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The Best RV Propane Detectors

Written by Philip Lopez / Fact checked by Paul Lemaire

In the RV, there’s a lot more going on than your stationary home. You probably have inverters, AC systems, and many propane-powered appliances to make your RV life convenient. Since you use a lot of energy sources, there’s also a higher chance of accidents.

best rv- propane detector

If you have a lot of propane appliances in your mobile home, consider getting the best RV propane detector. This unit will help detect any propane that builds inside your RV and alarms you of its existence. To help you decide which RV propane detector to choose, check these RV propane gas detector reviews and guide below.

Product name Outstanding Features
Top 1
MTI Industries 20-441-P-WT
  • Comes with a mounting plate
  • Easy to use with its plug-in operation
  • The sound is loud enough to hear outside
Top 2
EG Detector
  • Comes at a reasonable price
  • Shows real-time readings of gas level
  • Provides multiple mounting choices
Top 3
MTI Industries 30-442-P-WT
  • Its white look and big faceplate
  • Only have two wires for easy setup
  • Doesn’t need a battery replacement

Table of Contents

Best RV Propane Detector Reviews

1. MTI 603.104 Industries 20-441-P-WT Propane Gas Alarm

This Safe T Alert 20 Series RV propane gas alarm is a suitable replacement as this unit snaps back into the initial bracket easily. It only took about a few minutes to attach this new detector to my old device’s wall mount. To use, simply plug it in without any need for any battery backup.

This MTI propane leak detector has a Mute Alarm button to silence the unit when the camper vehicle is ventilated. It also features a rapid recovery sensor to reactivate the unit when higher propane levels stay. I love the new mounting plate because it makes installation hassle-free.

As for the alarm’s loudness, I must say that it’s pretty loud. The alarm’s sound is so ear piercing that I can hear it outdoors when the unit is installed inside the RV. I have personally witnessed that this unit works up to 40 feet, which is enough to cover the whole RV area.

I like the white color design because it complements well on my wooden wall. This unit has a reasonably small size, which fits my motorhome. Like its MTI predecessors, the 20 Series performs well in detecting gas or propane at all times.

However, this unit doesn’t come with mounting screws. I have to buy them myself to mount this unit to the bracket securely. The cover also comes off slightly easy, but it could be the fault of the mounting locations.
  • Snaps easily into the bracket for quick replacement
  • Easy to use with its plug-in operation and sensor to detect gas leaks
  • The sound of the alarm is loud enough to hear outside.
  • Can be muted after the alarm activates through a button
  • Comes with a mounting plate for easy installation
  • Looks good with its reasonably small size and white color
  • Lacks some mounting screws for mounting
  • The cover may come off.
Overall, the MTI Safe T Alert 20 Series is an incredible RV propane detector replacement as it fits most brands and models. This gas alarm also works well in detecting propane at dangerous levels.

2. EG Propane/Natural Gas Detector

If you want to know the accurate measurement of real-time propane level, this EG detector might satisfy your need. This device alerts higher levels of propane through the combination of lights and sounds. More specifically, the unit flashes a red light while giving off an 80-decibel siren with a speaking voice alarm.

The thing that satisfies me the best is the digital numeric indicator because I can see where my reading is anytime. I know that my propane appliance is working properly as long as the LED screen shows a zero reading. Considering the price, this unit is a great value.

This unit only consumes three watts of electricity, so it didn’t affect my electric bill that much. I test this unit using an unlit lighter, and the device works as expected. The voice alarm is loud enough to wake a heavy sleeper like me.

I adore the double-sided tape mounting because it doesn’t leave smears on my cabinet. The tape is on the thicker side, so it holds the device very well. This unit also offers several mounting options, including the screws.

However, the ABS shell feels a little flimsy. This unit also doesn’t detect natural gas as it’s expected to do.
  • Shows real-time readings of gas level in an LED screen
  • Combines voice alarms, siren, and light to warn for gas leaks
  • Comes at a reasonable price
  • Consumes no more than 3 watts of electricity
  • Double-sided tape is thick enough for ample support and leaves no traces behind.
  • Provides multiple mounting choices, such as screws
  • Seems to be built with a flimsy plastic casing
  • Not a highly sensitive natural gas detector
Altogether, the EG detector is suitable for propane but not for natural gas. This unit impresses with its real-time gas reading in percentage.

