Posted: June 3, 2024

Why is My Grill’s Propane Tank Hissing?

Always have propane for your grill with Sweetwater Propane’s cylinder exchange

grill tank Watkins Glen, NY Summer barbecues and outdoor cookouts are synonymous with grilling, but what happens when the centerpiece of these gatherings, the grill tank, starts hissing? It’s a common issue many homeowners and BBQ enthusiasts encounter, yet it often leads to confusion and concern. Understanding why your grill tank is hissing and how to safely address the issue is crucial for anyone who loves to fire up the grill.

How propane tanks work

Before we dive into the causes of hissing, it’s essential to grasp the basics of how grill tanks operate.

A standard propane cylinder for grilling consists of several key components: the tank itself, which stores the propane; the valve and regulator, which control the flow of gas; and the safety relief valve, designed to release gas if pressure inside the tank becomes too high. Propane, stored as a liquid under pressure, vaporizes into a gas as it’s released, which is then used to fuel your grill.

The causes behind grill tank hissing

Several issues can lead to a propane grill tank emitting a hissing sound. Here are the most common reasons:

Valve issues: If the valve or regulator isn’t properly connected to the tank or grill, gas can escape, producing a hissing sound. This is often the easiest problem to fix by ensuring all connections are secure and correctly fitted.

Overfilling: Propane tanks are only supposed to be filled to about 80% of their capacity to allow for gas expansion. An overfilled tank can release excess pressure through the safety relief valve, resulting in a hissing noise.

Leaks: The most concerning cause of a hissing sound is a gas leak. This can occur due to a faulty valve, regulator, or damage to the tank itself. Leaks pose significant safety risks and require immediate attention.

What to do if your propane grill tank hisses

If your propane grill tank starts hissing, follow these safety precautions.

How to prevent propane grill tank hissing

Preventing your propane grill tank from hissing starts with proper maintenance and usage.

Sweetwater Propane’s cylinder exchange stations are located all over our Southern Pennsylvania service area. Find the one nearest you!