Last Updated on May 6, 2022 by woodcutter
Winter is coming, literally- and you need to be equipped with the best propane heater for house use. Think about your shivering children, hiding pets and coughing guests. Of course, you want to make sure that everyone in your home is safe, comfortable and active in your home. And, it all starts with ensuring the place is well heated.
Best Propane Heater for House Review
So, which are the best propane heaters for your house? We have scoured the internet stores for the appliances that could keep you warm during the winter. We know it’s hard to live in a freezing house, but; we also understand how tough it is to choose the right heater.
And, while the market has hundreds of units, not all heaters are good for you. That’s why we’re specific about helping you find the best heaters for your garage, cabin, camping, modern house or study room. So, check out our review below and pick one propane heater that suits your needs now!
If you want to get a heater that has got high BTU value, then you may want to try the Dyna-Glo Delux RMC fa-125-dgd.
When you’re looking for a propane heater, one of the most important things you must find out is its BTU value. This is what tells you whether you’re going to experience high heat settings. This heater comes with a BTU value of 70000 up to 125000 BTU. The good thing is that you can always change the settings to your preferred amount of heat.
This propane heater runs on Liquid propane and has a 10-horse with a regulator and electrical ignition. This means that you do not have to use the manual lighter. Therefore, you are safe enough. The long pipe allows you to separate the liquid propane Reservoir with the banner which also adds up to the safety.
Apart from getting a one-year warranty, the manufacturers ensure that you get a powerful heating device to stop this heater comes with a powerful blower that ensures all heat is distributed around your house.
The cylinder weighs 40 lbs and is therefore easy to carry it alone. This makes one of the best propane heaters for camping because it’s portable. You may also want to appreciate that you have to buy the cylinder separately.
In case your heater becomes too hot or falls off the auto start feature comes to play. Therefore you not have to fear that overheating will cause any busting or discomfort in the rules. Immediately the sensor realises there’s too much heat it will shut off to protect the heater and also to make sure that you’re comfortable in your house.
- Dyna-Glo Delux Forced Air Heater
- Variable Heat Settings: 70,000-125,000 BTU
- Heats up to 3,100 sq. ft.
- Fuel Type: Liquid Propane Gas
- Ignition Type: Continuous Electronic Ignition
- With a low pressure of 0.5 PSI, this heater is safe and reliable. Comes with variable settings for heatwave between 70000 and 175000 BTU
- The Dyna-Glo has a strong bracket onto which the motor is mounted.
- This makes the lower shell secure but also guarantees durability and Performance.
- It only takes about 3 minutes to Mount the regulator and starts using the heater fully.
- The heater is safe to use, especially because he has an integrated sensor that shuts off automatically when overheated.
- You need to ensure your house is to buy a ventilated before you use the powerful propane heater.
If you’re looking for a medium power first air-liquid propane heater, then you might like Mr Heater mh60qfav. Of course, you may want to warm up yourself in your pet you back to garage or at the construction. And it is in this case that the heater with a BTU of 30000 to 60000 will be good for you.
Basically, Mr Heater burns liquid propane and then blows it in the entire room. Therefore, you need to make sure that your house needs such kind of heating mechanism. And if that’s not a problem, then you can go ahead to purchase this heater that comes with a 115-volt outlet and 20lb propane bottle.
The horse pipe is long enough, and the regulator connects to the propane bottle which comes with the heater.
This heater is built to endure and last for long. The construction allows it to withstand heat pressure and impact.
The 13.01 lb heater measures 16 inches by 8.3 inches by 13.5 inches which means you can encourage to your backyard Gathering all to your tent during camp meetings.
The QBT technology allows Mr heater to be 50% quieter than the average propane heater to stop you need to understand that forced air heaters normally make some noise because of the movement of air from the heater into the room. Minimizing this noise should be a priority.
It’s not all the time that you will require 30000 or 60000 BTU heat output which means that sometimes you may want to regulate the Heat. And the good news is that Mr heater comes with variable settings that allow you to set to the most comfortable domination. Then even if you might be worried about the output you need to realize that the fuel bottle will run up to 14 hours when it’s full on the low setting, and, this covers up to 1500 square foot on continuous ignition.
- QBT Technology - 50% Quieter than a standard propane heater
- 60,000 BTU Propane Forced-air Heater"
- Variable 30,000-60,000 BTU Output (Runs Up To 14 hrs on 20 lb. tank (low setting))
- Heats Up To 1,500 Sq.Ft.
