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Reviews of the Best Thermos for Coffee
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Reviews of the Best Thermos for Coffee of 2019

Having reviewed a wide variety of thermoses for coffee, we can conclude that the best thermos for coffee in 2019 is the Thermos Stainless King. It can minimize heat transfer by conduction and convection for 24 hours, serve multipurpose uses, and it is very portable.

Best Overall
Thermos Stainless King
4.9 Star Rating
Best For Camping
Stanley Classic Vacuum
4.8 Star Rating
Best Designed
Zojirushi SM Mug
4.7 Star Rating
Best Small
Thermos Vacuum
4.6 Star Rating
Best Large
Thermos 61 Ounce
4.6 Star Rating
Best Stainless
Fijoo Best
4.6 Star Rating
Best For Home
Coffee Carafe Thermos
4.5 Star Rating
Best Thermos Mug
Avito Stainless Steel Mug
4.5 Star Rating
Best For Traveling
Contigo Thermos
4.5 Star Rating
Best Budget Friendly
Vacuum Thermos
4.5 Star Rating

Our Review of the Best Thermos for Coffee of 2019

There are several thermoses for coffee which are suitable for traveling, camping, hiking, or specially designed to be used indoors. In this review, we will take a look at 10 best thermoses for coffee that will give you great value for your money and the important factors you need to consider before buying one.

This top list has been carefully researched and reviewed, so you will find it well researched and in accordance with the latest trends.

Best Overall Thermos for Coffee

Best Overall Thermos for Coffee

Value- 100%
Affordability - 97%
Heat Retention- 97%
Durability- 99%

Thermos Stainless King is the best thermos for coffee because it can keep liquids stored in it hot and cold for 24 hours. This time limit is more than what you’ll get in some Thermos flasks, and the best part is that this claim is true.

Based on the reviews and recommendations of customers who have purchased this product, it is a force to reckon with.

This Thermos has a stainless steel interior and exterior design which helps to retain heat and cold without a feel to the touch on its surface. The bottle does not sweat as well, hence its vacuum is a good insulator that prevents the passage of heat.

Now, it is usually easier to keep cold liquid than maintain the temperature of hot ones, but this is not a problem with this thermos.

This Thermos has a 40-ounce capacity and as such, it is moderately sized. You can travel with it or go camping with it since it promises to preserve your content without leaks or spills. It also comes with a lid-cup allowing you to drink from a stainless steel cup that also prevents air from escaping and entering the vacuum.

There is also a 5-year warranty from the date of purchase of this product for any defects from material or workmanship.

View Main Features / Pros & Cons

Main Features

  • Sweat-proof with cold liquids.
  • Comes with a 5-year warranty.
  • 40-ounce with a 1 to 1/5-litre capacity.
  • Has a stainless steel interior and exterior.
  • Can be poured without moving the stopper.
  • Can keep liquids cold and hot for 24 hours.
  • The lid can be used as an insulated serving cup.
  • Not suitable for storing carbonated drinks or dry ice.
  • Vacuum insulation eliminates convection and temperature change.


  • Made of steel.
  • Can be poured easily.
  • Does not leak or spill.
  • Retains heat for long hours.


  • Quite loud.
  • May lose heat through the neck.
  • Painted version might peel after a while.

Best Coffee Thermos for Camping

Best Coffee Thermos for Camping

Value- 99%
Affordability - 94%
Heat Retention- 98%
Durability- 97%

The Stanley Classic Vacuum Bottle can keep you hydrated and energized throughout the day if you have plans to camp outside in a tent. Suitable for hunting, fishing, and traveling, this Thermos can keep your coffee hot for 32 hours as well as maintain the temperature of cold and iced liquid for 32 hours and 160 hours respectively.

This high level of performance can be attributed to its insulated vacuum that has an unbreakable stainless steel liner. On that account, this building material can minimize heat loss and also ensure that the Thermos does not break before you return from your trip. Moreover, it is fully packed and does not leak or rust.

