Every year, it feels like winter creeps out just as you’re beginning to enjoy autumn. With the onset of winter comes the likely appearance of frigid temperatures, causing your home or office spaces to become downright chilly. While your HVAC heating system can likely handle the brunt of your heating in these circumstances, it can never cover 100% of your living or workspaces in a blanket of reliable warmth.
That’s where energy efficient space heaters comes into the picture. Space heaters, by their very nature, are designed to act as modular supplements to your HVAC heating system, allowing you to maximize your use of isolated spaces during the frigid winter months.
Rather than search all over the internet for that information, you’ll be able to find everything you need in this concise guide to finding the best deals on the most efficient space heater.
In this guide, you’ll find reviews of this year’s top-performing models as well as helpful insights into the sizing and use of your new space heater.
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In This Article:
Space Heaters Comparison Table
|Product||Details||Where to Buy|
|Power: 1,500 watts|
Heat Control: Thermostat with digital interface
|Power: 1500 watts|
Heat Control: Adjustable digital thermostat
|Check Price on Amazon|
|Power: 1,500 watts|
Heat Control: Temperature-controlled/ adjustable temperature settings
Type: Portable radiator
|Check Price on Amazon|
|Power: 1,500 watts|
Heat Control: Eleven temperature settings
|Check Price on Wayfair|
|Power: 1,500 watts|
Heat Control: High/low with programmable mode
Type: Oscillating convection
|Check Price on Amazon|
BTU’s: 4,000 – 9,000
Heat Control: High/low
|Check Price on Amazon|
|Power: 1,500 watts|
Heat Control: Thermostat with digital interface
Energy Efficient Heater Buying Guide
Any veteran homeowner can vouch for the raw cost of heating a home throughout the coldest portions of winter. Depending on the weather in your area, you could spend hundreds or even thousands of dollars over the course of a single winter simply for the convenience of in-home heated comfort.
Though on a smaller scale, the same goes for space heaters unless they are chosen with energy efficiency in mind.
On the surface, though, it is often difficult to know which popular space heater models are energy efficient and which are…less so. As such, you’ll need to spend some extra time during your comparative shopping process in order to come to a full understanding about what features and specifications effect a unit’s energy efficiency.
The following sections each cover one facet of space heater design and operation that can impact its overall efficiency and cost of operation in turn.
Different models and brands of heaters can use vastly different amounts of power, so be sure to do your research and find one that is energy efficient and suits the needs of your home.
Efficient Space Heater Types
There are many different types of heaters on the market, with each type working best in certain circumstances. We are going to take a look at a lot of these units and let you know how each suits a specific purpose.
These heaters also use different types of fuel, we will also describe some of the pros and cons of each to you. This way, you can make an informed purchasing decision. We also will not be covering fireplaces, as electric space heaters are at least 3 times more efficient than them.
These are the most energy-efficient space heaters available today:
Oil Filled Heaters
Oil-filled heaters are sometimes forgotten about since they resemble the electric radiators of the past. Oil heaters have a completely different heating system than those old electric radiators, making them much more efficient.
You do not need to worry about changing the oil in the machine- it will never need to be drained and replaced. This liquid is designed to get very hot, which makes the radiator warm, heating your room efficiently.
Why are they so efficient?
This is because the liquid in the machine is what is designed to get hot, the metal is warmed by the liquid. Even if you were to turn off the machine, it would continue to radiate heat for a while without using any additional power.
This is why oil-filled heaters are some of the best heaters to use at home. They are suited for heating smaller rooms, but once you feel that the room is warm enough, you can shut them off. They continue to keep the room warm for a long time after they stop using power.
- Amazing efficiency
- Continue to heat the room after being shut down
- Do not need to be refilled
- Easy to move with wheels
- Only suited for small room
Infrared heaters are not used to heat rooms, as they do not offer heat circulation systems to warm the air. They are also referred to as “spot heaters” since they are used to warm up a person or object.
They get their name from how they make heat, which is by sending heat out in rays. The heat will travel from the unit until it meets an object, warming it up. They work best in areas like stores or garages where you want to heat something specific. Many people prefer to keep them out of their bedrooms due to the red light that they emit.
They also do not require additional fuel, as they simply use electricity.
The way they work is by causing constant combustions inside of a coil, sending out those rays. They are very efficient when it comes to using power too.