- Continuous ignition
- It’s easy to ignite.
- Uses the standard 115-volt electric supply
- It’s small and portable.
- Although it has a small size, it heats a large area.
- It uses a standard 20 lb propane bottles.
- You may want to buy a propane bottle separately.
- Some Mr Heater unit doesn’t come with the regulator and gas hose.
Finding the best propane heater means that you must also consider the manufacturer. Although there are hundreds of brands in the market today, you need to buy from a manufacturer you can trust. The manufacturer has a way of maintaining brand quality because they want to stay in the market. And this is what pro team pt-60V GFA brings you.
First, the forced air heater can produce a power output of up to 60000 BTU. This means that you can hit a large area in your house and there’s very what you are looking for. If your room is within 1500 square foot, then you are covered totally. The good thing is that there’s propane heater allows you to change the heat settings to what you’re comfortable with.
It would help if you had a 20 lb propane tank or powerbase heater for up to 11 hours. This means that it’s totally possible and conveniently flexible. It weighs just over 11 pounds and measures 20 by 11 by 15 in which is just the right size 4 a heater that you need in camping or for other versatile users.
If you like colour and ambience, then you might want to look for one that creates a good ambience with your House decor. Which is exactly why you no want to choose either the red or the black coloured pro-temp propane heater. Again you can also choose the 40000 or 60000 or 150000 BTU heater depending on the coverage you need.
In case you want a powerful heating appliance that covers 1500 square foot, then this could be your bed. The adjustable heating functionalities let you direct the warmth two specific areas. Therefore, you can choose which areas of your house you need to get warm.
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- Automatic shut-off.
- Heat regulator.
- 1500 square foot coverage.
- Adjustable heating angle.
The ignition might fail.
Sometimes you do not want liquid propane pressurized heater, but instead, you want somewhere you can sit down and enjoy the heat. It’s not always about hot air, but sometimes it’s just about a direct source of heat. That’s why I’m bringing you the best propane barn.
The Mr Heater mh80 CV is one of the best features you can never find because apart from being portable, it allows you to use its versatility. You can heat up to 1900 square feet and run it on a 20-pound bottle for several hours. The 80000 BTU heater will not only serve your house but also give you unidirectional 360-degree hit.
In the box, you will find a 10-foot hose that will make sure that you have all the versatility you need to use the banner. This is very important because it keeps the fuel tank was from the banner for safety purposes to stop also you can keep it far enough and move it around without any problems.
At the same time, you will find operation instructions, and manual, make sure you can easily set up the burner. It should take you just three to 5 minutes if you follow the instructions and you don’t need any technical assistance.
And when it comes to using the Mr heater mh80cv steel construction ensures that is not only last for long but also endures great heat and any shock.
Still looking for the best propane heaters for construction sites this could work well because it heats up to 1900 square feet. The 20 lb propane cylinder may require purchasing by you because it’s not incident in the unit, but once you have it, you will be able to run for up to 10 hours.
The radiant heaters will emit infrared radiation that will directly warm you. Instead of warming the air, this infrared energy will heat the surrounding objects you need to understand that forced air heaters normally have a fan that blows air. This means that it is noisy in the end. Then radiators normally hit the oil in the reservoir, and there’s heat up the surrounding air. The problem with a radiator is that it takes time to hit.
You may also like the portability and versatility, or there’s Mr Heater propane convention from Enerco. It weighs about 6 pounds and measures 16 by 15 by 19 inches. The unit can produce a hit of between 30 and 80000 BTU.
- 30,000-80,000 Btu portable propane convection heater
- For construction sites, workshops, barns, etc.; heats up to 1,900 square feet
- 360-degree directional heat;
- Minimum 20-pound propane cylinder not included; 10-foot hose and regulator included
- Adequate combustion and ventilation air must be provided; limited 1-year warranty
- Sturdy Steel construction 30000 to 80000 BTU output.
- 360-degree directional.
- Versatile and portable.
- 1900 square foot coverage.
- One year guaranteed warranty.
- It’s not quick enough to hit a room.
- The 20lb propane bottle not included.
The Mr Heater store has several high-quality propane appliances that will not only warm-up your house but also give you value for your money. Sometimes what you want is an indoor portable radiator which will not necessarily hit up the air but rather produce heat directly to you. And the Mr Heater F2 74830 mh18b RV is exactly what you may be looking for.