Stanley Classic Vacuum Bottle also comes with an insulated lid that can also serve as a cup. Thus, you can serve your coffee in it without worrying about it getting cold easily while out of the bottle.

The best part is, you get a lifetime warranty if there are any product defects you encounter on buying this Thermos. This shows that this product has been built with quality material to last.

View Main Features / Pros & Cons

Main Features

  • Offers a lifetime warranty.
  • Weighs 2lb with a 12oz capacity.
  • Rust-proof and naturally BPA-free.
  • Suitable for road trips and the outdoors.
  • Allows easy pouring through the stopper.
  • Has thick outer steel to prevent heat loss by conduction.
  • Comes with an Insulated lid that also serves as an 8oz/236mL cup.
  • Can keep hot or cold liquids for 32 hours and iced liquid for 160 hours.


  • Durable
  • Leak-free and dust-free.
  • Retains heat for long hours.
  • Great Thermos for the outdoors.


  • Heavy
  • Has a narrow opening for pouring water.
  • Cap has plastic which may restrict movement.

Best Designed Thermos for Coffee

Best Designed Thermos for Coffee

Value- 98%
Affordability - 95%
Heat Retention- 95%
Durability- 94%

The Zojirushi SM-KHE48NL Stainless Steel Mug has a unique design that makes it stand out from regular thermos for coffee. In similarities, it comes with interior stainless steel that is able to minimize heat loss from the vacuum.

This insulated vacuum will enable hot and cold liquids to retain maintain their temperature for a long period of time before it finally changes.

Regarding differences, this Thermos tries to offer better heat retention through the neck by providing a tighter fitting lid. It also comes with a safety lock to prevent accidental openings.

As a result, you can place it in a bag and it won’t spill. Its capacity of 16 oz also makes it very slim and small enough to be carried about with ease. You can take it to work, school, or recreational centers.

According to the manufacturer, Zojirushi, this design takes minimal space and as such, does not affect the overall capacity of the product. Moreover, this mug has a wide mouth that allows you to add coffee to it with ease without spilling and also fill it with ice cubed.

If you want a portable thermos that comes with a sleek looking, unique design and does not spill, you may want to give this one a try.

View Main Features / Pros & Cons

Main Features

  • Made with 18/8 stainless steel interior.
  • Has a safety lock to prevent accidental opening
  • Features a wide mouth to accommodate ice cubes.
  • Has a compact design that takes up minimal space.
  • Its flip lid is tightly fitted for better heat retention.


  • Durable
  • Impressive design.
  • Minimizes heat transfer.


  • Small capacity.
  • Rubber replacement is expensive.

Best Small Thermos for Coffee

Best Small Thermos for Coffee

Value- 97%
Affordability - 97%
Heat Retention- 95%
Durability- 93%

Thermos Vacuum Insulated Compact Stainless Steel has a capacity of 16 ounces and comes in a small size. This makes it a very portable Thermos for storing hot and cold beverages.

When it comes to hot liquids, it can help to retain their heat for about 12 hours, while cold liquids can maintain their temperature for about 24 hours.

Although there is a significant disparity in time between both, it is still one of the best options for storing your coffee, especially in a portable Thermos.

In terms of build, it’s interior and exterior are made of steel which makes it durable. For this reason, it is not susceptible to leaks and cracks, and its stainless cup also ensures that heat does not escape through the neck.

This steel insulated vacuum Thermos has been designed to give portability which will aid in carrying it about. If you’ll rather move about and travel with a small Thermos that does not weigh a ton like a large Thermos and still be assured of minimal heat transfer, then you should try this flask.

Also, it preserves the flavor since the steel does not affect it, thereby keeping your coffee hot and fresh for half a day.

View Main Features / Pros & Cons

Main Features

  • Preserves the flavor and freshness of the coffee.
  • Light and compact design for ease of movement.
  • Comes with a twist and pour stopper for serving.
  • Has a stainless steel interior, exterior, and lid cover.
  • Can retain heat and cold for 12 hours and 24 hours respectively.


