Best Propane Tank Monitors and Gauges (Reviewed)

For the longest time, checking our propane level meant walking outside, looking at a small dial on the tank, trying to remember what percentage we were at last week, and then going back inside and promptly forgetting to call the supplier.

It worked, until it did not.

We ran low more than once because life got busy and checking the tank just was not top of mind. It was not until we started looking into ways to make the whole process less manual that we learned propane tank monitors were even a thing.

If you are in the same boat, walking out to check a gauge and occasionally cutting it closer than you would like, this article is for you. Here is a breakdown of the best propane tank monitors available, what they actually do, and how to pick the right one for your setup.

What Is a Propane Tank Monitor?

A propane tank monitor is a device that attaches to your tank and tracks the fuel level automatically. Most modern monitors connect to your home’s WiFi or use a cellular signal and send the reading to an app on your phone. Some will alert you when your level drops below a threshold you set, so you know exactly when to call your supplier without ever stepping outside.

For anyone managing their own deliveries, which is exactly what we do, a monitor takes one more thing off your mental list. You stop guessing and start knowing.

What to Look for Before You Buy

Before diving into specific products, here are the things worth paying attention to:

Compatibility with your tank. Most residential propane tanks use a standard float gauge with a 1.75-inch dial fitting. Wireless monitors typically clip onto this fitting or use a magnetic sensor. Check your tank gauge style before ordering.

Connectivity type. WiFi-based monitors require your tank to be within range of your home network. If your tank is far from the house, look for a monitor that uses Bluetooth with a hub or a cellular connection that does not depend on your router.

App quality. The hardware is only as useful as the app it connects to. Look for monitors with apps that support custom alerts, usage history, and a clean level display. A bad app makes a good sensor frustrating to use.

Battery life. Most wireless monitors run on batteries and need to be changed every one to two years. Check what type of battery the device uses and how easy it is to access.

Above-ground vs. underground tanks. Most of the monitors below are designed for above-ground tanks. If your tank is buried, you have fewer options and may need a monitor specifically designed for underground setups.

The Best Propane Tank Monitors

1. Mopeka Pro Check Universal Propane Tank Sensor

The Mopeka Pro Check is one of the most popular propane monitors on the market and for good reason. It uses ultrasonic sensors to measure the liquid level inside the tank and sends readings via Bluetooth to the Mopeka app. A hub is available if you want to extend the range and get readings from anywhere, not just when you are within Bluetooth distance.

The setup is genuinely simple. The sensor attaches magnetically to the bottom of your tank, no tools required. The app shows your current level as a percentage, tracks usage over time, and lets you set low-level alerts.

It is worth noting that Mopeka sensors work by reading through the tank wall, which means they work best on steel tanks. Performance can vary on older or heavily corroded tanks.

Best for: Homeowners who want a reliable, easy-to-install option and are comfortable with Bluetooth range or adding a hub for remote access.

2. Tank Utility Propane Tank Monitor

Tank Utility takes a different approach and uses a cellular connection rather than WiFi or Bluetooth. This means it works even if your tank is far from your router, and it sends data to an app regardless of where you are in the world.

The device screws directly onto the float gauge fitting on top of your tank and reads the dial position to determine the fuel level. Setup involves a small amount of installation, but the cellular connection makes it one of the most reliable options for rural properties where WiFi signal at the tank is inconsistent.

Tank Utility does charge a small monthly fee for the cellular data plan, which is worth factoring into the total cost. That said, for a property where running out of propane means no heat or hot water, the subscription cost is easy to justify.

Best for: Rural homeowners with tanks that are far from the house or in areas with weak WiFi coverage.

3. SensorPush HT1 with Propane Adapter

SensorPush is primarily known as a temperature and humidity sensor, but paired with a compatible propane adapter, it can send tank level alerts through its app and integrates well with smart home systems like Apple HomeKit and Google Home. If you are already using a smart home setup and want your propane level to fit into the same ecosystem, this is worth considering.

The tradeoff is that the setup is a bit more involved than the Mopeka or Tank Utility options, and the propane-specific functionality is more of an add-on than a core feature.

Best for: Smart home users who want propane monitoring to integrate with their existing setup.

4. Cavagna Group Propane Tank Gauge

If you are not ready to invest in a wireless monitor but want something better than the standard dial gauge that came with your tank, the Cavagna Group gauge is a simple and affordable upgrade. It is a direct replacement for your existing float gauge and features a large, color-coded dial that is much easier to read at a glance.

Green means full, yellow means order soon, red means order now. That is it. No app, no subscription, no battery. It is a small upgrade that makes a real difference when you are checking manually.

We have not made the jump to a smart monitor yet, but this is the gauge we use today and the color coding alone has made it easier to stay on top of our level.

Best for: Homeowners who want a no-tech improvement to their current manual monitoring routine.

How We Monitor Our Tank Right Now

To be straight with you: we are still in the manual camp. We walk outside, check the gauge, and call our supplier when it gets low. The Cavagna gauge makes that process less annoying because we can see the color indicator without squinting at a tiny dial.

But after researching for this article, we are seriously looking at the Mopeka Pro Check for this coming winter. Running low once taught us that out of sight really does mean out of mind. Having an alert sent to your phone when your tank hits 25 percent is the kind of safety net that makes the whole system feel a lot less fragile.

What Level Should You Reorder At?

Regardless of which monitor or gauge you use, a good rule of thumb is to call your supplier when your tank hits 30 percent. Most suppliers need at least a few days to schedule a delivery, and during peak winter months that window can stretch to a week or more. Waiting until you hit 20 percent or lower is cutting it too close.

If you are setting up alerts on a smart monitor, 30 percent is a safe trigger point. Set a second alert at 20 percent as a backup in case the first one slips by.

The Bottom Line

If you have ever walked back inside after checking your propane gauge and immediately forgotten what the reading was, a wireless monitor is worth the investment. The Mopeka Pro Check is our top pick for most homeowners thanks to its simple magnetic installation and solid app. The Tank Utility is the better choice for rural properties where WiFi at the tank is not reliable.

If you are not ready to go wireless, swapping your existing gauge for a color-coded option like the Cavagna Group gauge is a small change that makes manual monitoring noticeably easier.

Either way, the goal is the same: stop guessing and stop running low. Your water heater, stove, and fireplace will thank you.