When it comes to a best propane heater for cabin as well as a personal heater, you may not say you want something large or a meeting too much heat. This radiator produces between 4000 and 18000 BTU of heat which is enough to cover 450 square feet. It has been approved for indoor warming and clean-burning and has nearly 100% efficiency.
You may have already been used to large propane heaters, but in this case, you have a portable appliance. Measuring 19 by 12 by 17.75 inches and weighing 16 pounds, this heater is not only portable but also versatile.
In case you happen to use it in high altitude, you can be sure that it will perform well just over 7000 feet above sea level. However, above that, it could easily shut off due to pressure. And this out trash at feature is critical because it makes sure that the lights go out. When the heater detects low oxygen levels, it just goes off to make sure that it does not use up more of that. This is a security and safety feature for you because in case your house has a problem with ventilation, the heater will save that oxygen for you by shutting off.
And yes, you’re not going to scorch yourself using this machine because all you need to do is use the heat level settings. Here you can just set to a temperature that you’re comfortable with. Of course, you will need to connect this unit to a propane tank that’s not included in the initial purchase.
- 4, 000- to 18, 000-BTU radiant heater for spaces up to 450 square feet. Approved for indoor/outdoor use; clean-burning; nearly 100-percent efficient.Mounting type:Floor Mount
- When operating the heater at altitudes over 7, 000 FT above sea level the heater may shut off.
- Auto shut-off if tipped over, if pilot light goes out, or if detects low oxygen levels
- Low, medium and high heat level control knob for steady temperatures; connects to propane tank (not included)
- THE USE OF UN-AUTHORIZED ACCESSORIES/ATTACHMENTS WITH THIS HEATER ARE EXPRESSLY PROHIBITED, MAY CAUSE SERIOUS INJURY, AND WILL VOID THE .
- Portable and versatile.
- 450 square foot coverage.
- Temperature control knob
- Produces up to 18000 BTU of heat per hour.
- Uses propane gas.
- You can connect to the fan that runs on 4D batteries or AC adaptor.
- Has an automatic safety shut-off feature.
- The propane bottle and batteries are not included in the purchase unit.
When it comes to indoor heaters, it is sometimes you want a cabinet heater that is not only possible but also gives you all other functionalities of a propane heater. A radiator is not only going to offer you as much heat as you want but also give you a chance and right to change the settings to what’s comfortable for you. This is exactly what the Dyna-Glo ra18lpdg offers you.
First, this is a portable and versatile weighing 20 pounds and measuring 16 by 17 by 23 inches. It has wheels at the construction base to move the Cabinets around. Also, the cabinet has got handles at the side to help you carry it if you need to. This makes it easy not only to move the cabinet but also to make sure that the heater can reach any part of your house.
Also, the construction has a front safety grill that makes sure you don’t end up touching the infrared hot panel. Of course, you don’t want any situation whereby your skin will be exposed to this red hot part. For that reason, they put the grill to prevent you from reaching that dangerous part.
This best propane heater for cabin can produce between 6000 and 18000 BTU per hour. The heater dissipates heat to 600 square feet. So your house is well covered, and you will not have a problem as long as you have this heater.
The oxygen depletion sensor ODS is another thing that will help you to keep safe with this propane device. You first realize that propane uses up the oxygen in the house to burn and produce heat. Therefore, if you do not have a mechanism that will prevent exhaustion of the oxygen, you might end up suffocating. To prevent all this, therefore the device comes with an oxygen depletion sensor that ensures in case the ventilation is not good enough for the oxygen levels go below the recommended level it automatically switches off.
The piezo ignition makes sure that you do not have to use a lighter or matchbox. Propane is an enemy to open fire, and you don’t want these two to come in contact. You realise that in case propane gets into contact with fire it will just bust and to prevent this from happening the piezo ignition comes to play. But the good part is also that you can use the dashboard to control the heat. The heat is then produced on the three heating system.
- 6,000 - 18,000 BTU
- Heats up to 600 sq. ft.
- Piezo Ignition with Heat Controls
- Side Carry Handles
- 3 Plaque Heating System
- Front Safety Grill
- Oxygen Depletion Sensor (ODS)
- Auto shut feature.
- Separate propane gas cylinder for safety.
- Oxygen depletion sensor.
- Portability and versatility.