  • Portable
  • Does not leak.
  • Has a lightweight.
  • Can be drunk directly from.
  • Comes with a serving lid cup.
  • Can preserve heat for long hours.


  • Top rubber may dislodge.
  • Not durable under heavy use.
  • Can rust if not properly maintained.

Best Large Thermos for Coffee

Best Large Thermos for Coffee

Value- 95%
Affordability - 94%
Heat Retention - 95%
Durability- 94%

Thermos 61 Ounce Vacuum Insulated Beverage Bottle is one of the largest and thickest thermoses for coffee you’ll find. Not only limited to this, it is one of the best.

It has a capacity of 61 Oz and due to its level of thickness, it can ensure that heat is not easily transferred to the exterior. As a result, your coffee can still be hot hours after you may have filled it into this flask’s insulated vacuum.

This Thermos is made of Stainless Steel and can be used to store different types of liquids other than coffee. In each case where the liquid is hot or cold, it can maintain its temperature for 24 hours which is long enough to keep you hydrated throughout the day. Thus, it is a better alternative to pre-heating each time you need a drink or remaking a fresh cup of coffee.

Moreover, it holds a promise of keeping its stored content fresh within these hours thereby preventing staleness or extra flavors. In respect to its design, it has a narrow mouth opening that serves as a filling channel for your liquids and may make it easier to drink from.

Since it is thick and made of steel, this heat insulator feels cold to the touch when hot coffee is poured into it, a sign that it is a quality Thermos.

View Main Features / Pros & Cons

Main Features

  • Can be handled with one hand.
  • Suitable for the home and office.
  • Has a heavy and thick build to preserve heat.
  • Has a detachable shoulder strap for portability.
  • Made of an 18/8 stainless steel interior and exterior
  • Has a narrow mouth opening to aid filling and cleaning.
  • Maintains hot and cold liquid temperatures for 24 hours.


  • Durable
  • Does not leak or spill.
  • Minimizes heat loss for hours.
  • Can contain a large volume of liquid.


  • Might rust.
  • The stopper is fragile.
  • Narrow bottle opening makes it harder to wash to the bottom.

Best Stainless Thermos for Coffee

Best Stainless Steel Coffee Thermos

Value- 96%
Affordability - 95%
Heat Retention- 92%
Durability- 92%

Best Stainless Steel Coffee Thermos from Fijoo answers to its name by not only being designed by one of the most durable materials but comes in a moderate size that makes it convenient for you to carry about. As a result, you can enjoy its benefits everywhere you go instead of being limited to a certain location like home or office.

What it does, is to minimize heat transfer through conduction, convection, and radiation by sealing in its contents in an insulated vacuum that can preserve the heat for about 8 hours. Not limited to only hot liquids, you can keep cold liquids in its vacuum and be assured that they will not easily acquire heat for another 24 hours.

This Thermos has a capacity of 17 oz, and it is thick enough for a flask of this range and it is not overly large. Therefore, you can store a few cups of coffee in it which you’ll need to keep yourself energized during the day or at night.

According to its manufacturer, it does not leak, spill, nor sweat and if this holds to be true, you would’ve just found yourself one of the best Thermos out there.

View Main Features / Pros & Cons

Main Features

  • Durable and Eco-friendly.
  • Has a slim and portable size.
  • Uses a screw on top for opening.
  • The stainless lid can serve as a drinking cup.
  • 18/8 inner and exterior stainless steel Thermos.
  • Does not sweat, leak, rust, or have a metallic taste.
  • Insulated Vacuum Layer with a third wall of copper.


  • Durable and portable.
  • Does not add extra flavors
  • Features a copper coating.



  • Small size.
  • Plastic screw cap that may not fit tightly.