Infrared heaters waste 20% less power than your traditional space heater. This makes them great for using at work or in the garage when you need to ensure that certain objects are kept warm.
However, they do have a couple of important drawbacks that we should mention. They do not heat the air, so the warmth will diminish as soon as you turn off the infrared heater. Objects can hold onto heat for a little longer, although you will notice that the room’s temperature drops quickly.
- Great for spot heating
- Energy efficient
- Work quickly
- Red light can keep people awake at night
- Do not keep the air warm
These are the most popular space heaters, so you have likely seen them before. They come in a ton of sizes and colors, so you should be able to find a style that matches your room. As for fuel, you just need to ensure that they are plugged into a good outlet to get them running.
They are typically made from 2 main materials- aluminum and ceramic.
Since heat is emitted from the ceramic materials, the process is also very safe, especially for electrical heating. Ceramic is a durable material that has a resistance to electricity and heat, which only builds when a stronger current is run through it. Aluminum can then do its job.
This includes absorbing the heat and transferring it to your room through a fan. This heating system works quite efficiently, as they can be placed to direct the heat to where you want it the most. They heat an area of at least 200 square feet, which can cover a lot of room sizes in many homes as well.
- Good efficiency
- Can be used to direct heat
- Very safe
- Can take a while to heat up
These efficient heaters work quickly, without making a lot of noise. Plus, if dry air bothers you, they do not suck the moisture from the air. They come with plenty of benefits as well.
Convection heaters do not stir up dust, fight mold, and keep your skin from drying out. They attach to your wall and work on heating the room from the top. They heat the room by warming air as it travels over one of their heated coils, then returning it into your room.
One of the downsides is that they are not portable like the other types of space heaters that we talked about. They often weigh about half as much more than the other types. They also do not keep the room warm when they are turned off. So, you want to be sure that the room is at a good and stable temperature before you shut it down.
As for fuel, they simply use electricity from your home to heat their coils. They do not require any other products to be used to keep them running. They also can be used to heat larger rooms, although they might be slower if the room is extremely large.
- Work quickly
- Good efficiency
- Do not make a lot of noise
- Do not steal moisture
- Not portable, only heat one room
- Very heavy
- Heat drops when turned off
Choosing the Correct Heater Size For Your Home
One of the single biggest mistakes many homeowners make when purchasing a space heater is opting for a model that is either too large or too small to fit the demands of their regular use space.
Choosing the correct sized heater not only leads to a comfortable cold season, it also keeps the costs of running it to a minimum.
In order to avoid this future problems, you should always perform pre-purchase calculations that highlight what size space heater is appropriate for your home or office space.
Each of the following steps will help you accomplish this task with efficiency and precision by taking into account everything from the size of your room to your room’s relevant features:
Measuring Your Space
There’s an old saying in crafting circles about “measuring twice and cutting once.”
The same goes for space heater sizing, which is why you should always start by measuring the length and width of your intended use space in square feet.
For example, a 10 foot by 10 foot room would require a space heater with at least 100 square feet of coverage space to ensure optimal comfort.
Calculate Wattage and BTU Needs
After measuring out the room that you intend to use your space heater in, you’ll need to use a special formula to determine the number of watts needed to reliably and efficiently warm that room.
This can be accomplished by multiplying every square foot measured in the previous step by 10 watts. Accordingly, the exempe room from the previous step would require 1,000 watts of power to maintain its peak heating capacity while in use.
Then, you’ll need to take out a calculator and multiply that watt-based sum by 3.41.
This is because approximately one watt of electricity can be converted into 3.41 BTUs (British Thermal Units) of heat. You’ll likely see BTUs listed among each space heater unit’s specifications, allowing you to gauge precisely how much heat it is able to produce when receiving an optimal volume of power.
Evaluating Room Features
Next, you’ll need to take into account major features within your target room.
For example, if there any large pieces of furniture or areas with unusual airflow, you may need to look for a space heater with slightly more capacity than the dimensions of your room would dictate. This is especially the case if you intend to use your space heater in a room where a door is routinely left open, such as in an office or automotive garage.
Also, your room feature evaluation should also take into account the contents of your target room’s walls. Specifically, you should take into account the presence and age of your target room’s insulation.