- Economic carry handles.
- 18000 BTU output.
- Piezo ignition.
- Does not come with a built-in fuel tank.
Mr heater is a popular brand when it comes to producing some of the best propane house heating units in the world. And with their corporation f270470 Convection, they have turned everything to a new level. This brand comes in 3 titles. There is the 25k the 30K and then the 75k heater.
Mr heater corporation F2 7470 convention heater 25000 BTU is one of those you will like to use. First, it’s not only powered by propane gas that also allows you to interact with the heat directly.
This means that if he acts like Direct fire but in this case coming from propane. That, however, does not mean that you’re going to get burnt because it has lots of safety features to ensure you don’t.
To produce 25k BTU per hour versus propane heater runs 17 hours on at 20 lbs propane cylinder. This amount of heat reaches our coverage of up to 625 square foot which is enough for your room, I believe.
Then, for safety and versatility, this heater comes with a 10-foot hose and a regulator that allows you to connect to the tank without necessarily having to bring the propane and heater into Direct contact.
Already, you have seen the dangers of exposing the propane tank to direct heating. So this type and she was that you are safe.
And for better safety, control there is no electricity required to handle this heater. The standing pilot makes sure that there’s lots of safety. The steel construction also comes into place to ensure that the heater may they melt damaged easily. Of course, you understand how strong Steel is.
Plus this unit is quite lightweight at 3 pounds only and measures 13 by 13 by 14 inches.
- 25,000 BTU per hour made for use with propane gas
- Operates up to 17 hours on a 20 lb. Propane tank
- Heats up to 625 sq. ft.
- Standing pilot for increased safety and no electricity required
- Comes with 10 ft. hose and regulator and has a P.O.L. Tank connection
- Versatile and good for camping sites.
- 25000 BTU per hour.
- Separate propane gas tank.
- Runs for up to 17 hours.
- No need for electricity.
- 10-foot hose and regulator.
- You have to buy the propane gas tank separately.
Modine HotDawg is one of the best propane heater for garage in the market today. And it’s for a reason because it started back in 1918 in Wisconsin. They have revolutionary products today which include funds radiators as well as steam pipes. If you love American products, then you might as well want to use the Modine hot dawg garage heaters.
This heater is meticulously designed not only to give you the ambience that works well with your style but also to keep a low profile and easy to maintain. You realise that there are so many haters brands in the market today. But, you want one that stands out then you must always look for a design that is easy to install and maintain. This one has neutral colours.
It’s worth noting that this modern natural gas garage heater hd45 as 0111 is quiet enough and doesn’t disturb you so that it will fit well, especially for commercial and residential purposes.
You can install it easily with a few wiring connection full stops of hospital-acquired propane gas and electricity to produce about 45000 BTU every hour full service there’s enough to keep your garage warm. At the same time, this modern heater model ensures that you can always choose whether to run on electricity or natural gas. But you need to notice appreciate that if you choose natural gas, then you went nation must be top-notch.
Measuring 26 by 12 by 16 inches and weighing 60 pounds, this natural gas heater is not only possible but also versatile. However, in most cases, people use it in a fixed position at the corner of your house.
- Quiet operation
- Certified for residential, commercial and industrial use
- Low profile design and neutral color
- Installs quickly and easily with field wiring connections and knockouts for quick access to gas and electricity
- Standard power exhaust simplifies side-wall or roof venting with small-diameter vent pipe
- Operates quietly.
- It’s a certified brand for commercial industrial and residential use.
- It has a neutral colour that works well in any style.
- Easy to install and maintain.
- The standard exhaust is easily adjusted.
- 80% efficiency
- The relatively expensive.
- Requires ventilation.
Dyna-Glo propane forced air heater is one of the best that you can use both for its functionality and the price. This heater has got industrial strength producing up to 60000 BTUs of heat per hour. Then, the construction is a high-grade metal that can run for long without a necessary break it. At the same time, it runs on propane gas of 20, 40, or even 100 lbs.
You can put the best propane heater for garage in any angle to adjust where you want to direct the heat. With this kind of construction and design, you can warm an area of up to 1350 square foot with no troubles.
And of course, you can use the dashboard to regulate the heat to your preference.
You shouldn’t worry much about the installation because it’s easy to handle and carry. 17 pounds isn’t too heavy carry around. Then it has got an ergonomic handle to make this possible.
