Why Is My Propane Grill Tank Hissing?

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What the sound means and what you can do about it

Sometimes the pipes in our house rattle and clank. Depending on the age of your home, your stairs may creak. Refrigerators make an audible sound when they run. Bottom line, things in and around our homes make noise. Your outdoor grill and the grill tank on it are no exception.

What a hissing sound from your grill tank means

Many of us throughout Connecticut, Massachusetts and New York spend time at our grills once spring hits and the weather gets warmer. If you are one of those people, you are probably quite familiar with that satisfying sizzling sound you hear as your steak, chicken, burgers and hot dogs are firing up on the grill.

But you are probably less excited if you ever hear a hissing sound coming from your grill tank considering this usually indicates that something is going on.

If you hear a hissing sound coming from your grill tank, there is a good chance that your tank’s pressure-relief valve is open (this is especially true if the sun is out and it’s a warm day).

Pressure-relief valves on a grill’s propane tank open when the pressure inside that tank reaches a specific point (a tank’s pressure increases as the propane that is inside that tank warms up). As pressure is released through an open pressure-relief valve (which happens so that your tank doesn’t rupture), you can typically hear a hissing sound.

The good news is that this hissing sound will go away on its own once the pressure has decreased. There is no need for you to do anything. In fact, you shouldn’t try to close an open pressure-relief valve. It will close on its own once the pressure level has dropped.

If the hissing carries on or if it’s not particularly warm out, your grill tank may have a leak. In this case, it is best to disconnect your tank from the grill, move the tank to a well-ventilated area and leave it alone until it’s completely empty. It is only safe to return it to your grill once it is 100% empty.

Refilling and replacing your propane cylinder

Hissing or no hissing, the time will eventually come when your propane cylinder is going to need to be refilled and replaced. When that time arrives, it is important to know how to safely remove and then replace your grill’s gas cylinder. Here are some steps that will help ensure your safety:

Grills and grill cylinders from Hocon

Hocon offers refills for propane grill cylinders in both Connecticut and Western Massachusetts.

We also carry a wide variety of barbeque grills that help take your home’s outdoor space to the next level.

So whether you are in the market for a new grill or need a propane refill for your current grill Hocon can help. Contact us today to learn more!

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