3. MTI Industries 30-442-P-WT Propane Gas Alarm

This MTI Industries RV propane gas alarm belongs to the Safe T Alert 30 Series built for the harsh RV environment. It uses advanced technology to detect hazardous propane levels. Thanks to the rapid recovery sensor, the unit resets when silenced or relaunches when propane remains.

This Safe Alert RV propane gas detector produces an audible sound at 85 decibels, which is almost as loud as a lawnmower. Even when I’m outside my RV, I can still hear the alarm loud and clear. My favorite is the Mute button because it allows me to silence the alarm when the RV is oxygenated.

I love the 12-volt installation because there’s no need to replace dead or missing batteries. This newer MTI model also features an innovative flush mount design for easy installation. Just a snap. And my old unit is replaced with this new RV propane sensor.

I like the white look of this 12 volt propane detector because it appears neat and clean. I’m also so pleased with the big faceplate and the tiny body because these designs cover the rough cutouts. Since there are only two wires, the wiring process is easy, plus it looks lovely.

However, I find the screw holes a bit off. I have to pull the fuse, unscrew the previous unit, and wire the new unit then screw it back in to make it work. It took me about five minutes to install.
  • Detects propane leaks through smart recovery sensor
  • Easy to mute with a simple push of a button
  • Alarms loud enough to hear even outside the RV
  • Doesn’t need a battery replacement for ease of use
  • Its white look and big faceplate make the unit appear neat and clean.
  • Only have two wires for easy setup
  • May require reinstallation to secure the screw holes.
Bottom line, the MTI Industries 30-442-P-WT Propane Gas Alarm is an excellent RV LP gas detector because it’s easy to install, audible, and packed with advanced technologies. To top it all, this MTI model looks nice and neat.

4. HSTMYFS Natural Gas/Propane Detector

The HSTMYFS can detect multiple gases, like methane, coal gas, and liquefied petroleum gas. This device is easy to install because it can be plugged into the power socket easily. This unit provides a digital read, so I know how much gas is present in the air.

When this unit detects any gas leak, it goes off with a sound alarm and red flashing light. The sound alarm is super loud that there’s no way anyone can sleep through the beeping sound. I tried testing it with a lighter placed in front, and the response was pretty quick.

The thing that I like best is the unbeatable price. Considering the quality, this unit is budget-friendly and only consumes less electricity. This device only consumes less than four watts, which isn’t that big of an impact on the electric bill.

The device itself seems to be nicely made. The ABS casing feels durable and resistant to corrosion. The LED screen is large enough to read the numeric figures, especially that it’s highlighted with the white casing.

My only gripe is the obnoxious beep after startup. The unit gives off a loud sound when the power goes out and comes back in the middle of the night.
  • Can detect multiple gases for versatility
  • Plugs into the socket for great ease of installation
  • Provides a digital reading for the current gas level condition
  • Has a super loud alarm when gas is detected
  • Comes at an unbeatable price
  • Only consumes less than four watts of electricity.
  • Beeps after every startup, which can be irritating if it occurs at night
All in all, the HSTMYFS propane detector is a budget-friendly choice. Considering its price, it’s excellent that the unit offers high-end features, like a digital reading.

5. MTI Industries 20-441-P-BL Propane Detector

The MTI Industries 20-441-P-BL is the industry’s smallest camper propane detector in the current market. The small size saves interior area and can replace large surface-mounted detectors. I like that this unit is a hard-wired item because it only needs a little wiring job.

Thanks to the one-touch reset/test button, usage is more comfortable. Moreso, this RV propane alarm can be muted while ventilating, but it will reactivate if dangerous conditions happen again. With its 12-volt power, it means no missing or drained batteries to replenish.

Another thing that I adore about this model is its black color. Black looks elegant, and dirt almost looks invisible for ease of cleaning. I had a similar white model, and replacing it with this new black unit is simple as I used the same mounting screw holes.

It’s easy to know whether the unit is near its expiration because it comes with an End Of Life signal. Red and green LED indicators will tell you whether the unit is on, alarm, or needs replacement. For the loudness of the alarm, I find it audible enough to wake you up from sleep.