You forget an on-and-off electronic ignition which protects you from getting burnt. Remember that propane should not come into contact with open flame because it’s highly inflammable. Thus, the electronic ignition ensures that you’re safe using this unit.
And, in case the heater overheats, there is an automatic shut-off feature that prevents it from burning the house. This protects you from unwanted eventualities.
The unit runs on a 20 lb tank of propane and produces 60000 BTU for 7 hours non-stop. Of course, the running time may vary depending on the intensity of the heat that she needs.
The study metallic constructions and shows that you are units is going to stay with you for long. It’s unbreakable and durable fruits of the motor itself is a high-performance and once it’s mounted onto the metal make it secure it’s going to burn for long so then the banner is brass which means it is not going to melt even under extreme.
- Brand New in box. The product ships with all relevant accessories
- Produces 30000 to 60000 BTU of his power.
- It has a strong metallic construction for durability and Performance.
- The propane burner runs well with a 20lb gas cylinder.
- You can tilt the angle of the blower to move the heat where you need it most.
- It covers a large space of up to 1300 square foot.
- You have to buy the gas tank separately.
- The blower can produce unwanted sounds.
What to Look For In a Best Propane Heater for Garage, House & Patio
When you choose to buy a best propane heater for garage, house & patio then you have to pay attention to certain factors. For instance, you should have in mind the size of your garage, the kind of cars you have as well as the security features. You see, your propane heaters should neither leak nor catch fire because certainly, you don’t want any disaster inside that place. Anyway, here are considerations to help you find a good propane heater.
If your garage is too small, you will certainly not want to use a powerful heater. You see, you don’t want the place to be too stuffy or hot. Small garages require a less powerful heater that can cover the limited space, while the larger ones deserve a powerful heater.
Some heaters come with a freestanding feature, which means they can sit on the ground and allow portability and versatility. It’s easy to move these heaters around and even get them to your garage, or in a tent. Some people even put them under their legs, especially during extreme winters.
Wall-mounted heaters, on the other hand, are fixed, but they are more powerful. The ability of this heater to feed a whole garage largely depends on the diffusion mechanism. You see, the only way the heat will get to the corners of the garage is through pushing hot air all over. Some heaters use fans, while others are radiant.
So, when you have a large garage, you can decide to use multiple heaters or find a fan-forced heater. Or, you can find one of the most powerful heaters such as this one .
Source of Power
How does your heater get its power? Does it rely on natural gas, electricity or propane? Every source of power has its cons and pros, and you have to make sure you have one that fits your convenience. All these heaters will be good depending on your type of garage, or the situation.
For instance, if you want to get an eco-friendly heater, you will certainly want to use the electric heater. The natural gas heaters are good for people who have large garages, and for people who want to save dollars. Then, propane heaters are ideal for powerful output.
Natural gas-powered heaters
Millions of people across the world prefer natural has heaters due to their easy installation and maintenance. It’s also cheap to use natural gas because it’s affordable at the station. And, natural gas is efficient, and you only need to install has lines for your garage or house.
However, we have to admit that the costs of installing a natural gas heater are quite high. The good side is that after you have the heater, the maintenance costs are low.
Also, understand that natural gas heaters come in two types; the fan-forced and the radiator. The fan-forced garage heater has a fan that diffuses hot air around the space. Then, the radiator has an infrared tube that produces heat which then spreads out to the rest of the room.
You can use LPG or natural gas to fuel any of these heaters. And, because the natural gas can burn into toxic fumes, you must come up with a convenient venting system that eliminates these gases.
Electric garage heaters
The majority of urban dwellers recognize electric heaters. At least, these are compact and don’t require any sophisticated maintenance skills. Electricity heats thermostats, and the infrared heat diffuses to the rest of the room. Electric heaters radiate a consistent flow of superheated air. If you have medium-sized rooms, the electric heaters are your best option.
And, the electric variety normally has an automatic switch-off feature that allows them to sense when the heat goes overboard and control the temperatures.
If you wish to buy best propane heater for garage in your urban apartment, check this Amazon link out.
Radiant and infrared garage heaters
Sometimes, you may want a localized heater that provides heat at a specific place. Think about a fireplace. The radiant-infrared garage heater generates powerful heat, especially for heating a small space. The wall-mounted infrared heaters are fixed, and you need to stay around them for warmth. But, the freestanding heaters let you walk around with them and even put them under your legs. Buy some of the best radiant infrared garage heaters here.