Best Coffee Dispenser for Home

Best Coffee Thermos Dispenser for Home

Value- 95%
Affordability - 92%
Heat Retention- 95%
Durability- 97%

Coffee Carafe Thermos is one of the best coffee thermoses for the home because it acts as a dispenser that can fill up to 15 coffee cups. Its large size makes it suitable for the home where the entire family, as well as visitors, may need a coffee sip. If that is the case, it might require brewing of a fresh cup of coffee each time, but this large Thermos takes away the need for that.

Coffee Carafe Thermos is made of stainless steel in its interior and exterior and this build enables its insulated vacuum to preserve hot or cold liquids for about 20 hours. Obviously, this is more than half a day and almost a full day which will require replacing the coffee in its vacuum with a fresher one.

Nevertheless, its content will stay fresh before the day is over until you replace it.

This thermos has a wide surface that permits easy addition of liquid and ice cubes into a vacuum. It does not absorb flavors from drinks, hence cleansing with soap and water will easily dislodge the residue from its vacuum.

The bottom line is, this product allows you to make coffee in a large quantity ahead of time which you can serve at a party, dinner, or other events.

View Main Features / Pros & Cons

Main Features

  • Suitable for the home, office, or school.
  • Keeps liquid hot or cold for about 20 hours.
  • Can hold content that is equivalent to 15 coffee cups.
  • Easily dispenses liquid with a press of the button on top.
  • Made of stainless steel in its interior and exterior parts.
  • Has a wide-mouth top to make it easy to add content especially ice cubes.


  • Durable
  • Very large.
  • Can preserve heat and cold.


  • Not portable.

Best Thermos Coffee Mug

Best Coffee Thermos Mug

Value- 93%
Affordability - 95%
Heat Retention - 92%
Durability- 92%

Avito Stainless Steel Coffee Mugs with Lids is the best thermos coffee mug. This Thermos mug can retain heat for several hours and for this reason, it is a good choice when it comes to the most portable thermos for coffee.

It is easy to hold, handle, and carry about thus, you can make use of it indoors or outdoors without any significant change in its temperature.

This Thermos coffee mug is made of 100% stainless steel in its interior and exterior parts and as a result, it will be able to trap heat within and also prevent loss through radiation. Since you’ll be handling this mug by its body or handle, it has been designed to feel cool to the touch irrespective of the degree of hotness or coldness of the content in its vacuum.

Additionally, the mug does not sweat which would’ve been a thing of concern when cold liquid is placed inside it. It has a thick build which is often associated with a quality Thermos that tends not to lose heat easily.

Furthermore, it has a capacity of 14 ounces which is large enough to save one hot cup of coffee for later. This mug is also durable since it will neither crack nor have rusted Stainless steel.

View Main Features / Pros & Cons

Main Features

  • Cool to the touch.
  • Has a capacity of 14 ounces.
  • The lids are BPA free and without toxins.
  • Made of 100% food grade premium silicone.
  • Made of stainless steel in its interior and exterior.
  • Best washed with the hands and not a dishwasher.
  • Can preserve hot and cold liquid for several hours.
  • The exterior does not sweat when filled with cold liquid.


  • Durable
  • Portable
  • Does not feel hot in the hands.
  • Preserves cold and heat for a while.


  • Can spill.
  • May overflow if overfilled.

Best Coffee Thermos for Traveling

Best Coffee Thermos for Travel

Value- 92%
Affordability - 96%
Heat Retention- 91%
Durability- 92%

Contigo Autoseal West Loop Stainless Steel Travel Mug is the best coffee Thermos for traveling. For starters, it does not leak or spill which is the basic reason you need it in the first place. Due to the nature of roads with turns and corners, you need a Thermos that does not leak into your bag or spill while drinking and this is where this product becomes beneficial.

Contigo Autoseal West Loop Stainless Steel Travel Mug is made of stainless still to allow it minimize heat loss. Consequently, it can retain heat for up to 5 hours and cold for up to 12 hours.