However, this black unit is tiny, so screwing them into place can be a challenge. Also, the lifespan is a bit shorter than the others, which is only five years.
  • Compact and elegant with its black color
  • Easy to operate with its one-touch button for reset and test
  • The audible alarm can be muted while the unit is ventilating.
  • Green and red LED indicators tell you the unit’s current status.
  • Comes with an End Of Life feature to signal replacement
  • Can be challenging to screw the holes due to the small size
  • Only provide five years of lifespan.
All in all, the MTI Industries 20-441-P-BL is a decent LP gas leak detector for RV. This unit is impressive since it comes with an End Of Life feature, so you’ll know when to get a new one.

6. GasKnight Natural Gas Detector and Propane Detector

GasKnight is a plug-in propane detector that requires no complex installations. There’s no need to drill holes, so my wall remains intact and stylish. To use, simply plug in and enjoy your day.

This GasKnight model can detect the leading hazardous gases, like propane and natural gas. I like that it comes with a free ebook detailing home gas safety. With that book, I learned a lot about how to make my RV safe from fire hazards.

My favorite is the three levels of voice warning when the unit detects any gas leaks. It also combines an LED flashing light and a siren to warn more promptly. As for the alarm, it’s more than 85 decibels, which can be extremely loud.

I’m quite impressed with the 2-year warranty because it reassures me of the detector’s quality. Best of all, I can ask for a refund whenever I’m not happy with the product’s performance. Since I’m using this unit for propane detection, I installed it three feet from the floor for optimum performance.

However, I find it hard to understand the voice warning because the English diction is a bit unnatural. This unit is also very sensitive that it causes an alert signal even when I’m just walking past it one time.
  • Plug-in installation requires no drills and wiring.
  • Besides propane, it can detect natural gases, like methane.
  • Gives a complimentary ebook detailing home gas safety
  • Provides a voice warning to alert you of dangerous propane levels
  • Emits a deafening loud siren for the warning, plus flashing LED lights
  • Provides a generous 2-year warranty and refund
  • The dictation of the voice warning sounds unnatural.
  • Too sensitive that it may cause false alarms
All in all, the GasKnight propane detector is the easiest to install since there’s no need to wire or drill any holes. This unit is simply “plug and play”.

7. RecPro RV LP Detector

This RecPro RV gas detector will detect any liquid propane that builds in your RV and notifies you of its existence. It sends an audible alarm every five seconds to alert you that it’s time to move out. I like the LED indicator that turns red together with the siren because it’s greatly helpful if you have poor hearing.

One thing that makes this RV propane leak detector a great contender is the lifespan. This RecPro unit provides a 7-year life, which is more than MTI Industries can offer. Also, the unit supports a generous 2-year warranty for peace of mind.

Resetting and muting the unit is easy because there’s a designated button on the front. I find the installation easy because it only needs to be wired into the RV’s battery. The unit should be running normally when the LED light is green.

I like that the usage of this detector is relatively minimal. As far as I know, the LED light only draws less than half a watt from the RV battery. Best of all, this detector looks good when mounted on the wall with its conspicuous white color.

However, RecPro is a bit pricey. The range is also far less than MTI detectors. Nonetheless, this unit works great as expected.
  • Alarms every five seconds to warn you of an impending danger
  • The red LED light indicator makes the warning even more efficient
  • Has a long lifespan, about seven years
  • Provides a 2-year warranty to cover all defects
  • Looks good, easy to use, and quick to install
  • Draws a minimal amount of RV battery power
  • Seems to have a short detecting range
  • A bit pricey compared to similar products
Altogether, the RecPro stands out with its long RV propane detector lifespan. This unit can reach seven years and provides peace of mind for up to two years with its warranty.

8. Atwood 36719 LP Gas Alarm Detector

This Atwood RV propane gas detector offers a proper warning of dangerous LP levels hovering inside the RV. The red light alarms you that LP gas is detected and blinks periodically when the power is running out. When the light flashes to green, it means that the unit is operating under normal conditions.

I’m pleased that this Atwood model notifies when the unit needs replacement. The light blinks to a yellow color when it comes to this regard. According to the manufacturer, this unit needs to be replaced seven years after purchase.

