Best Thermos For Coffee

Best Coffee Thermos to keep coffee hot

After 1 month of tests we found the perfect thermos for keeping coffee hot all day long: the Thermos Stainless King. With its double wall vacuum insulation, coffee stays hot no matter what!

Thermos Stainless Steel King 40 Ounce Beverage Bottle

​Hot coffee is something that most people simply can’t live without. When you feel groggy in the morning, the first thing you probably reach for is a cup of coffee. Unfortunately, coffee will not stay hot for long unless you quickly place it in one of the best thermos for coffee.

​Anyone that has never used a thermos before should know that a thermos simply insulates a container so that any liquid inside stays hot or cold. By not allowing heat to enter or escape, liquid is kept at a desirable temperature for hours before it starts to become room temperature. Even in the middle of winter, a thermos will keep your coffee nice and hot so that you can enjoy a cup long after the coffee was brewed.

​In fact, you can even bring your thermos with you to work and you won’t even need a cup since most double as a cup.

​The Best Thermoses of 2017 on the market




Our Rating

Thermos Stainless King 40-Ounce Beverage Bottle

Thermos Stainless King 40-Ounce Beverage Bottle


Thermos Vacuum Insulated 18-Ounce Hydration Bottle

Thermos Vacuum Insulated 18-Ounce Hydration Bottle


Thermos Travel Companion Stainless-Steel Insulated Bottle

Thermos Travel Companion Stainless-Steel Insulated Bottle


Thermos Stainless King 24 Ounce Drink Bottle

Thermos Stainless King 24 Ounce Drink Bottle


Thermos Stainless King 16 Ounce Compact Bottle

Thermos Stainless King 16 Ounce Compact Bottle


How to Keep Coffee Hot All Day

There are few ways to keep your coffee hot at all times. While there are many tips that can help you, many of them are simply unrealistic for the average person.

​The following methods are known for keeping coffee hot:

Alternative ways of keeping coffee hot
  • Coffee Warmers: A warmer is usually built into the coffee pot and aims to keep coffee warm all day long.
  • Microwave: When coffee gets cold, you can use the microwave to heat it back up.
  • Reheating: Previously brewed coffee can be reheated within the coffee pot.

The problem with all of the above mentioned methods of keeping coffee hot is that they simply do not provide a great taste. Warmers keep coffee warm, not hot, and the other two methods typically leave an undesirable taste.

​Thermoses provide the utmost in heating and ensure that heat doesn’t escape quickly. Through the use of insulated walls, a thermos will be able to remain at a desirable temperature for 10 – 24 hours in most cases.

Best Thermos Technology Explanation

Our Top 3 Best Thermos for Coffee

The pleasure of coffee fades away when a piping hot cup turns into a lukewarm cup of coffee. These are our top 3 picks for the best coffee warmers on the market today.

1. Thermos Stainless King 40-Ounce Beverage Bottle

Thermos Stainless Steel King 40 Ounce Beverage Bottle

Forty ounces of hot coffee is enough to keep anyone awake all day long. This equals 5, 8 ounce cups of coffee that is kept hot for 24 hours thanks to the Thermos Stainless King. With a beautiful exterior and patented heating technology, this Thermos is ready for use right out of the box and far exceeded our expectations.


  • Double insulated wall to keep hot drinks hot, and cold drinks cold
  • 24 hour temperature retention
  • Stainless steel thermos that reduces heat and condensation
  • Lid that works perfectly as a cup
  • 40-ounce holding capacity


  • Users experience an odd taste from the lip when drinking from it

We tested this thermos time and time again and found that it worked flawlessly. Not only is the coffee inside kept at a very hot temperature for days, but you can even keep liquid cold in the thermos as well. With a very aesthetically pleasing look, this thermos is definitely a crowd pleaser and fits well with any décor. We enjoyed our french press coffee even hours after brewing.

​Through our usage, coffee was kept piping hot for hours and there were no major drawbacks. Even cleaning is a breeze. We did hear a little rattle from the handle, and we have read reviews that state the taste of tea was affected when drinking from the lid cup. We did not experience this by any means.

2. Thermos Vacuum Insulated 18-Ounce Hydration Bottle

Thermos Vacuum Insulated 18-Ounce Hydration Bottle

The 18-ounce thermos holds enough tea or coffee for a drive to work and a commute home. For those that drink multiple cups of coffee throughout the day, this may not be the optimal choice for you. However, this model does provide great insulation and will keep your beverages the perfect temperature at all times.


  • Extremely durable and made of stainless steel
  • Comfortable grip
  • Double wall insulation
  • BPA-free
  • Made specifically for water


  • Made for cold drinks
  • Lacks superior liquid capacity

While you can pour coffee into this thermos, this model is meant for keeping drinks cold. Juice or water is recommended and hot liquids do not stay nearly as warm as the previously mentioned King. In fact, this model lacks the cooling power of the King as well. With only a 12 hour temperature retention, this thermos sadly disappointed us.