You can find it in capacities such as 16 ounces, 20 ounces, and 24 ounces. By choosing the size that best suits you, you can keep yourself refreshed while traveling.

This thermos can fit into most car cup holders which make it easier for you to use it without having an extra load to fill your hands with.

It can be handled with one hand with the use of the push of a button that can be found on its lid. For these reasons, this product has been built to be as portable as possible, thereby setting it aside from regular thermos for coffee.

View Main Features / Pros & Cons

Main Features

  • 100% BPA-free.
  • Made of stainless steel.
  • Has a leak and spill proof lid.
  • Best maintained by hand washing.
  • Can stay hot for up to 5 hours and cold for up to 12 hours.
  • Features a push a button to enable drinking with one hand.
  • Available in different capacities such as 16 ounces, 20 ounces, and 24 ounces.


  • Portable
  • Does not leak or spill.
  • Retains heat for a while.
  • Range of sizes to choose from.
  • Stylish and modern appearance.


  • Small size.
  • The liquid does not stay hot for long.
  • The mold may form in the lid if not carefully cleaned.

Best Budget-Friendly Thermos for Coffee

Best Budget Thermos for Coffee

Value- 91%
Affordability - 98%
Heat Retention- 90%
Durability- 90%

Vacuum Stainless Steel Bottle Thermos makes it possible to use a Flask to store your coffee without taking a huge chunk out of your wallet. It can retain the heat of liquids placed inside it and also ensure that air is not transferred from or into the vacuum to prevent cooling. For this reason, you can save yourself the extra bucks you would’ve spent buying a few cups of coffee while outdoors.

This affordable Thermos has a durable stainless steel liner in its vacuum and also features an outer shell made of steel. This build allows for better retention of heat that may easily be lost with a glassy or plastic build lining.

It has been pegged to keep the content it holds hot or cold for 6 hours and considering its price and size, this is more than enough since it does not hold large quantities of liquid that may need a longer storage time before exhaustion.

In that regards, Vacuum Stainless Steel Bottle Thermos has a capacity of  12 oz and can contain 350 ml of liquid.

It also features a slim build which translates into portability but with the ability to contain a lesser amount of liquid. That being the case, it is best suited for shorter distances where you might want to replace a thermal mug with a thermos flask

View Main Features / Pros & Cons

Main Features

  • Durable and portable.
  • Has a capacity of 12 oz.
  • Retains heat and cold in the vacuum for 6 hours.
  • Made of stainless steel in its inner and exterior areas.
  • Comes with an insulated lid that also serves as a drinking cup.


  • Inexpensive
  • Made from a durable material.
  • Can be carried about with ease.
  • Heat does not escape from the lid.
  • Preserves heat for a moderate amount of time.


  • Has a thin build.
  • May leak or spill.
  • Hard to clean screw top.
  • Losses heat after a few hours.
  • Cannot hold a large quantity of liquid.

Best Thermos for Coffee Comparison Table

What is the Best Thermos for Coffee?

The best time to enjoy your coffee is while it is still hot and fresh because this will keep you alert and energized throughout the day. Before you can achieve this, you will either have to make a fresh pot of coffee each time or store certain quantities in a thermos flask. In both cases, you will always need to make new coffee every day due to the fact that coffee can get stalled easily, but the latter will ensure this does not happen within a few hours.

A Thermos for storing coffee, milk, beverages, and other liquids in its vacuum can ensure that your drink stays hot or cold for a long period. As a result, you can enjoy your perfect brew at work, school, or while on the go. It is an inexpensive method of keeping your coffee hot for indoors and outdoors activities, while at the same time providing ease of usage.

For the best result, you need a Thermos that can retain heat for at least 8 hours, does not spill or leak, and has a size that is suitable for the environment you are going to use it. Due to the variety of these products, it becomes difficult to find one that meets these criteria. On the other hand, our thermos for coffee buying guide will make it easier for you, while ensuring that the thermos you get is of high quality.