The 36719 is a suitable replacement for the 36720. This gas detector operates efficiently and consumes less power than other similar products. What I like the most is the fuel-cell sensor that’s less sensitive to false alert triggers.

The alarm sound can be as high as 85 decibels. I can hear it clearly even when I’m 10 feet away from the unit. With the test/mute button, I can test and quiet the alarm whenever I want.

My only gripe is that the unit has no proper replacement bracket. This Atwood model is smaller than my previous one, so it didn’t fit my old bracket. Also, 36719 is one of the pricier models out there.
  • Indicator lights make the usage manageable
  • Notifies when the unit is low in power or need replacement
  • Has a decent lifespan of about seven years
  • Uses up less power for energy efficiency
  • The fuel-cell sensor doesn’t get triggered to false alarms.
  • Produces a clear alarm sound (up to 85 decibels) at a considerable distance
  • Doesn’t come with its own bracket
  • Costs more than similar models
Bottom line, the Atwood 36719 is a useful gas detector with fewer false alarms and a wide range. This model may be costly, but it’s all worth it, considering its quality.

9. Oaksay Propane/Natural Gas Detector

If you have a restricted budget, the Oaksay propane gas detector might be the right choice. This unit can detect common flammable gases without hurting your purse. Besides propane, Oaksay can detect artificial gas, methane, and natural gas.

I think Oaksay’s most desirable feature is its ability to reset after activating the alarm automatically. The unit will automatically switch to the detecting condition after the gas is diffused. I’m glad about the indicator lights because they take the guesswork out of its operation.

More specifically, the red LED flashes when the alarm is activated. The unit shows a green LED when it usually works. For failure, the LED shows a yellow color and produces a continuous tone.

Interestingly, this unit doesn’t need a battery. It requires a DC 12-volt supply to work. Under normal conditions, this unit can last up to five years.

The only thing that I had a hard time with was the wiring process because this model doesn’t come with detailed wiring instructions. I realized that I only need to wire the yellow and white (normally closed) or green and white (normally open) wires if I need an alarm signal. For the power supply, you need red and black wires.
  • Has an attractive price at a decent quality
  • Can detect many types of gases, except for propane
  • Automatically resets after the alarm is activated
  • Designed with indicator lights for incredible ease of use
  • Has a helpful failure indicator
  • Wiring instructions should have been more detailed
Altogether, the Oaksay propane detector is a budget-friendly replacement as it costs surprisingly low. One of the things that attract me most is its automatic reset feature.

10. MTI Industries 20441PWT Propane/Gas Detector

Another gas detector that you can quickly hook up to your RV’s current wires is the MTI Industries 20441PWT. This RV propane detector already includes a mounting bracket, so installation is hassle-free. Best of all, it only uses two wires, making mounting quick and easy.

The bottom is a mounting bracket, and it snaps separately. To fix this model into the wall, attach the back with screws, then snap back on. I’m pleased with the instructions because they’re complete and easy to understand.

As usual, the 20441PWT has an audible output of 85 decibels. I can hear it as far as 10 feet away from the area it’s installed. This unit also comes with LED light indicators to make it simple to use.

My favorite is the Mute Alarm button because it helps quiet the alarm when the RV is far from danger. When it detects another possible threat, the rapid recovery sensor reactivates the alarm quickly. Moreso, I’m happy with the compact design because it saves a lot of RV space.

However, lifespan only lasts up to five years. I have bought mine with a manufacturing date of 2019 this year, so I only have four years left now.
  • Easy to hardwire to the RV’s battery with its two wires
  • Includes a mounting bracket for easy installation
  • Comes with detailed instructions for guidance
  • Has a clear audible sound to warn of any dangerous propane levels
  • Can be muted after alarm and automatically reactivates for propane detection
  • The compact design is an excellent space-saver
  • Only provides five years of lifespan.
All in all, the MTI Industries 20441PWT impresses with its ease of use and installation. When you want a quick propane detector replacement, this model might be perfect for you.

11. Eksahol RV Propane/Natural Gas Detector

Eksahol is another good propane detector that can provide safety for your RV, marine boat, and other places where 12-volt power is available.

This unit comes with a relay output, which is that little orange box located in the board’s base’s left-hand corner. The three wires that stick out are the ones used for normally closed (NC) or normally open (NO) alarm systems.