​For the budget shopper that needs cold water when running or hiking, this is a great thermos. For coffee addicts that want more than 2 cups of coffee throughout the day, this is definitely not the thermos to buy.

​Being BPA-free and stainless steel are two major benefits of this thermos. This is especially true when drinking water and leaving the thermos in the hot sun. For these two reasons, this thermos has to be mentioned in our list.

3. Thermos Travel Companion Stainless-Steel Insulated Bottle

Thermos Stainless-Steel Vacuum Insulated Bottle

The Travel Companion is a great choice that comes in at #3 on our list. While better than the previously reviewed model, the Travel Companion did not seem to keep our coffee as hot as the King. However, we are very picky, and this thermos would probably keep your coffee hot throughout a typical work day.


  • Comes in 16, 26 and 32 ounce sizes
  • Easy to wash
  • Perfect for cold and hot drinks
  • 5-year warranty
  • No-drip pouring
  • BPA-free
  • Keeps drinks hot for 12 hours and cold for 24


  • Non-insulated lid can burn your fingers
  • You need to pre-heat this thermos for best results

We chose the 32-ounce model, but the other sizes are perfect for non-addicted coffee drinkers. There are two minor faults which need to be discussed. The lid is not insulated, so if you pour in coffee and touch the lid, you will burn your fingers. Ouch!

​The other downside is that you need to preheat or cool the thermos before pouring liquid inside for best results. The majority of thermoses on the market seem to suffer from this as well. The cooling and heating worked just as advertised, but our coffee was not as hot as we had liked it be after sitting for 6 hours. It was right on the cusp of hot, but not quite there.

The look and quality of the Travel Companion are outstanding. This is a great choice for anyone wanting to keep liquid hot or cold. Being BPA-free and coming with a 5-year warranty simply makes this one of our top choices that you must have when on the road or working in an office.

How to buy a high-quality Thermos?

We bring Thermos with us every time we go on a picnic, for the skiing or for a walk in the park. Since the thermos can be used for both hot and cold drinks, it can work in winter and summer.

So, how to buy a really reliable thermos for drinks which will serve you faithfully for many years?​



The market of the thermos is full of all kinds of models from different manufacturers. The price range is also striking: you can find very expensive and cheap models. It's no wonder that when you're going to buy an insulated flask, you have a reasonable question: why spend money if you can buy a similar product significantly cheaper?

It is worth noting that when you're buying a thermos, excessive savings are not the best choice. After all, the main thing that is required from this device is the ability to keep the temperature of the liquids for several hours. This ability is provided by high-quality, durable, and wear-resistant materials, modern production equipment, multiple checks for defects. Producing a good-working thermos bottle requires a lot of resources. Therefore, a quality product can not cost too cheap, and a suspiciously low price signals that the thermos flask will certainly disappoint you in using.

Of course, inflated price is also a bad indicator, as a rule, an increased price tag can be seen in cases when the seller uses the 3rd party services and tries to compensate for their costs. This is why we recommend you to check out the average prices on the market before making a purchase and choose a seller who does not raise prices too high. Ideally, you should buy a thermos directly from the manufacturer or an authorized dealer on Amazon.


Thermos on a picnic

Do not buy products of no-name brands. When you prefer the products of a reliable manufacturer with a longstanding reputation in the market, you pay not only for the promoted brand. Serious companies cherish their good name, so they always carry out a thorough check of the quality of their products and provide a guarantee.

If you experience a problem, you can always contact the quality control service, return the money back or get another product as a replacement. If you buy a bright plastic thermos of Chinese production, then no one will give you any guarantees, and the money could simply be thrown away.

That's why Thermos flask is an excellent choice. The cost is quite commensurate with functionality, and the brand has been improving its reputation for many years by the consistently high quality of products and a wide variety of models.


thermos packaging

The package must be strong to protect the thermos from any damage. If the box is heavily crumpled, chances are high that the thermos could be damaged during shipping. Pay attention to the product itself: there should not even be microscopic scratches or dents on the case and the bulb. Any deformations can lead to the destruction of the insulation layer between the surrounding case and the flask, and as a result, the thermos can lose its features almost completely. Also, make sure that the stopper fits snugly, the cap is screwed well, and the liquid from the thermos does not leak under any circumstances.


vacuum flask and thermos inner glass bulb

Choose a thermos with a steel bulb. Some time ago, products with glass bulbs were very popular. But the life has shown that they are not practical and short-lived. A glass flask holds heat or cold as good as the steel one, but it is much easier to damage, and without it, the thermos simply will not function. Stainless steel body and flask - a pledge of a long service.

A good thermos is always useful. You will use it at home and in the wild, it will be an excellent assistant on the journey and rightfully take its place in your favorite travel bag.


​Keeping coffee warm throughout the day is easy with the thermoses we mentioned above. Not only are these models the best we have ever tested, but they are highly rated and affordable too. If you need a hot cup of coffee to keep you awake throughout the day, a high quality thermos is the only option.

You may also be interested in