Making Tea in a Coffee Maker: 3 Simple Techniques to Try
Yes, you can make tea in a coffee maker three ways: using a dedicated hot water tap, brewing tea bags in the filter basket, or placing tea bags directly in the carafe. The hot water tap method is the only one that doesn’t risk a coffee-flavored cup or damaging the machine.
Most people ruin their tea by treating a coffee maker like a kettle. They throw a bag in the basket and press brew, then wonder why their Earl Grey tastes like yesterday’s dark roast. The machine isn’t the problem. The process is.
Here are the three methods that work, ranked from best to worst, and exactly what happens inside your machine with each one.
Key Takeaways
- The Bunn CWTF15-APS commercial brewer heats water to 195–205°F (90.6–96.1°C), which is perfect for black tea, while a Keurig K-Elite tops out around 192°F (89°C), better suited for green or white varieties.
- Using the filter basket for tea will permanently flavor the machine’s plastic and silicone parts within a dozen cycles if you don’t descale with vinegar immediately after.
- For machines without a hot water tap, brewing directly into the carafe gives you control over steeping time, but you must remove the basket the second the cycle finishes to avoid over-extraction.
- If you use a coffee maker for tea regularly, descale it monthly instead of every 3–6 months. Tea tannins bind with mineral scale faster than coffee oils alone.
- Never run tea through an espresso machine’s grouphead. Ground tea expands when wet and can completely block the portafilter, stalling the pump.
Why Coffee Makers Aren’t Built for Tea
A coffee maker is a dedicated tool. Its entire design, from the heating element to the spray head, is engineered to extract oils from ground coffee at a specific temperature range and contact time.
Common mistake: Brewing tea in a dirty coffee maker, the residual coffee oils coat the hot water tank and spray arm, and your next three cups of tea will taste like stale coffee no matter how many water-only cycles you run.
The spray head in a drip machine saturates the grounds evenly. Tea doesn’t need that. It needs a steady pour of hot water over the leaves, then separation. The carafe is also a problem. It’s designed to hold coffee for hours on a warming plate, which will stew tea into bitterness in under twenty minutes.
TL;DR: A coffee maker heats and moves water. It doesn’t know or care what’s in the basket. Your job is to adapt its functions to tea’s simpler needs without letting the two worlds contaminate each other.
The Three Methods, Ranked by Taste
You have three paths. One is clean, one is a compromise, and one is a last resort that will change how your machine smells.
| Method | Best For | Biggest Risk |
|---|---|---|
| Hot water tap / bypass | Any machine that has one (Bunn, some Keurigs) | None, if the tap is clean. This is the only method that guarantees zero cross-taste. |
| Brew into carafe | Standard drip makers without a hot water tap | Over-steeping if you forget to remove the basket, leading to bitter, astringent tea. |
| Tea in the filter basket | A machine you no longer care about for coffee | Permanent flavor transfer to plastics and tubes within a dozen uses. |
1. The Hot Water Tap (The Only Good Way)
Many commercial brewers like the Bunn CWTF15-APS and higher-end Keurigs like the K-Elite have a dedicated hot water function. This is a separate circuit that draws water from the same tank but bypasses the coffee grounds path entirely.
You push a button, get water at the right temperature, 195–205°F (90.6–96.1°C) for a Bunn, about 192°F (89°C) for a Keurig, and pour it over your tea in a cup. It’s a kettle with extra steps, but it works.
Why it’s the winner: Zero contact with coffee residues. The water never touches the basket, the spray head, or the coffee-scented carafe. Your tea tastes like tea.
I used a Bunn brewer at a cafe for a year to make tea service alongside espresso. The key was running the hot water tap for five seconds into a dump bucket before filling the customer’s cup, clearing any stagnant water from the line.
The process is simple:
1. Ensure the water reservoir is full.
2. Place your tea bag or infuser in your cup.
3. Run the hot water function for 3-5 seconds into a sink to clear the line.
4. Fill your cup.
5. Let steep, then remove the tea.
If your machine has this function, your search is over.
2. Brewing Directly into the Carafe (The Compromise)
This is the method for a standard 12-cup drip machine with no special features. You use the machine as a water heater and delivery system, but you intercept the tea before it sits on the warming plate.
You place the tea bags or loose leaf in a paper coffee filter in the basket. You run a brew cycle with water only, no coffee. The hot water drips through the tea, into the carafe. The moment the cycle finishes, you lift the basket out of the machine and discard the filter. This stops the steeping.
Why it’s a compromise: The water still passes through the coffee-scented spray head and basket. If your machine isn’t impeccably clean, you’ll get a hint of coffee flavor. The benefit is control. You can steep for exactly the time you want by removing the basket.
Common mistake: Leaving the basket seated after brewing, the residual heat from the warming plate will continue to cook the tea, turning a 3-minute steep into a 10-minute stew. Your tea will be bitter and your carafe will stain.
3. Using the Filter Basket (The Last Resort)
This is the method you see in quick YouTube clips: shoving tea bags into the basket and letting the machine brew like it’s coffee. It’s fast. It’s also how you end up with a machine that forever smells of hibiscus and Earl Grey.