Fan-forced garage heaters
When you are looking for the best propane heater for the house, get those that can full your entire house with heat. Hot air needs to be circulated evenly throughout the room. So, a fan-forced heater draws cold air and then ejects heated air. The heat is then blown around the room, and this warms up the room quickly.
However, this heater isn’t the best for small rooms because they can easily become stuffy. Advanced varieties allow you to switch off and control the temperatures.
Do you want the best fan-forced garage heaters? Buy one from Amazon today!
Power Output Level (BTU)
Another important feature you need to look at is the power output. Heaters come with a calibration that denotes the British Thermal Unit (BTU), which is basically the amount of heat that the device can generate.
Small heaters have BTU of 4000 to 9000, like this one . Such a heat output works well for small garages with an area of up to 250 feet squared.
In case your garage is 500 to 600 square foot, then you might want the 25,000 BTU heater.
And, when your garage is more than a thousand feet, then goy will need heaters that can yield more between 30,000 and 60,000 BTU. Our recommended heavy-duty heater for large garages is this Dyna Glo RMC from Amazon
The security of your heating appliance should always be top of your mind when choosing a heater. Certainly, you want to be sure that it’s safe to use the heater. Remember, heat, when mishandled, can cause extreme damage. And, because you care about your life, your loved ones and property, you must pay attention to the safety standards of the heaters you use.
Wire Guard and Cool-Touch feature
Some advanced heaters such as this one on Amazon come with an extra surface that protects you from the heat. The wire-guard feature ensures that you don’t get into direct contact with highly heated surfaces.
Protecting the heater is a crucial part of the heating process. At least, you want to have consistent warmth in your house without destroying the device. So, find out if the heater has an automatic shut-off functionality.
Some models come with an inbuilt high-temps auto-switch that turns off when there’s overheating. Also, some gas-powered heating devices have safety sensors that protect the heater from blowing into flames.
Sensor and Tip-over switch
Heaters can sometimes fall off, and you need to ensure they don’t get damaged. High-quality heaters come with a sensor and top over switch that shuts off to ensure the heat does not cause damage in your garage. Have a look at this one for more details.
When using a heater, you need to have the power to control how warm your house can be. And this all boils down to the setting menu. Advanced heaters come with a user dashboard from where you can set temperatures you want for your house. Adjusting the heat lets you decide your level of comfort.
Some thermostats come with low-high settings. So, you can decide the best temperature for your winter mornings or the most comfortable for the summer.
The Cadet Portable Heater has some of the easiest settings on Amazon and could be worth being added to your cart.
Make sure your portable heaters have an ergonomic handle. Of course, you will need to move around with your heater without burning yourself. You, therefore, must find a heater whose handle gives you enough grip. We recommend rubber or synthetic handle like the one in this heater here.
Length of cord
When you decide to use an electric heater, you need to ensure the cord is long enough. Remember, the manoeuvrability and portability of your heater depend directly on the length of the cable. The standard heater comes with a 6-foot power cord such as this one here.
Then, when you’re using propane gas heaters, you should look for a long hose. Dyno Glo RMC prides a 10-foot hosepipe for additional portability.
How BTU’s are counted and how many will I need?
The thermal output of a heater is measured in BTU per hour for propane-powered heaters and Watts for electric models. High BTU or wattage shows that the device produces more heat per square feet.
How do you calculate the BU and wattage? Of course, you need to be sure that the heater you are taking home is good enough for you. So, you must calculate the wattage or BTU.
First, you should calculate the amount of heat you need to warm your house. It’s simple, as you only need to multiply the area of the room by eight. You’ll get an approximate figure of the energy needed to make your house comfortable. However, you have to be alive to the fact that this figure depends largely on the ceiling, climate, weather and ventilation.
And for easy calculation, you can find the BTU and AFUE rating on each model of propane heater you want to buy. The AFUE rating indicates the rate of efficiency for every device per BTU/hr. In short, the AFUE efficiency rating is a percentage showing the heat produced per every unit of propane gas burnt.
Are Propane Heaters Safe? Safety Precautions (Safety Features)
The heater should have an oxygen depletion sensor (ODS) that monitors the levels of carbon monoxide and oxygen in the room. Then, when oxygen is too low, the monitor cities of and when the carbon monoxide is too high in the room in the device is going to switch off automatically.