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10 Ways to Keep Coffee Hot: Brilliant and Cheap Methods

Coffee is one of those beverages where the temperature is super important. Hot coffee needs to be HOT, and there is nothing more disappointing than taking a nice sip of coffee in anticipation of warmth and goodness only to be greeted with a cool, tasteless liquid.

Sometimes, though, we’re just in too much of a hurry to be able to sit and enjoy coffee, so we have to space out our enjoyment – which is why there are some really neat ways to keep coffee hot. Here are our 10 favorites. There is no right or wrong way here, so if you have an innovation of your own, please feel free to share in the comments.

Some people may like their coffee cooler, but I prefer it to be halfway between hot and cool. For me, the heat and warmth add a whole dimension of flavor.

keep coffee hot with these 10 methods

10 ways to keep coffee hot(or warm, depending on your preference)

1. Immersion heater

Immersion heaters are really neat devices that you place inside the liquid you wish to warm up, and in a few minutes, you’ll have a piping hot liquid ready to go.

It’s basically a hot water kettle without the kettle – the heating element is portable and you immerse it in the liquid, and then plug it in, let it do its thing until the liquid is hot enough, and you have a warm beverage good to go!

Immersion heaters are actually quite common and there are a lot of defective models out there too, but the way to keep it going as long as possible is:

  • Plug it in after fully immersing the coil in the liquid
  • Leave it in the liquid for a 20-30 seconds after unplugging so the residual heat can dissipate through the liquid

Most immersion heaters run on AC(wall outlet) power so they’re not something you can take in the car, but because they’re so portable, you can easily use them for traveling. You can use this to heat up the water before brewing, too.

2. Mug warmer

This brilliant design is a little heated plate that you just put your mug on and it heats the mug and liquid through conduction and convection. You can power it with a wall outlet up to 110-120V. It’s a super way to keep coffee hot.


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For a desk or kitchen or anywhere at home, it’s brilliant. The continuous heating will make sure you have an evenly heated and consistently warm coffee.

However, a word of warning: don’t let coffee sit on the warmer for too long, as it will eventually cook the coffee more than it should be and the taste will be ruined.

VOBAGA Coffee Mug Warmer&Cup Warmer for Office Desk Use, Electric Beverage Warmer with Three Temperature Settings, Coffee Warmer Plate for Cocoa Tea Water Milk with Auto Shut Off after 4 Hours Feature
  • ☕3-Temperature Settings: Our electric mug warmer can slow down the cooling speed of hot beverage; You can choose the temperature by touching the “Tempering Button” keeps the liquid temperature to 104℉/40℃ or 131℉/55℃ or 149℉/65℃.
  • ☕Automatic Shut Off: This cup warmer with a auto shut off function after working 4 hours. After turning off the coffee warmer, the blue light flashs for a while to remind that the heating plate is still hot.
  • ☕Use Suitable Mugs: use a thin-walled, flat or slightly concave-bottomed mug for the best results. This coffee cup warmer suitable for tableware, stainless steel cup, mug, milk box, glass cup and etc.
  • ☕Safe & Durable: With high-tech materials make the coffee warmer heat-resistant and fire resistant. Life of up to one hundred thousand hours. The spill-proof design avoids damage and makes cleaning a breeze.
  • ☕Best Gift Choice: Beautiful and compact design, keep the beverages warm all day long, it's a great gift for lover, dad, mom, wife, husband and all your loved ones on Valentine's day, Thanksgiving and Christmas, and other special occasions to show you care.

3. Heated Travel Mug

A heated travel mug is a great combination of the mug and heater listed in number two. This brilliant design is a standard coffee travel mug except it has a little plug in it. Plug it in, and the heater turns on and warms up the coffee(or any beverage). It comes with a USB plug and a car adapter.

The brilliance of a heated travel mug is that there is already built-in insulation. So if you pour hot coffee and take it on the go, you may not need to plug it in unless you plan on drinking it after a very long time.

Dual USB & 12V Heated Mug - RED
  • Size: 16 oz., Available in Red
  • Double insulated Stainless Steel Mug
  • Spill proof lid, Soft rubberized finish, Soft grip rugged handle
  • Includes one USB plug for your desktop & one 12V plug for the car
  • Plugs into your USB port or 12V auto adapter… keeps your coffee steaming while you work or drive

4. Car warmer

If you like to get your coffee from your favorite coffee joint, you can keep it warm with this portable car warmer for take out coffee. This is the most spill-proof and car friendly option on this entire list. It can fit into the existing cup holder or also double as a cup holder(though you’ll have to find some place to secure it) and it plugs into the car’s DC outlet.

AutoCafe Take-Out Hot Cup Warmer
  • Safe for disposable cups, similarly-shaped porcelain travel mugs, styrofoam, plastic and metal cups
  • Keeps all beverages hot and tasty
  • Precision temperature heater adjusts output as needed
  • Automatically turns on when cup is inserted and shuts off when cup is removed
  • Wipe clean

5. Classical Thermos

How can we write about keeping beverages hot and forget the good ol’ thermos? Built to keep liquids warm for up to 24 hours, thermoses are the perfect way to keep a lot of coffee warm.

The options we listed above are only for single servings, but you can get a thermos in a variety of sizes(the one below is 40 ounces), so if a lot of people need hot coffee at once, thermoses are your best friend. Plus there is no hassle of electronics or anything.

