Posted: August 17, 2026
Just because Labor Day weekend is approaching doesn’t mean that the end of grilling season is, too. Here in Southeastern Pennsylvania, grilling continues well into the fall with tailgating and other parties.
Few things are more frustrating than firing up the grill for a cookout, only to run out of propane halfway through.
he good news? Checking your propane level is quick and straightforward, with no special tools required. This guide walks you through three reliable methods, plus explains why propane is a smart choice for grilling and how to stay stocked up year-round.
Before diving into the how-to, it’s worth knowing why so many homeowners prefer propane over charcoal. Propane grills heat up fast, usually in under 10 minutes, so there’s no waiting around for coals to get ready. Temperature control is more precise, which makes a real difference when you’re cooking everything from burgers to delicate fish fillets.
Propane also burns cleaner than charcoal, producing fewer particulates and no ash to dispose of afterward. That means less cleanup and a smaller environmental footprint per cookout. For families who grill regularly, that convenience adds up quickly.
Method 1: The warm water test
This is the easiest method and requires nothing but a cup of warm water.
It’s simple, fast, and surprisingly accurate for everyday use.
Method 2: Weigh the tank
Every standard 20-pound propane tank has its empty weight (called “tare weight”) stamped on the collar near the valve. To check the level:
A full 20-pound tank typically weighs around 37–38 pounds. If your tank weighs 27 pounds and the tare weight is 17 pounds, you have about 10 pounds of propane left—roughly half a tank.
Method 3: Use a gauge
Many newer tanks and aftermarket accessories include a propane gauge. These attach between the tank valve and the regulator hose, providing a quick visual reading of your fuel level. If your setup supports one, it’s the most convenient option for regular grilling.
Gauges are easy to find at your local home improvement store or online.
A standard 20-pound tank provides roughly 18–20 hours of grilling time at medium heat. If you grill two to three times a week, plan to check your level every couple of weeks. Running out mid-cook is avoidable with just a quick check before you fire up the grill.
Keeping a full tank on hand doesn’t have to be a hassle. Sweetwater Propane offers propane cylinder exchange services across Southern Pennsylvania, so you’re never far from a reliable refill.
Here’s what makes Sweetwater Propane stand out:
The in-person exchange process is simple: bring your empty cylinder to one of the retail locations, leave it outside next to the storage cages, and head inside to the customer service desk. A clerk will ring up your exchange and accompany you out to swap your empty tank for a full one. That’s all there is to it.
Checking your propane level takes less time than preheating your grill. Make it a quick habit before every cookout, and you’ll never be caught short again. And when the tank runs low, Sweetwater Propane’s cylinder exchange network makes restocking fast, safe, and convenient.