If your room has old insulation or lacks insulation entirely, you will absolutely need a beefier space heater to make up for the warmth lost to contact-based heat transfer.
Accounting for Safety
Due to their self-contained nature, warm space heaters can potentially represent a safety hazard. This can especially be the case if the unit is left alone or is plugged in to a faulty electrical socket (in the case of an electric model). This can cause unintended burns at least, if not a fire outright due to sparking.
As such, you should choose a space heater with safety features appropriate to both its size and power source.
For example, prospective buyers should look for an auto-shut off mechanism in tall space heaters (especially those used in rooms with pets or children).
Also, overheating prevention modules are a great safety feature that can help waylay the chance of contact burns from a space heater that has been operating for several hours.
Choosing a Correctly-Sized Model
Once all of these factors are accounted for, you’ll be ready to pick out an appropriately-sized space heater that will keep you optimally toasty while also preventing its own unsafe operation.
Many leading brands offer several sizes of their most popular models, making it easier to find an affordable option that meets your individualized functionality requirements.
Keep in mind that larger and more powerful space heaters (especially those relying on convection heat dispersion) tend to operate more loudly. As such, you should also keep an eye out for a quiet space heater that still provides enough heating capacity to match your space’s dimensions and features.
Most Energy Efficient Space Heaters Reviews
If you’ve just begun your digital search for a new energy efficient space heater or have already checked all of your favorite online retailers, then you’ve come to the right place. That’s because this guide contains reviews covering seven of this year’s most popular models.
As such, you’ll be able to easily compare each of these industry-leading models side-by-side based upon their core specifications and features.
Among these reviews, you are certain to find a space heater model that is fully capable of providing warmth to your target room without burning a hole in your wallet.
After reading each of these reviews, you’ll be just a few clicks away from bringing comfort back into your favorite living spaces or office, especially when the bitter cold winds roll back in this winter.
Dr Infrared Heater Portable Space Heater
Before all else, let’s make one thing clear – the Dr Infrared Heater Portable Space Heater might just be one of the safest space heaters on the market today. That’s because this model brings a lot to the table when it comes to built-in protections. For example, this model’s overheat protection is able to keep its internal components from damaging themselves, even after many hours of operating at the far end of its 50° – 86° F temperature range.
Self-preservation isn’t the end of this safety story, though. In fact, this Dr Infrared space heater also comes standard with tip-over protections that ensures an instantaneous shut off if it is upended on accident. Should you or another user leave the room while it is still operating, you can rest assured because this model’s 12 hour automatic shut-off switch will kick in and prevent a dangerous situation from precipitating.
As for the rest of this model’s features, they’re also fairly noteworthy. One prime example is this model’s 1,500 watt advanced heating system that runs at a whisper-soft volume – 39 dB, to be precise. Interestingly enough, this same heat production system is actually made up of two prime components, that is, a PTC and quartz infrared element. Combined together, you can expect this space heater to provide enough heat to cover a 1,000 sq. ft. room (and beyond).
DeLonghi HCX9115 Energy Efficient Panel Heater
At first glance, you might look at the DeLonghi HCX9115 wall mountable electric heater and assume that it’s a low powered personal heater that could do little to warm up a regular-sized room. But that assumption would be faulty, as it turns out, because this panel space heater’s slim form factor hides an impressive heating capacity of around 5,120 BTUs.
What’s more, the DeLonghi HCX9115 provides its users with fully recognizable options when it comes to energy efficiency and cutting utility costs. Specifically, this model’s multiple heat settings and an ECO mode actually modulate the unit’s overall power input between 750 and 1,500 watts. As such, you can still use the DeLonghi HCX9115 if you are looking to reduce your wintertime electricity bills without giving up your in-home comfort.
Traditionally, panel-style space heaters have been relegated to wall-mounted installation only. In that regard, the DeLonghi HCX9115 maintains its class-based standard by allowing for installation on most any interior room wall. However, the DeLonghi HCX9115 is wholly unique in its ability to stand on its own two feet (or four wheels, as the case may be).
In this freestanding orientation, this model can become a bit top-heavy and prone to tipping. But on that front, manufacturers DeLonghi have thought ahead because the HCX9115 comes with built-in internal tip-over kill switch. As such, you won’t need to worry about leaving this space heater out to warm your 300 sq. ft. room, even if your kids or pets are bouncing around it.