Thermos Stainless King 40 Ounce Beverage Bottle, Midnight Blue
  • Made with Thermos patented vacuum insulation for maximum temperature retention, hot or cold
  • Designed to keep liquids hot for 24 hours, and cold for 24 hours
  • Durable stainless-steel interior and exterior keep bottle cool to touch with hot liquids and sweat proof with cold liquids
  • Lid doubles as insulated serving cup; twist and pour function allows you to pour without moving the stopper
  • With an ample 40-ounce capacity, the bottle offers plenty of sustenance on the go

6. Cozy

A more traditional way of keeping coffee and other beverages hot is by using a simple cozy. This little insulator will just wrap around your mug and prevent the heat from escaping quite as quickly.

Another neat cozy-related tip is to cover your glass french press in a cozy to keep your coffee hot as it brews.

Cozies are good options for drinking at home and in the office, and they’re also the most inexpensive option of the lot.

The only issue is that you can’t expect to keep your coffee hot for too long, as the cozy will only be able to keep so much heat in.

Thumbs Up! Mugga Mug
  • Quality ceramic mug
  • Removable balaclava (remove before washing)
  • Balaclava keeps drinks hot longer
  • Dishwasher safe
  • Measures 3.15-Inch tall by 3.74-Inch tall by 4.33-Inch wide

7. Using a warm mug

If you just need to keep your coffee hot for a few minutes longer than usual, then you can just warm your mug before filling it with coffee.

This will prevent the coffee from losing heat to the mug itself, so it won’t cool as quickly. This tip is not quite as useful to keep your coffee hot for longer, but it’s a good way to preserve the warmth for a short time.

To warm up your mug, just pop it into the microwave for 30 seconds to one minute. The mug will be hot when you take it out, so be careful. Then just pour your coffee into the mug and enjoy.

Some espresso machines have cup warmers on top where you can place your cup as the machine heats up.

Another way to keep coffee cups warm is to pour boiling water into them and letting it sit until your brew is ready to pour. This is the classical way to warm up a mug.

You can also zap coffee in the microwave for 20 to 30 seconds to warm it up, too.

8. Candle Warmers

These are essentially the same as mug warmers, except they’re meant to be used with scented candles.

However, the principle to keep your coffee hot is the same so you can really use these too if you’re unable to find a mug warmer.

Candle Warmers Etc. Original Candle Warmer, Electric Warming Plate - White
  • IT STARTED WITH THE ORIGINAL - Improving upon the original candle warmer that started it all, the new Original Candle Warmer melts scented candles from the bottom up releasing the candle’s fragrance; It ensures to melt your favorite scented candles and provide your home an aromatic atmoshphere
  • FITS LARGE AND SMALL CANDLES - The new larger hot plate design fits most of your favorite scented candles; Enjoy your favorite scents in different sizes with the Original Candle Warmer
  • SAFE AND SECURE - Eliminates fire hazard, smoke damage, and indoor pollution caused by burning candles indoors; Enjoy a scented home with peace of mind
  • ON AND OFF SWITCH - On/Off switch with light indicator indicates when warmer is on; Because safety is always a priority, this warmer is designed with your protection in mind
  • NO OVERHEATING - Heat vents disperses heat out and away from the warmers base to prevent overheating; No more worrying if you left the device switched on the whole night

9. Heating pad

If all else fails(as in nothing else is available) you may have a heating pad lying around at home or at work. These are usually used to soothe aches and pains but if your ache or pain is a hankering for warm coffee you can use the heating element of the pad and just place a mug of coffee on top of it.

The heating pad will transfer heat into the mug and keep your coffee hot. For a quicker job, try to wrap the sides of the mug with a bit of the heating pad, too. There are some heating pads which are flexible, and you can wrap the mug with it in a makeshift way.

Sunbeam Heating Pad for Fast Pain Relief | X-Large, King XpressHeat, 6 Heat Settings with Auto-Shutoff | Green, 12 x 24 Inch, X-Large
  • SOOTHE ACHES WITH FAST HEAT THERAPY: XpressHeat heats up the pad in 30 seconds (3 times faster than standard heating pads) so you get relief fast. Power: 180 Watts
  • EASY TO USE WITH CONVENIENT FEATURES: Easy-to-operate digital LED controller lets you switch between 6 personalized heat settings; select-hour auto-shutoff feature helps you conserve energy and prevents excessive heating
  • SOFT AND EASY-CARE: Easy-care, machine-washable fabric pad in luxurious microplush offers maximum comfort for daily use. Make sure pad is not folded or bunched up in any area
  • PLENTY OF COVERAGE: King-size pad measures 12" x 24" to cover larger areas that need relief, including spine, legs, and across the shoulders; also features an extra-long 9-foot power cord
  • DURABLE FOR YEARS OF USE: 5-year limited warranty

10. Styrofoam

Finally, the least preferable option – when all else fails – is a styrofoam cup. These are not particularly good for the environment, but they do retain heat very well, so desperate times may have to call for desperate measures.


As I said in the beginning of the post, these are just 10 suggestions – there are numerous ways you can keep coffee hot, but these just happen to be our favorites.

If you have another method you prefer to use please share in the comments!

The important thing, after all, is that everyone has access to hot coffee wherever and whenever they need it!

Frequently Asked Questions

Is there any disadvantage to using a warmer?

If you leave coffee on a warmer for too long, it can overcook the coffee and ruin the taste.

How do you keep coffee warm without electricity?

You can preheat the coffee mug to keep it warm, use a mug cozy, or use a styrofoam cup to retain heat.

How do you keep coffee warm for hours?

The best way to keep coffee warm for hours is to brew into a thermal carafe. These keep the coffee evenly heated, meaning there is less chance for overcooking the coffee.

keep coffee hot pin

Last update on 2020-08-07 / Affiliate links / Images from Amazon Product Advertising API

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About Shabbir

Shabbir is the Chief Caffeine Officer at Coffee In My Veins. When he's not weighing out coffee beans for his next brew, you can find him writing about his passion: coffee.