Bunn Spray Head Cleaning & Replacement (Speed Brew, Velocity, My Café)

The One Part BUNN Lets You Take Off

On a home Bunn, the sprayhead is almost the only part you're meant to remove. BUNN's manuals say there are no user serviceable parts inside, but they do give a sprayhead procedure: cool the brewer, unscrew the sprayhead by hand, clear the holes with a toothpick and wash it. It's worth doing every 3 months, because a clogged sprayhead is BUNN's first explanation for slow brewing.

The method depends on the machine. A Speed Brew or Velocity Brew needs a 2-hour cool-down, because a full tank of hot water sits behind the sprayhead. The single-cup My Café needs 1 hour, and its sprayhead comes off by turning clockwise, inside a rubber seal that has to go back in a particular way.

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Signs the Sprayhead Needs Attention

• Water left in the pour-in bowl after a brew. BUNN reads that as a clogged sprayhead.
• Brew time creeping past 4 minutes on a Speed Brew or Velocity Brew.
• Water hitting the grounds in one or two streams instead of an even shower.
• The funnel overflowing after someone cleaned the machine. A missing sprayhead causes it, BUNN says.
• On a My Café: water leaking around the sprayhead, or a drawer that's hard to push in.

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What You Need

No screwdrivers or pliers. BUNN's instructions remove the sprayhead with your fingertips on every model.

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Step 1: Switch Off and Let It Cool

⚠️ Safety: on a Speed Brew or Velocity Brew, the sprayhead is the exit from a tank of water held at brewing temperature. BUNN's cool-down before touching it is at least 2 hours.

1. Switch the tank off. That's the side power switch on a Speed Brew, and the vacation switch on a Velocity Brew (on the back of an ST).
2. Unplug the brewer.
3. Wait at least 2 hours. On a My Café, unplug and wait at least 1 hour.

Time: 1-2 hours
Difficulty: Easy

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Step 2: Remove the Sprayhead

Speed Brew and Velocity Brew:

1. Slide the brew funnel out of its rails.
2. Look up into the brewer, above where the funnel sat. The sprayhead is on the end of the sprayhead tube.
3. Unscrew it with your fingertips. If it's crusted on, don't use pliers. Run the vinegar clean in our Bunn descaling guide first, then try again.

My Café MCU:

1. Remove the drawer.
2. Facing the brewer, turn the sprayhead clockwise by hand. The sprayhead and its seal come off together.

That clockwise direction is in BUNN's MCU manual, and it's the reason many owners think a My Café sprayhead is stuck.

Time: 2 minutes
Difficulty: Easy

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Step 3: Flush the Open Tube (Speed Brew and Velocity Brew)

With the sprayhead off, flush out any loose lime sitting at the end of the tube before you clean the sprayhead itself.

1. Slide the brew funnel back into the rails.
2. Put the empty carafe under the funnel.
3. Pour a carafe of fresh water into the pour-in bowl with the lid open.
4. Close the lid so the water runs through the open tube.

If the brew had been slowing gradually, this is also the moment for the deliming tool. Insert all but two inches of it into the sprayhead tube and slide it in and out five or six times, then flush again. BUNN warns that different models use different deliming tools, so use the one that came with your brewer.

Time: 10 minutes
Difficulty: Easy

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Step 4: Clean the Sprayhead

1. Push a toothpick through every hole, from both sides.
2. Wash the sprayhead with a cloth and dish soap (mild detergent on a My Café).
3. Rinse it, and hold it up to the light. Every hole should be open.

Use a toothpick, not a pin or a drill bit. The holes set the spray pattern and the flow, so making them bigger changes how the brewer brews.

Time: 5 minutes
Difficulty: Easy

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Step 5: Refit and Test

Speed Brew and Velocity Brew:

1. Screw the sprayhead back on, finger tight.
2. Plug in and switch the tank on.
3. Wait 15 minutes for the tank to reheat before brewing.

My Café MCU:

1. If the sprayhead and seal separated, put them back together first. The seal's top has rough ridges and its bottom is smooth. The sprayhead's top has a star pattern and the threaded hole.
2. Guide the sprayhead into the seal's channel, gently stretching the seal if needed. It should slide in easily with no buckles in the seal.
3. Check the seal's bottom lip is visible and not hidden behind the sprayhead.
4. Refit it by turning counter-clockwise until finger tight, then replace the drawer and plug in.

⚠️ Safety: BUNN warns that a wrongly assembled My Café sprayhead and seal can let out scalding water. Don't skip the check in step 3.

Time: 5 minutes, plus the 15-minute reheat on a Speed Brew or Velocity Brew
Difficulty: Easy

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How Models Differ

For the Phase Brew and Heat N Brew, follow the cleaning pages in your own manual. Both include taking the sprayhead off, and our Phase Brew guide covers their cleaning cycles.

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When to Replace Instead of Clean

BUNN's manuals mention three replacement situations. None of them gives a part number. You order through BUNN, so have your model and date code ready.