Wiring is relatively easy because there are instructions at the back. For an NC relay output, connect yellow and white wires. The green and white ones are recommended for an NO relay output.

I like that this unit provides an option to connect it to a different audio alarm. I tried linking the relay to another alarm system. and everything was perfectly safe. Also, the relay can be connected to the GPIO inputs of other monitoring equipment.

When the alarm is activated, the sound is quite loud. I think the loudness is around 85 decibels. I’m quite glad that there’s a mounting hole made at the back because it makes this device easy to mount on the wall.

However, this device might cause a possible spark when connected to large sirens or other high current equipment. The contacts might ignite the gas that it senses.
  • Comes with a relay output for more versatility
  • Can be used in the RV and almost anywhere with a 12-volt power source
  • Comes with wiring instructions at the back
  • Can be connected with other monitoring devices
  • Gives off a loud sound alarm
  • Easy to install on the wall with the mounting hole
  • Should be extra cautious when linking to the high-current device and big sirens
Overall, the Eksahol RV propane detector stands out with its relay output. This unit can be connected to another alarm system.

12. MTI Industries 30442PBR Propane/Gas Detector

The MTI Industries 30442PBR belongs to the Safe T Alert 30 series donning a unique design. I love the slight brown color because it looks pretty, and it brings a high sense of security. I also like that it’s flush-mounted because it helps keep the dust from getting into the unit.

This brown unit is easy to install since it only got two wires, red and black. This unit also comes with wire nuts to make replacement and installment even easier. Moreso, the pigtail has an adequate length to suit any wiring situation.

I appreciate that MTI Industries printed the writings in contrasting color with the unit because it makes the directions convenient to read. The directions themselves are carefully explained, further improving the installation process.

Like all other Safe T Alert models, the 30442PBR has the same mute function to silence the device during ventilation. There’s also one button to test or reset the unit. This gas alarm is entirely operational during the mute function and will reactivate when dangerous conditions happen again.

Same with my complaints about the other Safe T Alert models, the 30442PBR only provides a 5-year lifespan. If you bought a one-year-old unit today, then you only have four years more remaining.
  • Has a unique brown color design
  • The flush mount design protects the device from dust accumulation.
  • Wire nuts and long pigtails make installation easy.
  • Instructions are printed on the unit in contrasting colors.
  • Has a mute function to silence the device during ventilation
  • Only has a single button for reset and test functions.
  • Only lasts up to five years since the manufacturing date.
The bottom line is that the MTI Industries 30442PBR is an excellent propane detector because it’s easy to install. This device comes with only two wires and clear instructions.

What To Know Before Buying RV Propane Detector


Since we’re talking about safety here, it’s only essential that you choose the best propane detector for your RV. These devices aren’t just for decoration, but they serve as your protection from harmful gas leaks. Before you shop around, here are essential things that you should be aware of.

The Different Types Of RV Gas Detectors

RV propane detectors can be available in two primary forms, portable and fixed. Portable detectors are usually battery operated RV propane detector models, while the fixed types need to be mounted close to the protected area. These detectors can also fall into different categories depending on their operation mechanism.

  • Electrochemical

Electrochemical detectors are commonly used to detect carbon monoxide and other toxic gases. These units are highly sensitive, and they use electrical currents to send off warning signals. Many of these models come with a digital display.

  • Semiconductors

Also termed as metal oxide semiconductors, these devices also detect carbon monoxide and other poisonous gases. These detectors work through a gas film that consists of tungsten or tin oxides. When exposed to a high temperature, the film generates free electrons to produce current.

Compared to electrochemical models, semiconductors seem to be more efficient as they work in low-humidity scopes. Many of these detectors are RV carbon monoxide & propane gas alarm models because they can detect combustibles aside from toxic gases.

  • Catalytic

Catalytic gas alarms are used to detect combustible gases, like propane and methane. These detectors usually use a platinum treated wire coil to detect these harmful gases. The higher the gas level entering the sensor room, the higher the gas detector reading.

For the catalytic detectors to work correctly, they need oxygen. The gas won’t undergo a reaction process when the oxygen reduces too low.

