Draining Water From Your Bunn Coffee Maker

Quick answer

• Empty the water reservoir.
• Use the brew-pause feature to drain the carafe.
• Consider running a brew cycle with no coffee.
• Always unplug before deep cleaning.
• Check your Bunn manual for specific drain procedures.
• Regular draining prevents mineral buildup.

Who this is for

• Bunn coffee maker owners who need to move their machine.
• Anyone performing routine cleaning or maintenance.
• Folks preparing to store their Bunn coffee maker.

What to check first

Brewer type and filter type

Know your Bunn model. Some have a built-in water filter, others don’t. If yours has one, you might need to remove or bypass it for a full drain. Paper filters are standard for most home models.

Water quality and temperature

Use filtered water if possible. Tap water can leave mineral deposits, making draining and descaling more important. Make sure the brewer has cooled down before you start draining. Safety first, always.

Grind size and coffee freshness

This doesn’t directly impact draining, but good coffee makes the whole process worthwhile. Freshly ground beans are key for a great cup. If you’re draining to clean, you’re setting yourself up for better future brews.

Coffee-to-water ratio

For draining, this is less about the ratio and more about getting all the liquid out. If you’re running a cycle to flush, you’ll want to measure your water to ensure a full cycle.

Cleanliness/descale status

If your machine is full of gunk, draining is a good first step before a deep clean. A clean machine drains better and makes better coffee. Don’t skip the descaling.

If your machine is full of gunk, draining is a good first step before a deep clean. A clean machine drains better and makes better coffee. Don’t skip the descaling, and consider using a dedicated coffee maker cleaning solution for the best results.

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Step-by-step (brew workflow)

1. Unplug the brewer.

• What “good” looks like: The brewer is completely inert. No lights, no heat.
• Common mistake: Leaving it plugged in. This is a safety hazard and can lead to accidental activation. Always disconnect power first.

2. Remove the carafe and lid.

• What “good” looks like: The carafe and its lid are free from the brewer.
• Common mistake: Forcing the carafe off. If it’s stuck, check for a brew-pause mechanism or ensure the brew basket isn’t jammed.

3. Locate the water reservoir.

• What “good” looks like: You can clearly see and access the water reservoir opening.
• Common mistake: Not knowing where the reservoir is. It’s usually a large opening at the top, often with a lid.

4. Pour out remaining water from the reservoir.

• What “good” looks like: The reservoir is empty.
• Common mistake: Trying to tip the entire brewer. Use a cup or pitcher to scoop out water if needed, especially if the reservoir is hard to access.

5. Engage the brew-pause feature (if applicable).

• What “good” looks like: The brew-pause lever is depressed, stopping the flow from the brew basket.
• Common mistake: Not knowing your machine has this. It’s a lifesaver for pouring a cup mid-brew, but also useful for draining. Check your manual.

6. Fill the reservoir with fresh water.

• What “good” looks like: The reservoir is filled to the desired level (e.g., the “full” mark).
• Common mistake: Using hot water. Cold or room temperature water is best for most cleaning cycles.

7. Place the empty carafe on the warming plate.

• What “good” looks like: The carafe is correctly positioned under the brew basket.
• Common mistake: Forgetting to put the carafe back. This will make a mess.

8. Start a brew cycle.

• What “good” looks like: Water begins to flow into the carafe.
• Common mistake: Not putting a filter in the brew basket if you’re doing a full flush. It can clog.

9. Allow the cycle to complete.

• What “good” looks like: The brewer finishes its cycle and the carafe is full of water.
• Common mistake: Interrupting the cycle too early. You want to flush as much as possible.

10. Discard the water from the carafe.

• What “good” looks like: The carafe is empty again.
• Common mistake: Re-using this water. It’s just for flushing.

11. Repeat steps 6-10 as needed.

• What “good” looks like: You’ve run enough water through to feel the machine is clear.
• Common mistake: Not running enough cycles. For descaling, multiple cycles are often recommended.

12. Unplug again and allow to air dry.

• What “good” looks like: The brewer is dry and ready for storage or its next use.
• Common mistake: Putting away a wet machine. This can lead to mold or mildew.

Common mistakes (and what happens if you ignore them)

Decision rules (simple if/then)

• If you need to move your Bunn coffee maker, then empty the water reservoir because it makes it lighter and prevents spills.
• If you are performing routine cleaning, then run a water-only brew cycle to flush the system because it removes residual coffee oils.
• If you notice a slow brew time or weak coffee, then check the descaling status because mineral buildup is a common culprit.
• If you are storing your Bunn for an extended period, then ensure it is completely dry before putting it away because moisture can lead to mold.
• If you are unsure about a specific draining procedure, then consult your Bunn owner’s manual because it has model-specific instructions.
• If you are experiencing leaks, then check that the carafe is properly seated and the brew basket is clear because these are common reasons for overflow.
• If you are using a water filter, then check its replacement schedule because a clogged filter can impede water flow and affect taste.
• If you just finished a brew and want to pour a cup before it’s done, then engage the brew-pause feature because this stops the flow temporarily.
• If you are troubleshooting an issue, then always start by unplugging the unit for safety because electrical components can be dangerous.
• If your water tastes off, then consider the freshness of your coffee beans and the cleanliness of your brewer because both significantly impact flavor.
• If you’re draining to deep clean, then remove any removable parts like the brew basket and wash them separately.

FAQ

How often should I drain my Bunn coffee maker?

For regular use, you don’t need to drain it daily. However, if you’re moving it, storing it, or doing a deep clean, emptying the reservoir is key. Running a water-only cycle periodically is good for flushing.

Can I just tip my Bunn coffee maker over to drain it?

No, that’s a bad idea. You risk damaging internal components and making a huge mess. Always use the reservoir opening or specific drain features if your model has them.

What kind of water should I use when draining and brewing?

Filtered water is always best. It reduces mineral buildup, which means less descaling and better-tasting coffee. Tap water can work, but you’ll need to descale more often.

Does draining affect the coffee maker’s warranty?

Generally, no. Draining and routine cleaning are considered normal user maintenance. However, improper draining that causes damage might void certain parts of your warranty. Always follow the manual.

My Bunn seems to be leaking when I drain it. What’s wrong?

Check if the carafe is seated correctly and that the brew basket isn’t clogged. Sometimes a loose seal on the reservoir can also cause leaks. Make sure all parts are properly assembled.

Is it okay to leave water in the reservoir between uses?

For short periods, yes. But if you won’t be using it for a few days, it’s better to empty it to prevent stale water issues or potential bacterial growth.

What’s the difference between draining and descaling?

Draining is simply removing water from the reservoir and carafe. Descaling is a process using a specific solution to remove mineral deposits from inside the brewer. Draining is often a step in the descaling process.

Can I use vinegar to descale my Bunn?

Some older models might have recommended vinegar, but most Bunn manuals today suggest using a commercial descaling solution specifically made for coffee makers. Check your manual to be sure.

What this page does NOT cover (and where to go next)

• Specific descaling solutions and their application. (Check your Bunn manual or manufacturer’s website for recommended products.)
• Troubleshooting electrical malfunctions. (Refer to appliance repair resources or contact Bunn customer support.)
• Replacing internal parts like heating elements or pumps. (This usually requires professional service or advanced DIY skills.)
• Advanced brewing techniques beyond basic operation. (Explore coffee brewing blogs and forums for advanced tips.)
• Comparisons of different Bunn coffee maker models. (Look for product reviews and comparison sites.)