Are Hydro Flask Dishwashers Safe? 5 Crucial Points to Consider

If you’ve just bought a new Hydro Flask, you want to keep it in the best condition for as long as possible, so are Hydro Flask dishwashers safe? Let’s find out. 

Are Hydro Flask dishwashers safe?
Hydro Flasks have excellent temperature-retention properties and eco-friendly design

Hydro Flasks are the go-to choice for many seeking a sustainable, high-performance water bottle. These vacuum-insulated, stainless steel water bottles have become increasingly popular due to their excellent temperature-retention properties and eco-friendly design. However, one question that often arises is, “Are Hydro Flasks dishwasher safe?”

Unfortunately, the answer to this common question is no. Even though it would be nice to be able to toss your Hydro Flask into the dishwasher, a little bit more personal care is needed.

What Happens If You Put Your Hydro Flask In The Dishwasher?

While you may be tempted to toss your Hydro Flask into the dishwasher with the rest of your dishes, doing so even once can lead to a host of unexpected problems. You might be interested in our explainer on the best materials for coffee cups. 

Tarnished Exterior

The first thing you’ll notice if you wash your Hydro Flask in the dishwasher is the damage to its powder coating. This unique finish not only provides an attractive appearance but also enhances grip and prevents condensation. The high temperatures and harsh detergents used in dishwasher cycles can cause the powder coating to chip, fade, or peel away, leaving your once-pristine water bottle looking worse for wear.

Compromised Insulation

At the heart of every Hydro Flask lies its double-wall vacuum insulation, a feature that allows it to keep your beverages hot or cold for extended periods. This insulation relies on the vacuum seal between the stainless steel walls to prevent heat transfer.

Unfortunately, the heat and pressure of a dishwasher cycle can weaken or damage this seal, reducing the bottle’s insulating capabilities. Over time, this can render your Hydro Flask far less effective at maintaining your drink’s temperature.

The Risk Of Voiding Your Coverage

Hydro Flask offers a generous warranty on its products, demonstrating its commitment to quality and customer satisfaction. However, as alluded to earlier, if you choose to ignore the manufacturer’s care instructions by washing your Hydro Flask in the dishwasher, you may void this warranty. As a result, you could find yourself without recourse if your water bottle suffers damage or defects due to dishwasher cleaning.

Protecting Your Hydro Flask’s Features

Hydro Flask recommends against dishwasher cleaning due to the potential harm it can cause to the bottle’s vacuum seal, double-wall vacuum insulation, and powder coating. These features are integral to the bottle’s ability to retain temperatures and maintain its durability. Dishwashing can compromise these essential features, leading to reduced performance and a shorter lifespan.

Since Hydro Flasks are not dishwasher safe, proper hand washing is essential to preserve their performance and longevity.

Everyday Cleaning

For everyday cleaning, first, rinse your Hydro Flask with warm water. Next, fill it with a mixture of warm soapy water, using a bottle brush to scrub the interior thoroughly. Make sure you reach all corners and crevices.

A young woman's hand was holding a sponge brush to clean the Drinking water bottle.
Fill it with a mixture of warm soapy water, using a bottle brush to scrub the interior thoroughly

Rinse the bottle with warm water, followed by a cold-water rinse to remove any lingering soap residue. Finally, allow the bottle to air dry completely before reusing or storing it.

Deep Cleaning

If your Hydro Flask has become stained or has an unpleasant odor, a deep cleaning may be necessary. One effective method involves using baking soda.

Combine a few tablespoons of baking soda with warm water to form a paste. Use a bottle brush to gently scrub the interior of the bottle with the paste, focusing on the stained or odorous areas. Rinse with warm water, followed by cold water, and allow to air dry.

Cleaning Tablets

Another option is to use cleaning tablets specifically designed for stainless steel water bottles. Be sure to follow the manufacturer’s instructions, which typically involve dissolving the tablets in warm water and allowing the solution to soak in the bottle for a specified duration. After soaking, rinse the bottle well with warm and cold water, then air dry.

Caring For Hydro Flask Lids And Accessories

Different Hydro Flask products come with various lids and accessories, each requiring proper cleaning to ensure they remain hygienic and functional.