  • Infrared

In the absence of oxygen, infrared gas detectors are the best solution to measure combustible gases. These devices use the concept of light absorption to gauge the traces of combustible gases in the air. This detector type’s main benefit is its ability to not lose their sensitivity even after extended exposure.

  • Photoionization

For toxic gases and volatile organic compounds, like aromatics, photoionization detectors are a great choice. These units use high energy ultraviolet light to ionize the gas. This type is significant for detecting combustible gases that become a toxic hazard even when present at very low levels.

Benefits And Drawbacks Of RV Propane Detectors

Most RV appliances use propane to fuel energy. To make sure that there are no gas leaks from your propane appliances, getting a propane detector is a good idea. These devices are useful in detecting the existence of poisonous and combustible gases in your RV.

When you have a terrible sense of smell, getting a propane detector is specifically useful. These units will produce sound and light alarms to let you know that there’s gas leaks inside your RV. Even when you’re sleeping, the sound of the alarm won’t fail to wake you up for safety.

Either way, installing this device in the RV gives you peace of mind. You can shut off the propane source right away to stay you away from danger. Keep in mind that inhaling too much propane can suffocate your lungs and make it hard to breathe.

However, not all of these units can be accurate in giving readings. Some of them can be intermittent with their service. More importantly, you have to replace these units every 5-7 years to ensure maximum protection.

Things To Look For When Buying An RV Propane Detector

Getting the right propane detector is essential for the safety of the people inside the RV. Besides what I stated above, here are some essential things to consider when choosing the perfect propane detector.

  • Safety Certifications

To guarantee the optimum performance of gas alarms, look for safety certifications from reputable organizations. Most of the best gas detectors are UL certified. [Underwriter Laboratories of Canada (ULC) is one of the independent organizations that offer reliable inspections for product safety.

  • Multiple Gas Detection

As possible, look for a gas alarm that can detect multiple gases. A carbon monoxide detector is usually common, but if you add a propane detector, you add more safety to your RV. To reap the best of both worlds, search for an RV CO and propane detector. Most models of this list can detect natural gas and propane to add more functionality to the unit.

  • End Of Life

The lifespan of propane detectors is a bit limited. Most models can last from five to seven years. When buying an RV propane detector, look for the manufacturing date. Make sure that it’s dated this year and not the past year, or you’ll end with a model with a shorter life span.

  • Sound Alarm

The detector should trigger an alarm when it detects that the gas has reached a dangerous level. The alarm should be loud and clear that a heavy sleeper can wake up from it. It shouldn’t stop or reset unless you intend to do something.

The best detectors send an alarm that’s at least 80 decibels loud, which is equivalent to a power lawnmower or a noisy restaurant. Anything above 85 decibels can be harmful to your hearing, though. In some models, the sound alarm is accompanied by flashes of red light and even voice warnings.

  • Indicators Lights

For great ease of use, look for indicator lights to take out the guesswork of operation. Typically, detectors show a green indicator light to indicate that it’s working well. A red light means that the unit detects an unhealthy level of propane inside the RV.

An alarm to alert a fault condition is also important because it can make you aware that the unit is falsely showing a safe condition. The last thing you need is your detector showing a zero reading even when harmful gases are looming inside your RV.

An end of life notification is also useful for the best performance of detector units. You’ll know that the unit needs to be replaced when it blinks a yellow color. If you don’t heed the warning, then the detector will shut down and become ineffective.

  • Response Time

The propane detector should respond as quickly as possible. However, response time may vary depending on its sensor type, signal processing electronics, and sample transportation. Some models may be slow, while others can respond to the gas buildup faster.

The necessary response time will rely on the area, system’s purpose, and development of the expected issue. Large leaks need a quick response, whereas a slow buildup of gas concentration can suffice with a slower response.

If you want to know the response time of your propane detector, make a test. Try putting an unlit lighter near the device and see how fast it can respond.

  • Warranty

To have peace of mind, look for an extended warranty to cover all defects and malfunctions. Most models offer the basic 1-year warranty while others provide a year more. Other reliable manufacturers even go a step further by offering refunds for your satisfaction.

Troubleshooting And Maintenance

You must never open the device when combustible gas is present. Regularly wipe the detector with a damp cloth to remove any dust. When the sintered metal filter is contaminated with gas or solvent, replace the sensing head and increase the inspection frequency.