Before we proceed, let’s understand what a thermos is.

What is A Thermos?

First designed by Sir James Dewar in 1892, a Thermos also known as a vacuum flask or Dewar bottle is an insulating container that preserves the coldness or hotness of contents stored in it for a long period. Mostly used to store coffee, tea, cold or hot water, It can maintain its temperature for a few hours before it finally drops or rises.

This is made possible by the nature of their construction where one of two flasks is placed within the other. They are both joined at the brim and separated by a vacuum (Insulator). Between both materials, there is no air to transfer heat and as such, a Thermos can minimize heat transfer due to conduction and convection.

Additionally, to minimize heat loss through radiation, a Thermos is usually coated with silver. If this is not done, the inner flasks will be able to radiate heat towards the contents of the bottle and as a consequence, heat will be able to escape. Conclusively, the vacuum minimizes heat transfer, the tight stopper prevents air from entering or leaving the flask, and the silver lining prevents convection.

The best coffee Thermos is one whose surface does not heat up minutes or hours after the hot coffee has been poured into it.

This is because it has a vacuum and a lid that minimizes the transfer of heat through conduction, convection, and radiation. It can keep your coffee hot and fresh for long hours without leaking through the lid or pouring when shaken.

The best coffee Thermos is also one that has a large diameter and as such, can retain heat or cold temperature for a longer time.

It should also have a steel vacuum which is best for minimizing heat loss, and it is even more suitable for the indoors and outdoors use. Most importantly, this Thermos has a reasonable price tag which in comparison with its features is on par.

Why Should I Get A Thermos?

There are several reasons why you should get a Thermos because this Vacuum flask is extremely beneficial to both children and adults. Due to the fact that they come in different shapes and sizes, they are not limited to use within a certain place or location. It could be in the school, at home or work, camp, or while traveling, here are some reasons why you should get a Thermos:

1. To preserve heat and cold

The main purpose of a Thermos is to minimize heat transfer or loss. That being the case, a Thermos will save you the time required to brew another cup coffee in a cold weather because it can still maintain the original taste of the coffee stored in it. Also, food stored in a good Thermos does not easily get cold therefore, you can keep your food hot and fresh in a Thermos till whenever you need it.

2. To cut cost and save money

If you are a lover of caffeine and can’t go a day without a few cups of coffee, then you need a Thermos. This is because it can preserve heat and it is very portable hence, you can make your coffee and store it there. What this does is save that extra cash you would’ve spent to buy several cups of coffee. You may feel it’s just a few dollars, but add it to your year’s expenditure on only coffee and that might be hundreds of dollars.

3. To prevent dehydration

It is a known fact that we tend to drink more when we have a bottle of water around us. While this may be our brain playing a trick on us, it can help prevent dehydration since you will not have to wait till when you’re thirsty before having a drink. You can go cycling, camping, and running with a Thermos which will prevent dehydration that can lead to muscle cramps, fatigue, dizziness, and headaches.

Features To Consider Before Buying

Before you dish out money to buy a Thermos for coffee you may be unimpressed with, there are certain features you have to put into consideration before settling for one.

This because while they may all have the same principle of operation, each is made of a different material which determines its quality. As a result, how long it’ll minimize heat loss and serve you will be determined by these features.

1. Size

The first thing you’ll have to consider is the size of the Thermos you plan on buying. This must be in relation to where you intend using it.

For instance, do you need a Thermos for home or workplace? School, traveling, or camping? and so on. In the home or office, you’ll definitely need a large Thermos that you can serve several cups of coffee or tea from.

On the other hand, if you plan on going hiking or camping, you’ll need a Thermos that is small and portable in size. This will allow for ease of usage and movement while at the same time keeps you hydrated and refreshed.

Most importantly, the size will determine its price thus, there’s no use paying less for a small Thermos you’ll be using only at home or paying more for a larger Thermos you’ll have difficulty carrying about.