The water soaks the tea in the basket, then drips into the carafe. The tea sits on the warming plate. Every plastic and silicone component the hot, tea-saturated water touches, the basket, the spray head arm, the tank outlet, absorbs the flavor.
Why it’s last on the list: Flavor transfer is permanent without aggressive cleaning. After about a dozen cycles, that faint tea smell in the empty basket won’t come out. And if you switch back to coffee, your first pot will have a weird, floral aftertaste.
If you must go this route, commit this machine to tea. Never use it for coffee again.
What Actually Breaks (And What Doesn’t)
The internet is full of warnings about breaking your machine. Most are overblown. Some are understated.
The heating element doesn’t care. It heats water. Tea minerals are different from coffee oils, but the scaling process is similar. Hard water plus heat equals limescale, whether you’re brewing coffee, tea, or just boiling water.
The real risk is in the tubes and valves. Tea contains tannins, which are astringent plant compounds. In a dirty machine, these tannins can bind with old coffee oils and mineral scale to form a sticky, dark residue that narrows the water pathways. This doesn’t “break” the machine, but it can slow flow rates and require more frequent descaling.
The Keurig K-Elite and similar pod machines have a needle that pierces the K-Cup. Tea leaves can clog this needle if you attempt to grind tea and use it like coffee, don’t do that.
TL;DR: Your coffee maker won’t explode if you make tea in it. The mechanical risk is low. The flavor risk is high and permanent.
The Cleaning Ritual You Can’t Skip
Making tea in a shared machine is a two-step promise: clean before, clean after.
Before the first tea brew: Run a full brew cycle with a 50/50 mix of white vinegar and water through an empty filter basket. Then, run two complete cycles with fresh water to flush the vinegar taste. This strips the coffee oils from the hot water tank and tubes. If you skip this, your tea will taste like coffee.
After every tea brew: Run one more water-only cycle through the machine. This flushes tannins from the heating element and internal lines before they can dry and stick. If you use the machine for both beverages, this post-tea rinse is non-negotiable.
I won’t use a shared office machine for tea unless I’ve seen the vinegar treatment in the last month. The ghost of a thousand stale coffee pods lives in those tubes, and it comes out in the first sip of your chamomile.
If you become a regular tea-in-the-coffee-maker person, your descaling schedule changes. Manufacturers like Keurig recommend descaling every 3-6 months. In a hard water area, with daily tea use, that should move to every month. Tea residues accelerate scale buildup.
| Beverage | Recommended Descaling Frequency (Hard Water) | Why |
|---|---|---|
| Coffee only | Every 3–6 months | Coffee oils and minerals build up slowly. |
| Tea only | Every 2–4 months | Tannins bind with minerals more readily, forming scale faster. |
| Both | Every month | Oils and tannins combine, creating a thicker, stickier scale deposit. |
Frequently Asked Questions
Does tea in a coffee maker taste like coffee?
It will if the machine isn’t scrupulously clean. Coffee oils coat the hot water tank, spray head, and carafe. A single vinegar-water cleaning cycle before you switch reduces the risk, but a hint often remains. The only guaranteed way to avoid coffee taste is using a dedicated hot water tap.
What temperature does a coffee maker heat water to?
It varies by model. Commercial brewers like the Bunn CWTF15-APS heat water to 195–205°F (90.6–96.1°C), ideal for black tea. Home pod machines like the Keurig K-Elite heat to about 192°F (89°C), which is better for green or white tea. Standard drip makers usually fall between 195-205°F.
Can you make iced tea in a coffee maker?
Yes, but don’t use the brewing setting. Use the hot water tap function to dispense water over tea in a pitcher, then add ice. If your machine lacks a tap, brew directly into a heat-safe pitcher (not the carafe) and immediately dilute with cold water or pour over ice to stop the steeping.
Does making tea void the coffee maker’s warranty?
No, but damaging the machine with improper cleaning might. Clogging the system with ground tea or failing to descale regularly are considered misuse. Stick to bagged or loose-leaf tea in a filter, and keep up with maintenance.
Can you use a coffee maker to boil water for tea?
Yes, that’s essentially what the hot water tap function does. If your machine doesn’t have a tap, you can run a water-only brew cycle without anything in the basket. Just be aware the water will pick up any residual coffee flavors present in the machine.
Is a French press better for making tea than a coffee maker?
French press gives you full control over water temperature and steeping time, and it’s easy to clean thoroughly between uses. For loose-leaf tea, it’s a superior method. For bagged tea, a coffee maker’s hot water tap is equally convenient if you keep the machine clean.
Before You Go
You can make tea in a coffee maker. The best method is the hot water tap, if you have one. The compromise is brewing into the carafe and removing the basket immediately. The last resort is using the machine as intended and accepting the permanent flavor swap.
Clean the machine with vinegar before you start. Rinse it with a water cycle after every tea session. And if you’re going to do it regularly, descale monthly. Your machine will work fine. Your tea might even taste good. Just don’t expect it to taste the same as it would from a kettle.
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