My Instant Pot is Hissing While Cooking – What To Do

Instant pots are a cheerful delight to the modern-day kitchen. They are a super-efficient and convenient way of electric cooking.

The instant pots are versatile in exploring recipes, crunchy roasting, steaming veggies, yogurt making, and many more.

The branded multi-cooker can pressure cook, slow cook, air fry, non-pressure slow cook, and rice cook.

However, the instant pot occasionally makes hissing noises while cooking, which may be sometimes scary —we’ve all been here before— indeed, they get a bit concerning.

In a while, we will be exploring why that happens and what to do subsequently when it does happen.

Enjoy the ride!.

Why is My Instant Pot Hissing?

The instant pot has a pressure cooker installation—the pressure cooker functions by generating heat under a closed lid. As a result, the temperature increases higher than the boiling point of water, and steam is compressed.

NB; The temperature is even, all through the entire pot.

Although the steam cooks the food much faster than the average stove-top, the instant pot accumulates the steam pressure until it reaches a relatively high peak.

The safety valve automatically opens to release the right amount of excess pressure. But unfortunately, the pressure leaves the pot through the valve, which produces the hissing sounds you hear.

Is My Instant Pot Supposed To Hiss?

It’s ok to fret a little and panic, but the hissing is a regular feature expected in all pressure cookers, including instant pots.

The instant pot lid is designed to expel internal pressure —when in excess— to a reasonable amount, so your food cooks properly.

As pressure increases, the safety valve opens, aiding the output of excess steam, sometimes facilitated by the rattling of the pot’s lid. This is an everyday experience as long as the instant pot is used for pressure cooking. At every point of the cooking process, this is usually observed.

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Is It Safe For My Instant Pot To Hiss?

Yes. It’s completely safe. The instant pot is meant to hiss. It’s customary to hiss and safe.

However, if the hissing sound persists for a more extended period, there might be an issue that calls for one’s attention. Either the instant pot wasn’t correctly sealed, or there’s damage somewhere.

In both cases, you are advised to get the written guide that came with your instant pot and follow instructions on troubleshooting to identify the problem. You could also check out some related videos on the internet to prep up your knowledge.

Generally, an electric pressure cooker like the instant pot should only rattle or hiss for a brief period. Similarly, it’s expected to be silent and barely noticeable when it sizzles.

This is because electric pressure cookers possess computer chips that retain their temperature and pressure at favorable levels during cooking. In addition, the chips automatically regulate the cooker’s heat system and do not allow it to exceed the slated heat requirement.

Nevertheless, after cooking, the instant pot releases slight hissing noises, as it is about to let out pressure at a fast rate.

Does The Instant Pot Make Noise While Cooking?

Yes. The instant pot is designed to make noises like rattling and hissings while cooking. Not like a hiss in disdain or scorn, just a continuous shhh sound. This is because of the internal pressure buildup accumulated while cooking.

The safety valve on the sealed lid opens up, releasing excess pressure out of the pot to regulate the cooking process. It’s good to pay attention and listen because some hissing noise, like a blaring one, is not expected but indicates a technical issue that needs to be addressed immediately.

What Causes My Instant Pot To Hiss?

The instant pot has the function of a pressure cooker and other parts.

An attribute of every pressure cooker is its ability to withhold pressure in a sealed lid. This pressure aids a quicker cooking process as the temperature rises beyond the boiling point. More like the pressure and temperature of the system work together.

When the pressure accumulated reaches a certain peak, the safety valve on the lid of the pressure cooker opens, allowing for an escape. As the excess steam is released from the pot, it produces the hissing ssshhh sound you hear.

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It’s not going to blow up any time soon, and it’s not exploding either. The instant pot has been tested with numerous safety mechanism that affirms its safe usage. Simple procedures can easily avoid most accidents due to user error.

How To Stop My Instant Pot From Hissing?

Your instant pot hissing only means your food is cooking. Regardless, if it lasts an unusual period, here are a few troubleshooting tips to help with that. 

1. Check Properly Before Cooking

If you observe that the pot makes continuous hissing sounds, it possibly leaks around the top seal. It could also be that you forgot to seal up the pressure valve before cooking, or you only sealed it partly. This usually occurs mainly when you’re carried away with so many things or even glued to the TV.

Ensure the lids are properly sealed, and the valves are firmly secured.

Be sure to check for any further damages to the seal. Confirm the seal isn’t cracked, torn, or broken in any way. So you must be very vigilant and cautious.

Handy Tips: Other clues aside from hissing sounds, in this case, would be the instant pot takes an extended time to attain high pressures. Since a significant portion of accumulated steam is being released through the opened lid or unsealed valve, it also slows the process of cooking.

2. Add Substantial Liquid to Your Instant Pot

To ensure your instant pot performs optimally, it’s essential to consider adding sufficient liquid to your cooking. For example, a few dishes and recipes would require more fluid than usual in your instant pot.

A pressure cooker uses steam to create pressure that eventually cooks the food. The inner pot should have at least one to a half cups of liquid to make this pressure.

If the outcome after cooking results in a dish that is too runny or thin, a good remedy is to use the Sauté function,  so the liquid reduces, and the food thickens. Alternatively, you can also use items that serve thickeners, such as flour, cornstarch, and potato flakes.

Handy Tips: Use other liquids aside from water to add flavor. E.g., You desire a vanilla taste, rather than just putting a vanilla spice into the pot, you could put the spice into a separate bowl, then add a little water/liquid and stir before turning it into the instant pot.

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3. Careful With The Temperature

Reducing the heat on the stove-top heaters will help stabilize the pressure cooker although, this may take more time on an electric cooker. Unlike a regular pressure cooker, an electric cooker takes more time to decrease temperature and cool off its elements.

If your instant pot hisses more frequently than usual, you should use more than one heating element (preferably two) anytime you cook. This way, one heating element will help induce pressure in the cooker while the other helps lessen the temperature. You could as well use three for increased effectiveness.

4. Be Sure To Fit The Sealing Ring in Position

While cooking, if you notice a hissing sound coming from steam escaping the corners of the lid, it means the sealing ring might not be positioned appropriately or broken entirely. You can fix this by opening the instant pot and adjusting the sealing ring till it’s properly seated and there’s no visible vacuum.

A little test to confirm: Firstly, try to whirl the ring randomly, then spin the ring around the ring rack. If it swirls around the ring rack with the same effort as that you pushed with, then it’s appropriately placed.

However, if it doesn’t rotate ideally, try to put it in position again, which should help. If you don’t get the expected results initially, continue to whirl the ring around its rack steadily. You would soon discover that it swirled with the same effort you pushed it.


Instant pots are relatively quiet for most of their cooking.

As discussed above, their design permits them to make hissing sounds occasionally, which you don’t need to worry about. Though not excessively. It’s more of a concern when they hiss unusually loud or lengthier. Follow the instructions above to understand the situation better and solve the problem.

Instant pots are especially easy to use and efficient. In addition, they are a fast means of cooking due to their ability to withhold pressure during cooking processes.

So should your instant pot make that little hissing sshhh sound? Yes, it should. However, this should last only a short while and shouldn’t be loud as well.

About Sylvette Brown

Sylvette is a homemaker and is passionate about cooking and other kitchen-related stuff. She also loves to do home improvement related tasks and keeps on writing about food and cookware on her blog. When she is not writing, she keeps herself busy with her 2 little kids. :)