2. Material

Some Thermoses come with a glass vacuum while others come with a metal or steel vacuum and the major difference between both is their durability. A metal vacuum will be able to withstand the impact of hits and falls for a long time without cracking while a glass vacuum will easily crack on contact with hard or sharp objects.

There is also plastic Thermos, but this type can only serve as a food or liquid container since it can’t preserve heat for hours.

Alternatively, a glass or plastic vacuum may be cheaper than a metallic build, but the latter is better. It can retain heat for a longer period but may be quite pricey.

For this reason, you need to determine how much you’re willing to spend for a Thermos because this will help you decide if you should settle for a less expensive material that is not durable or a more expensive and long-lasting material.

3. Heat retention

Sometimes specified by manufacturers, is how long their Thermos will be able to retain heat which is usually from 3 to 24 hours. Although in real-life operation, this retention time might be lesser, it can still give you an idea of how long your coffee or tea will remain hot before it becomes warm.

Additionally, if you do not trust the manufacturer’s claims, you can rely on the reviews and recommendations of customers who have already purchased the Thermos.

Now, depending on the purpose of your purchase, you can determine if the Thermos will serve you well. That is to say, if you want a Thermos that is in the form of a mug which is suitable for going for a walk with, then 3 to 5 hours may be a good buy.

On the other hand, this heat retention time is not suitable for a large Thermos meant for the home or office, since it needs to retain heat for long hours.

4. The Lid

One more feature you have to consider is the lid of the Thermos. Here, the lid or cup must be made of the same material as the body of the Thermos.

This will allow it to prevent heat loss through convection where the passage of air into and from the Thermos is not allowed. As a consequence, the liquid will tend to lose its heat slowly.

Moreover, a Thermos that has this type of lid will be fastened securely thereby avoiding spills when shaken or when it falls. Even with a tight-fitting, it must also be easy to loosen and fit back easily without leaking as is the case of thermoses that use corks as an opening.

With these in mind, the better option for a lid is one that has similar material to the body and is in the form of a screw cap.

5. Warranty

The flask warranty is also of importance especially if you’re going to spend a couple of dollars on a large Thermos that is made of steel. Some Thermos come with one year to five years warranty, and depending on which is a better bargainer for you, you can decide whether you should settle for the flask or not.

Keep in mind that if it has a long warranty, you can assume that it is a product that has been built to last to a certain degree.

Additionally, you can always be on the safe side by being able to return the product if it leaks or does not retain heat to the hours specified by the manufacturer.

What’s more, there are some that do not offer any warranty and as such, you are not covered if problems occur while you’re just trying out the product for the first few days or weeks. On this note, it’d be best to settle for one with a warranty.

How to Choose the Best Thermos

A wide collection of Thermoses means you have a variety of shapes, sizes, and designs to choose from. Although this is a good thing, it also comes with a downside and that is, the difficulty in choosing the best Thermos from this collection.

You may pick one that offers less value than what you paid or be lucky enough to find the right product that does not leak or spill. Now, to ensure that your chosen Thermos is the best buy, keep the following tips in mind.

1. Material

A Thermos may have a plastic, glass, or steel vacuum. Each of these has an advantage over the other and also a disadvantage.

Of all three, the cheapest is a Thermos with a plastic vacuum because its build material cannot retain heat for a long time. Likewise, a glass vacuum is cheaper, easier to clean, and can retain heat longer than plastic but it is the most fragile.

In the same vein, a steel vacuum on a Thermos is the most expensive of the trio, most durable, and has the highest heat-retaining power.

As a result, if you want the best and you’re willing to spend the extra cash for a Thermos that will last for a long time and also keep your coffee hot, then you should settle for a Thermos made of steel.

2. Size

The size will determine the amount of liquid the Thermos can contain. In that regards, you should choose a Thermos based on where you intend using it or taking it to.

