above. As a result, it can heat an entire room or a specific direction.
For a drafty room, there are four main types of heater: freestanding heater, electric fireplace heater, baseboard heater, and wall heater.
Installation type
If divided by installation, there will be only two types of heater. The first one is permanently mounted in the room and the second one is portable. If you want your heater fixed at one sport in a room, you can go with the permanent type.
When you use a portable heater, it’s worth noting that it may stumble if your kids or pets run around the house and bump into the appliance.
Size and Power
The size of a space heater determines how much space it will take up in your room and a larger size often means more power as well. With that in mind, when choosing a size, you need to remember and consider the size of the room where it will be used.
To help you choose better, remember that a 10W heater can heat 1 square foot of space. So, if your room is 7 square feet, you will need a 50-100W heater.
Safety
This is among the most important factors you must take into account when choosing a space heater. Remember to check for the safety test labels. You should also pay attention to other safety features like a cool-touch exterior or the automatic switch-off feature.
Which Brands Make The Best Space Heater For Large Drafty Room?
Lasko
With 100 years of experience in the industry, this brand focuses on innovation to deliver the best products to users. It aims at making lives more comfortable and healthier.
PELONIS
Over the past 25 years, this brand has been a pioneer in heating technology. Its products carry the highest safety and quality standard in the industry.
COSTWAY
Founded in 2009, this is now a top retailer of high-quality products. Not just that, you will find affordable appliances here as well.
Dr Infrared
This is one of the leading brands in infrared heating tech. It offers efficient heaters that will warm up your room quickly.
FAQs
How big of a room can a space heater heat?
The answer to this question depends on the size of the heater and the space you need to heat up. For example, a 10W heater can warm 1 square foot, so another room with 5 square feet of area will need 5x10 watts, which equals 50 watts.
Can you run a space heater all night?
Yes, you can. But you have to make sure it has one of the following features: tip-over protection, automatic shutoff, and a timer.
Do infrared heaters use a lot of electricity?
It uses less energy and can be cheaper to run if used in a smaller room for a short period of time.
How to use a space heater efficiently?
You should always close the room door. Also, turn down the central heating to avoid overheating the room. Switch it off when you don't need it and set the timer if you leave it unnoticed.
Are propane heaters safe to use indoors?
You can safely use a propane heater indoors if you follow precautions. You should install a carbon monoxide detector at the heater’s location. And do not leave the heater unattended.
Conclusion
We hope that through this post, you will find it much easier to find the best space heater for large drafty rooms to use at home. The choosing process is not that tricky as long as you stick to our guide and keep your needs in mind.