The DeLonghi HCX9115 Convection Panel Heater is available from Amazon.
DeLonghi EW7707CB Full Room Radiant Electric Heater
In terms of getting bang for your buck, the DeLonghi EW7707CB provides both in terms of construction and in terms of operational efficiency. This can immediately be seen in this model’s implementation of the newly patented SmartSnap wheels, which come preassembled. All you need to do is slot these wheels into the space heater’s exterior base, which itself does not require the use of any special tools.
Moving over to its core operation, the DeLonghi EW7707CB is fairly impressive for a unit that bills itself as a “maintenance-free system.” However, this high billing has a strong air of truth about it because this radiator-style space heater’s diathermic heat transfer fluid does not ever need to be replaced or refilled. Instead, it is able to function optimally throughout this unit’s lifespan, even if you regularly use it at its 1,500 watt maximum power setting.
Speaking of watts, the DeLonghi EW7707CB is certainly the only model in its class to make use of so-called “watt economization” settings. These settings – which are accessed through a series of user-friendly toggle switches on the unit’s exterior – allow the DeLonghi EW7707CB to seamlessly restrict its own electrical intake when operating below peak demand. These settings along could save you some serious cash on your next wintertime electric bill.
Finally, the EW7707CB’s manufacturer, DeLonghi, is proud to say that this model is one of the first to implement its newly-patented thermal slot architecture. These slots have been optimally spaced to allow for maximal room coverage, regardless of the unit’s position within the room itself.
The DeLonghi EW7707CB Full Room Radiant Heater is available from Amazon.
EdenPURE 2021 Classic Infrared Heater
Let’s take a look at this, one of EdenPURE’s latest offerings in the infrared space heater market. At its core, this model makes use of 1,500 watt internal heat production system that operates without much noise at all.
This system consists of both a quartz infrared bulb and a PTC infrared element meaning that unlike conventional infrared heaters, this unit will heat both the air AND objects in the room.
When it comes to heating, this EdenPURE space heater provides a decent temperature range and the adjustable thermostat provides a large enough temperature range to get the room comfort just the way you like it.
Finally, this heater has all safety features you have come to expect from a high-quality unit. You won’t have to stress about a fire when you stay warm this winter!
Lasko 754200 Ceramic Portable Space Heater
At some point in time, ceramic space heaters began to gain a bad reputation. Some folks say that they tend to dry out the air and aggravate the allergies of users throughout the winter months. But clearly, those folks haven’t used the energy-efficient Lasko 754200 before.
For a personal space heater with an affordable price tag under $40 dollars, you might expect this model to put out a sub-par quality of unreliably warm air. But quite the contrary, the Lasko 754200 can be counted on to engage its 1,500 watt convection heating elements to provide up to 300 sq. ft. of warmth in your bedroom or home office. This model is even compact enough to be placed safely on the countertop of your outdoor workshop or shed.
Speaking of picking up the Lasko 754200, this space heater is a breeze to move from place to place thanks to its top-mounted carry handle. This handle, like the rest of the unit, will be cool enough to touch whenever you need to move it – even after several hours of continuous use at the highest of its 11 adjustable temperature settings.
Also, unlike many other convection space heaters, the Lasko 754200 allows users to control both its fan and its heat settings separately. Moreover, this model makes use of three separate fan settings (high heat, low heat, and fan only), each of which are quitter than comparable fans in other convection space heaters. Using these settings, you’ll be able to disperse this unit’s heat even after shutting it off and unplugging it safely.
The Lasko 754200 Ceramic Portable Space Heater is available from Wayfair.
Lasko Designer Series Ceramic Space Heater
This Lasko Designer Series unit has taken the term “ceramic space heater” and advanced it to the next level. Indeed, while it makes use of ceramic convection components internally, the real attention must be directed to this model’s ceramic exterior. Made from an earth-toned clay, this model’s exterior is designed to blend in with almost any décor due to its artistic aesthetic appeal.
Naturally, though, everyone in the vicinity of this Lasko Designer Series space heater will feel the warming effects of its 1,500 watt heating system. You’ll be able to take full advantage of this model’s 60° F to 85° F temperature output range as well as long as you take a little time to learn how to operate its programmable, color-coded high/low settings.
