Can You Put Hot Water in Glass Blender? Must Know

The short answer is no, you should not put hot water in a glass blender. This is because the sudden change in temperature can cause the glass to crack or shatter, potentially injuring you or damaging your blender. In this article, we will explain why this happens, what are the alternatives, and how to safely blend hot liquids.

Why Does Glass Break When Exposed to Hot Water?

Glass is a material that expands and contracts when heated or cooled. This is known as thermal expansion and contraction. When glass is exposed to a sudden change in temperature, such as pouring hot water into a cold glass blender, the glass experiences thermal shock. This means that different parts of the glass expand or contract at different rates, creating stress and tension within the glass. If the stress is too high, the glass can crack or shatter.

The risk of thermal shock depends on several factors, such as the type and quality of glass, the temperature difference, the speed of heating or cooling, and the shape and size of the glass. Some types of glass, such as borosilicate glass, are more resistant to thermal shock than others, such as soda-lime glass. However, even borosilicate glass can break if the temperature difference is too large or too sudden.

What Are the Alternatives to Using Hot Water in a Glass Blender?

If you need to blend hot liquids, such as soups, sauces, or beverages, you have a few options besides using hot water in a glass blender. These include:

  • Using a metal or plastic blender instead of a glass one. These materials are less prone to thermal shock and can withstand higher temperatures. However, you should still be careful not to overfill the blender or blend at high speeds, as this can create pressure and steam that can cause the lid to pop off or the liquid to splatter.
  • Using an immersion blender instead of a countertop blender. An immersion blender, also known as a hand blender or a stick blender, is a handheld device that you can insert directly into the pot or bowl containing the hot liquid. This way, you avoid transferring the liquid to another container and exposing it to a temperature change. You also have more control over the blending process and can avoid creating too much foam or air bubbles.
  • Using a food processor instead of a blender. A food processor is a kitchen appliance that can chop, slice, shred, grate, and puree food. It has a wider and shallower bowl than a blender, which allows the hot liquid to spread out and cool down faster. It also has a tighter-fitting lid that prevents the liquid from escaping. However, a food processor may not be able to achieve the same smoothness or consistency as a blender, depending on the type and amount of food you are processing.
  • Using cold water instead of hot water. If you only need to add a small amount of water to your blender, you can use cold water instead of hot water. This will reduce the temperature difference and the risk of thermal shock. However, this may affect the taste, texture, or quality of your final product, especially if you are blending something that needs to be served hot.
See also  How Much Is the Ring Alarm System Per Month?

How to Safely Blend Hot Liquids in a Blender?

If you have no other choice but to use hot water in a glass blender, you should follow some safety precautions to minimize the risk of thermal shock and injury. These include:

  • Warming up the glass blender before adding the hot water. You can do this by rinsing the blender jar with warm water or filling it with warm water and letting it sit for a few minutes. This will help the glass to adjust to the temperature change and reduce the stress.
  • Adding the hot water gradually and in small batches. You should not fill the blender more than halfway with hot water, as this can create pressure and steam that can cause the glass to break or the lid to pop off. You should also start with a low speed and increase it gradually, as this will prevent the liquid from splashing or foaming.
  • Holding the lid firmly and covering it with a towel. You should always secure the lid of the blender before turning it on, and hold it down with your hand or a heavy object. You should also cover the lid with a towel or a cloth, as this will protect your hand from the heat and catch any liquid that may escape through the vent or the spout.
  • Letting the blended liquid cool down before pouring it out. You should not pour the hot liquid directly from the blender jar to another container, as this can expose the glass to another temperature change and cause it to crack or shatter. You should let the liquid cool down slightly in the blender jar before transferring it to another container or serving it.
See also  How do you get tough stains out of a washing machine?


Putting hot water in a glass blender is not a good idea, as it can cause the glass to break due to thermal shock. This can result in injury or damage to your blender. You should avoid using hot water in a glass blender and opt for other alternatives, such as using a different type of blender, an immersion blender, a food processor, or cold water. If you have to use hot water in a glass blender, you should follow some safety tips, such as warming up the blender, adding the water gradually, holding the lid firmly, and letting the liquid cool down. By following these guidelines, you can safely blend hot liquids in a blender and enjoy your delicious recipes.