Straw Lid Care

To clean the straw lid, first, disassemble it by separating the straw from the lid. Soak the components in warm soapy water for a few minutes, then use a straw brush to clean the inside of the straw and a small brush or cloth to clean the lid’s nooks and crannies. Afterward, rinse the components with cold water and let them air dry.

Hydro Flip Lid And Wide Straw Lid Maintenance

Both the hydro flip lid and the wide straw lid can be cleaned by soaking them in warm soapy water and using a small brush or cloth to clean the nooks and crannies. Rinse the components with cold water and air dry.

Tumbler And Coffee Mug Cleaning

Hydro Flask coffee mugs and tumblers can be cleaned similarly to water bottles. Fill the tumbler or mug with warm soapy water and use a bottle brush or sponge to scrub the interior thoroughly.

Rinse with warm water, followed by cold water, and allow it to air dry. For deep cleaning, you can use the baking soda method or cleaning tablets, as mentioned earlier.

Flex Cap And Standard Mouth Lid Cleaning

To clean these lids, simply soak them in warm soapy water for a few minutes, then use a small brush or cloth to scrub all surfaces. Rinse thoroughly with cold water and let them air dry.

Insulated Water Bottle Sleeve Care

If, like many others, you use a sleeve for your Hydro Flask insulated water bottle, clean it periodically by hand washing it with mild detergent and warm water. Rinse well and air dry.

Make Hand Washing Your Hydro Flask Easier

Given the potential dangers of dishwasher cleaning for your Hydro Flask, it’s clear that hand washing is the safest and most effective option. Here are some ways to make the task of hand washing your Hydro Flask easier:

  • Develop a routine: Make cleaning your Hydro Flask a part of your daily routine, especially if you use it for beverages other than water. Immediately after use, fill it with water to soak or wash it right away. Regular cleaning will help prevent the buildup of grime, bacteria, and odors.
  • Choose the right tools: Invest in a good quality bottle brush designed for stainless steel water bottles. This will ensure effective cleaning without scratching or damaging your Hydro Flask’s interior.
  • Be gentle with your Hydro Flask: When cleaning, always use warm water and mild dish soap. Skip abrasive cleaners, harsh chemicals, or boiling water, as these can damage the bottle’s insulation and finish.
  • Treat your lids with care: Remember to clean the lids and attachments of your Hydro Flask, too. Utilize a gentle brush or cloth to softly cleanse every surface and corner, making sure no dirt or residue is left behind. Some people find that a Q-tip is helpful for this part of the job.

Tips For Maintaining Your Hydro Flask

  1. Clean regularly: To keep your Hydro Flask in optimal condition, clean it regularly, especially after using it for liquids other than water. Regular cleaning prevents buildup and ensures your bottle remains hygienic and free of unpleasant odors.
  2. Avoid extreme heat: Never use boiling or extremely hot water in your Hydro Flask, as it can damage the vacuum seal and insulation.
  3. Store with the lid off: After cleaning and drying your Hydro Flask, store it with the lid off to prevent moisture buildup, which could lead to mold or mildew growth.
  4. Shield from heat sources: To protect the powder coating and insulation, avoid exposing your Hydro Flask to direct sunlight or other heat sources for extended periods.
  5. Regular inspection: Examine your Hydro Flask and its components for signs of wear, damage, or leakage. If you notice any issues, contact Hydro Flask’s customer service to inquire about warranty coverage and possible replacement options.
Woman holding a water bottle
Avoid exposing your Hydro Flask to direct sunlight for extended periods

Hydro Flasks are not dishwasher safe, but proper hand washing techniques and regular maintenance will help ensure that your stainless steel water bottle remains clean, functional, and long-lasting. By adhering to the recommended care instructions, you can enjoy the benefits of your reusable, vacuum-insulated Hydro Flask without worrying about voiding the warranty or compromising its performance.

With the right cleaning practices in place, your Hydro Flask will continue to support your hydration needs, keeping your beverages ice cold or steaming hot, no matter where life takes you. You might also be wondering why are paper coffee cups not recyclable. 


  • Kate S

    Kate has been writing since she was 10 years old, tapping away on an old typewriter in her childhood bedroom. Today, Kate is a seasoned freelance writer with over 10 years of experience writing for print and online media. She’s an avid reader and believes in the power of words to transport readers to new worlds, and inspire and nurture creativity. Kate is also a published author and is currently working on her next project.