How To Keep Helium Balloons From Deflating

How To Keep Helium Balloons From Deflating: Full Guide

Last Updated on May 23, 2024 by Kimberlee Johnson

Balloons filled with helium are widely favored for decoration purposes at assorted events, including both private festivities and business meetings.

But, these beautiful decorations often deflate and lose their festive flair after a few hours.

Don’t worry – there are a few easy things to ensure your helium balloons will last as long as possible. 

Today, we will discuss how to keep helium balloons from deflating so you can enjoy your special event with decorations that look their best.

7 Simple Tips For Keeping Helium Balloons From Deflating

inflating balloon with helium

1. Avoid Exposure To Direct Sunlight

Direct sunlight should be avoided when trying to keep helium balloons from deflating. 

It is because sunlight can cause the helium inside the balloon to expand, leading to a decrease in air pressure. As a result, the balloon will eventually deflate. 

To prevent this, balloons should be kept away from windows or other areas that receive direct sunlight. 

2. Keep Them Cool

A vital piece of advice to slow down the rate at which helium balloons deflate is to keep them at a cool temperature.

Heat sources like radiators and air conditioning vents [1] are best to keep balloons cool and in a shaded area away from direct sunlight. 

Or you can use a fan and air conditioning to circulate cool air around the balloons. 

Plus, transporting helium balloons in a cool environment, like a car with air conditioning, can help maintain their longevity.

3. Don’t Overinflate

Over-inflating balloons is a recipe for disaster as it can cause them to pop or deflate prematurely. 

It’s important to remember that helium balloons need space to expand as they rise in the air, and overinflating can cause them to burst before they even have a chance to take flight. 

So, resist the urge to overinflate and inflate the balloons to the recommended size. But why do balloons deflate in a cold environment?

4. Use High-Quality Balloons

When it comes to helium balloons, quality is key. High-quality balloons are one of the best ways to ensure they stay inflated for extended periods. 

These balloons are made with thicker and more durable materials, which make them less likely to pop or leak helium. 

Not only do they last longer, but high-quality balloons have a more vibrant and consistent color, which adds a magical touch to any occasion.

“Morality only is eternal. All the rest is balloon and bubble from the cradle to the grave.”

– David McCullough, American Historian

But look for trusted brands and read reviews from other customers to ensure you get the best quality.

Check out these ways to dispose of helium balloons here.

5. Avoid Sharp Objects

Balloons are delicate, and even the slightest prick can cause them to deflate rapidly. 

Hence, keeping sharp objects away from balloons, including sharp edges on furniture [2], scissors, and even jewelry, is important. 

Even a tiny scratch or tear can lead to the helium slowly escaping, causing the balloon to sink before the end of the party.

6. Use Balloon Sealant

If you care about keeping your helium balloons inflated, a balloon sealant can greatly help.

Balloon sealant is a specially designed spray that forms a protective layer over the balloon’s surface, preventing helium from escaping. 

Not only does it help balloons stay afloat for more extended periods, but it can also prevent them from bursting prematurely.

7. Use A Weight

Using weight is a clever way to keep your helium balloons from floating away and deflating. 

Balloon weights are small, decorative objects attached to the balloon’s bottom, providing an anchor to prevent them from flying away. 

These weights come in various designs, from simple and elegant to fun and whimsical, so you can choose one that matches the theme of your event.

Also Read: How Can You Make Air-Filled Balloons Last Longer?

What Temperature Is Optimal For Helium Balloons?

colorful balloons

The optimal temperature for helium balloons is between 72 and 78 degrees Fahrenheit. This temperature range expands the gas, creating enough lift to keep the balloon afloat. 

At temperatures below 65 degrees, the gas inside the balloon becomes too dense to provide enough lift, causing the balloon to sink. 

If the temperature rises above 80 degrees, the gas inside the balloon expands too much, causing the balloon to burst. 

So, remember that the hotter the environment, the less time the helium inside the balloon will last.

Read: What Do Black Balloons Stand For?


How long do helium-filled 12-inch latex balloons last?

Helium-filled 12-inch latex balloons typically last between 8-15 hours. Check out how long mylar balloons last with helium here.

What makes helium balloons sink overnight?

Helium balloons sink overnight because of the cold temperature. 

It means the helium molecules inside them slowly diffuse out of the balloon, making the balloon less buoyant and, therefore, heavier than the air around it.

Find out how long latex balloons will remain inflated here.

How far ahead of time do helium balloons need to be inflated?

Generally, helium balloons should be inflated 1-2 days before the event to ensure they stay afloat for the entire duration.

What is a suitable alternative to Hi-float for balloons? 

Instead of using Hi-Float, you might use a balloon sealer like STP’s “Son of a Gun,” which protects against the chalky oxidations that occur when balloons are exposed to air for an extended period. 

Final Thoughts

Partying up any occasion with helium balloons is a sure way to make people smile. With proper care and maintenance, these balloons can be kept afloat for much longer. 

By following the advice outlined above, you can keep your helium balloons from deflating and ensure your event succeeds. 

So, remember to keep your balloons away from heat, avoid over-inflating them, and use a balloon weight to keep them in place. 

These simple tips guarantee that your helium balloons will stay afloat and brighten your event for weeks.


Kimberlee Johnson
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