Interestingly enough, this Lasko Designer Series space heater is even able to spread the warmth around using its built-in oscillation system. With this oscillation system engaged, you can kiss corners goodbye! You won’t even need to get up to kick on this space heater either, as long as you have its compact remote control nearby.
That remote can actually control almost every major function of this space heater, including its timer system. Should you forget to set a timer, though, this Lasko Designer Series space heater will be able to shut itself off and keep its surroundings safe using its overheat protection mechanism.
The Lasko Designer Series Ceramic Space Heater is available from Amazon.
Mr. Heater F232000 Portable Propane Radiant Heater
Like a good pick-up truck, the Mr. Heater F232000 has been built with durability in mind and is one of the best propane heaters. Specifically, you’ll find that this model’s frame has been built with steel, nickel, and high-grade plastics. All of those resilient materials are further supported by shock absorbing insulation within the unit’s case. As such, you’ll be able to take this space heater to a job site or off-site workshop without worrying about it breaking after a single hard impact.
While outdoor use may not be the most efficient use of a space heater, you’ll be glad to know that the Mr. Heater F232000 has been rated for safe and effective use at up to 7,000 ft. of altitude. When used inside, though, this model is nearly 100% efficient when it comes to burning its propane fuel source on either the low (4,000 BTU) or high (9,000 BTU) operational setting.
Finally, the Mr. Heater F232000 deserves some extra commendations for its use of safety features. At a base level, this safety suit includes a tip-over shut-off protection switch internally. But most importantly, this model includes an oxygen depletion sensor (ODS) that enables it to automatically switch as soon as it detects insufficient airflow (which could cause the production of dangerous carbon monoxide).
The Mr. Heater F232000 Portable Propane Radiant Heater is available from Amazon.
Tips for Using Your Space Heater Efficiently
While many modern space heaters are able to regulate their own fuel usage to a degree, you’ll still need to put in some leg work if you’re hoping to use your new unit efficiently. While many of the following tips, recommendations, and considerations are focused on small details, they can make a big impact when it comes to minimizing your space heater’s fuel usage and resulting upkeep cost.
Place Your Heater Strategically
In all rooms, regardless of size or shape, you should place your space heater where it is strategically able to provide the most warmth to its target group. So, if you are making use of a personal space heater, you should place it at safe distance while pointing the unit’s operating end towards you. Alternatively, those using a room heater should place their unit in a corner and allow its operating side to face outwards for maximum coverage.
Also, try to avoid placing your heater near a location with a known draft. Doorways in particular can draw out heat through pressure differentials, causing the user to miss out on their heater’s peak heating capacity.
Restrict Heating Space
Whenever possible, minimize the overall dimensions of the space you intend to heat. This includes sealing up any outlets to the cold exterior, such as a door or window.
This allows your space heater to more efficiently heat the room by minimizing how often in needs to operate at full capacity.
If necessary, you may choose to install temporary insulation (curtains) over windows in order to prevent heat lose in areas such as outdoor workshops or sheds.
Set a Lower Temperature
When you turn on your space heater for the first time, you should always start at the lowest comfortable temperature. Then, as your desired temperature changes (or the outside temperature fluctuates), you’ll be able to moderate how hard your unit needs to work.
This is doubly the case with electric space heaters, which can become expensive to operate if you routinely set them at a higher-than-necessary temperature threshold.
Use the Timer Feature
If your space heater includes a timer feature, make use of it whenever possible. These simple yet productive timers allow you to ignite your space heater and leave it running without worries about it running indefinitely.
In turn, a timer can cut down on the cost of using a space heater, especially when occupants are routinely cycling in and out of the targeted room.
The Final Word
All in all, there’s a lot to take under consideration before you purchase a space heater. Naturally, you’ll want to compare each model’s features and specifications first in order to establish their overall operational efficiency. Then, you’ll need to consider where you intend to use the space heater to further ensure that it can be efficiently and safely placed at that location.
Only then will you be ready to read the reviews for this year’s top-tier space heaters featured in this guide. As long as you apply everything that you’ve learned in this guide, you’re sure to possess the savvy needed to find precisely the right efficient space heater to fit both your needs and your budget.
Pricing last updated on 2021-04-15 at 00:22 / affiliate links - Details