If you plan on going for a walk, run, climb, and other outdoor activities, then you need a moderately sized Thermos whose size is comparable to that of a water bottle. A Thermos mug may also be suitable for going on a short walk.

On the other hand, you need a large Thermos at home, office, or for business purposes. This is because they can contain more liquid and can serve a larger number of people from one full fill.

Asides having more than enough content to last you for hours or through the say, it can slow down heat loss thereby maintaining the taste of your coffee.

3. Cost

Buying a Thermos that is more expensive than another may at first translate to it having more value, but this is not entirely true. Nowadays, the price of a product does not always equate its worth and as such, you may pay more for a defective product and pay less for a product that may be more useful to you than the later.

Whichever is the case, the price should not be a major determinant in deciding the best product to buy. The best may either be a cheap product or an expensive one and your ability to ascertain which is better is based on the unbiased reviews and recommendations of customers.

On the other hand, a product will always have negative reviews since human wants are insatiable hence, you need to weigh the good and bad reviews then make a decision.

4. Listen for hollow sounds

To check the quality of the Thermos you have chosen, and ascertain if it has leaks or breakage, you can listen for hollow sounds.

This can be done by placing the opening of the flask near your ear and if a sound is heard, then it does not have leakages in it. On the other hand, if there is no subtle sound, it is most likely a defective product.

Now it may not be a thing of worry if there this defective Thermos has a product warranty since you can always get a replacement.

On the other hand, it’ll be a total loss to you if there was no guarantee of replacement if defective. For this reason, always settle for a Thermos that has a Warranty which will ensure you get a replacement if damage occurs within the stipulated time.


How do i make sure that my thermos is safe?

To ensure your thermos is safe for use, ensure that you clean it properly before and after use. In the case of a stainless steel thermos, you may need a baking soda or vinegar to maintain it and avoid corrosion.

Moreover, you should ensure that is left to dry in a clean place to prevent odor and rusting.

Is it better to select a stainless steel or plastic thermos?

A stainless steel Thermos is more expensive than a plastic thermos, but it can retain heat for several hours. On the other hand, a plastic Thermos cannot retain heat for a long time due to the nature of its material.

For these reasons, it is better to select a stainless steel thermos over a plastic Thermos for your coffee because it minimizes heat transfer.

Is the steel taste of coffee from my thermos normal?

No, it isn’t. This is because Steel is not porous and as a result, it cannot add flavor to your coffee. That being the case, the taste may be as a result of the poor construction of the Thermos or a thermodynamic reaction between the coffee compounds and the metal.

You can easily eliminate this taste by cleaning your Thermos vacuum with a solution of vinegar and water.

What is the best way to clean thermoses?

Thermoses should be cleaned on a regular basis to prevent odor from forming from leftover content. A Steel Thermos can be cleaned by adding vinegar to the flask and shaking vigorously. It can then be rinsed with lukewarm water.

Also, you can clean a glass Thermos by adding warm water and soap, then shaking vigorously. Finally, rinse your Thermos with water after a final wash.

What warranty length is fine for thermoses?

Some Thermoses come with a limited time warranty to cover certain cases in defective products while others have a lifetime warranty.

In either case, a 5 to 10-year warranty is good enough for Thermoses as this is a long time which will ensure that you get good value for your money while the product is free from defects in materials or workmanship.

In conclusion

Our buying guide to the best thermos for coffee ensures that you will no longer have to rely on Thermoses that cannot retain heat for a long period of time.

A list of these outlined products has narrowed down your search to only the best out there and as such, you need to choose the product that suits your need to take advantage of them. Using one of these thermoses to store your coffee at home, school, office, or while traveling, will keep it heated and fresh throughout the day.

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Keep your mouth fresh with our selection of the best mouthwash for gums.

Ann Johnson

Ann Johnson

Ann Johnson is a senior product specialist at The Olive. She has a passion for products (especially beauty and health products) and her spunky Pomeranian, Missy. She is a part time stylist and full time blogger.

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