Calibrate the propane detector at least once yearly to appease any sensitivity loss. The calibration should be done according to the manufacturer’s given procedures. You can also hire qualified personnel to do the calibration for you.

When your unit shows a non-zero reading, it means that there’s gas detected in the area. You need to calibrate the device if it shows a non-zero reading even when no propane exists or reads too low or too high.

Check the electrical connections, sintered filter, and sensor when the unit shows a zero reading in the existence of gas. A fault signal might indicate that the electrical connection is wrong or the sensor got disconnected.

Furthermore, to keep your RV safe, don’t forget to check our RV propane regulator guide and read our review about propane tank gauge to find the best products.

Who Makes The Best Propane Detector For RV


MTI Industries seems to lead the pack in the propane detector industry. This manufacturer provides several good models of propane detectors, especially on their Safe T Alert series. In particular, the 30-442-P-WT impresses with its rapid recovery sensor and Mute button.

RecPro is another great contender with its extra-long lifespan. While most detectors offer a 5-year lifespan, RecPro adds two more years for more RV security. Best of all, its detector provides a 2-year warranty, which gives more peace of mind.

If you want more advanced technologies, GasKnight never disappoints. This brand includes voice warnings into the alarm system, so you’ll never miss it even when you sleep. The plug-in style makes it even more adorable as installation becomes hassle-free.

How Does An RV Propane Detector Work

RV propane detectors are powered with 12-volt DC and connect straight to the house batteries. Some models are linked t directly to the LP-gas tank’s electric solenoid valve in case of power failures. Others simply activate in the existence of propane gas.

These products detect gas using different sensors, such as electrochemical, semiconductor, and infrared. A propane detector will measure the gas concentration in a particular area through these sensors. If this device detects a high gas concentration, it will sound an alarm.

Why Does My RV Propane Detector Keep Going Off

Since detectors are susceptible to propane, your unit might detect it even when you didn’t smell it. For your safety, shut off any propane supply and leave the premises. See if the alarm stops after ventilating it for several minutes. When it stops, the unit is detecting toxic fumes.

Once you determine the propane leak’s exact source, get it checked and repaired by a trusted technician. In some cases, the detector can go off when you have low house batteries or needs to be replaced. Other things that can activate the alarm are chemical cleaners, dog farts, Febreeze, cooking fumes, and even hair sprays.

Where To Mount Propane Detector In RV

The type of gas may dictate where you should mount the propane detector. For gas lighter than air, like natural gas, mount the detector near to the ceiling. Consider mounting the detector close to the floor if you want to use the detector for heavier gases, like propane, butane, and LPG.

For the case of ammonia, you have to mount two detectors: one near the ceiling and another near the floor. This is because ammonia is lighter than air but gets heavier when it absorbs moisture from the atmosphere.

How Do You Replace A Safe T Alert RV Propane Gas Detector

First, turn off the power to the DC circuit, then remove the fuse to cut the power. Next, open the faceplate and cut the two wires linking to the detector. Strip the detector wires and connect them to the new alarm’s leads.

Rewire the new alarm using the same colors and consider using connectors to get a secure connection. Nylon crimp connectors seem to work perfectly with DC wiring. Once the rewiring is done, fix the new unit back into place and restore the fuse to turn the new unit’s power back on.

How To Set Up And Use

Set up your propane detector near propane appliances, such as heaters and stoves. Place them near the ceiling since propane is heavier than air. To set up, screw the bracket on the wall and hang the detector on the holes.

Hook the propane detector to the power supply. Test the new unit by pressing the test button. You might need to press the button a couple of times and endure the deafening noise before you achieve a solid green light to indicate that all is working well.


Propane detectors are truly a blessing if you want to feel safe throughout your RV outing. These devices detect harmful propane levels filling your RV to help you avoid possible accidents. If I have to pick the best RV propane detector, my choice would be the MTI Industries 30-442-P-WT because it seems to be the most efficient in detecting gas leaks.

If you like a longer lifespan, I recommend RecPro and Atwood 36719 because both offer seven years of service. HSTMYFS and EG propane detectors are outstanding when it comes to digital readings. For the best plug-in detector, I suggest GasKnight.

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