• A damaged My Café seal. If the sprayhead seal is cracked, torn or holed, the MCU manual says not to use the brewer until you get a replacement seal from BUNN Customer Service.
• A lost or broken deliming tool. BUNN supplies replacements through the parts form at bunn.com/home-products/parts-form, or by phone.
• A flow restrictor sprayhead. If the funnel keeps overflowing with decaf, a fine grind or soft water, BUNN offers a flow restrictor sprayhead for the Speed Brew, through the same parts form or phone line. It's a different sprayhead, not a repair.

Beyond those, BUNN doesn't list a sprayhead as a wear part. A sprayhead that's clean and intact doesn't need replacing. Online part numbers and "universal" discs aren't from BUNN's home manuals, so confirm any part with BUNN before you buy.

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Troubleshooting the Job

The sprayhead won't unscrew. Lime is holding the thread. Refit the funnel and run the vinegar clean first, then try again once the brewer is cool. On a My Café, check you're turning it clockwise.

The funnel overflows straight after cleaning. Check the sprayhead went back on. Missing sprayheads cause overflow, per BUNN.

My Café leaks around the sprayhead after refitting. The MCU manual lists three causes: a clogged sprayhead, a loose one, or a damaged seal. Re-seat the sprayhead in the seal (Step 5) and tighten it finger tight.

My Café drawer is suddenly hard to push in. Either pressure is still trapped after a brew (wait 10 minutes), or the seal's bottom lip is hidden behind the sprayhead. Refit it so the lip shows.

Still slow with a clean sprayhead. The lime is in the tube or the tank. Run the deliming tool (Step 3) and the full vinegar clean. Our slow brewing guide covers the order.

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When DIY Won't Work

Stop and call BUNN if:

• Water is collecting under the base. BUNN's instruction for leaks is to call, and never disassemble the coffeemaker.
• A My Café seal is damaged. Don't brew until it's replaced.
• The sprayhead tube itself looks cracked or loose. There's nothing inside the housing an owner is meant to repair.

Warranty and support. Three years on a new Speed Brew, Velocity Brew, Phase Brew or Heat N Brew (glass carafe excluded), and two years on a My Café MCU. Both exclude damage from water with a high mineral content. Call 1-800-352-2866 (USA) or 1-800-263-2256 (Canada). The model and date code are etched on the power cord's metal prongs, or printed on the bottom or lower back.

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Keep the Holes Open

• Every 3 months: sprayhead off and cleaned. Twice a month in very hard water (BUNN's Speed Brew guidance).
• Every 3 months: the vinegar clean, which keeps the tube from scaling.
• Keep the deliming tool with the brewer. It's specific to your model.
• Use BUNN filters. The wrong size or porosity backs the funnel up, which looks like a sprayhead fault.
• On a My Café, empty the drawer after each brew and inspect the seal whenever the sprayhead is off.

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FAQ

Which way does a Bunn sprayhead unscrew?

On a My Café MCU, BUNN says to turn it clockwise, facing the brewer, and counter-clockwise to refit. The Speed Brew and Velocity Brew manuals only say to unscrew it with your fingertips, without a direction. Work gently by hand, and descale first if it won't move.

Can I clean the sprayhead without taking it off?

Partly. The vinegar clean runs through the sprayhead, but BUNN's own procedure still removes it and clears each hole with a toothpick, and only that reaches residue lodged in the holes. On the Phase Brew, sprayhead removal is the first step of the deep clean.

Do I need a special tool for the sprayhead?

For the sprayhead itself, no. BUNN's instructions use fingertips and a toothpick. The flexible deliming tool is for the sprayhead tube behind it, and you should use the one supplied with your model.

What is a flow restrictor sprayhead?

It's a BUNN sprayhead that slows the water down, offered for the Speed Brew when decaf, a fine grind or soft water makes the funnel overflow. You order it through BUNN's parts form or phone line. It doesn't fix a clog. It's for brewers whose funnel drains too slowly for the water coming in.

Can I put the sprayhead in the dishwasher?

BUNN doesn't say so for the sprayhead. Its instructions are a cloth and dish soap. The My Café manual lists only the drawers, drip tray and drip tray cover as top-rack dishwasher safe.

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Related Bunn Guides

• Bunn Coffee Maker Brewing Slow?: the full slow-brew diagnosis
• How to Descale a Bunn Coffee Maker: the tank clean that goes with this job
• Bunn Coffee Maker Overflowing?: filters, grinds and missing sprayheads
• Bunn Coffee Maker Leaking Water?: where the manuals file each leak
• Bunn Error Codes and Lights: CLE, CLEAN and the My Café lights

Sources: BUNN Speed Brew Owner's Manual (53883.0002, models GRX/BX/SBS/CSB1/CSB2/BTX/CSB3T); BUNN Speed Brew Owner's Manual (53883.0001A, models BT/CSB/GR/SB); BUNN Velocity Brew 10 Cup Use & Care Manual (43097.0002D01, models NHS/GR/BX/BT/ST); BUNN Phase Brew 8 Cup Use & Care Manual (HT/HG); BUNN Heat N Brew Model HB Use & Care Manual (52774.0000a); BUNN My Café Single Cup Multi-Use Brewer Use & Care Manual (MCU, 43460.0002D).