Overview
Bezzera Unica Single Boiler Espresso Machine
Bezzera offers a wide selection of espresso machines.From the large Matrix DB (dual boiler) to the compact Aria HX (heat exchanger) , they also offer a lever model in the Strega. For espresso lovers that don’t want a large machine, they offer the Unica SBDU (single boiler, dual use).
One of the keys to great espresso is proper temperature. The Unica features PID controls that keep the water in boiler at a set temperature with minimal fluctuation. The classic E61 grouphead,also helps keep the water temperature stable throughout the extraction process. Also it’s large 3 liter water tank will allow to keep making back to back shots with little interruption. For the occassional cappuccino, you have the option to steam by switching the boiler to steam mode through the PID display. Simply hold the “+” button until the display shows “c -> s”. Just remember to switch back to coffee mode using the same process.
Most SBDU machines are built very basic and don’t have many features that the Unica has. One example is the Rancilio Silvia, which doesn’t have PID controls or an E61 grouphead. So if you are an espresso only lover and want the best of the best (in a SBDU), choose the Bezzera Unica.
Videos

Features
- Single boiler machine: Can handle both espresso extractions and steaming functions. To get to steam mode, hold the “+” button on the PID controls until the display shows “c -> s”. Just remember to switch back to coffee mode using the same process.
- PID temperature control: Manages the coffee and steam temperature set by the user.
- The coffee temperature can be programmed between 80° C – 100° C. 93° C is the optimal temperature for medium roasts. For lighter roasts, use hotter temperatures to help extract more flavor. For darker roasts, use cooler temparatures to avoid bitterness.
- The steam temperature can be programmed between 105° C – 120° C. Increasing the temperature will help give you more steaming power.
- Stainless steel body: Polished to a mirror finish.
- E61 grouphead: Hot water circulates from thermosyphon tubes to/from the grouphead and boiler. As a result, this system keeps the grouphead and your portafilter nice and hot. This is a dual-purpose, single-boiler machine that does not have a heat exchanger. The lever next to the grouphead activates a microswitch which turns on the pump to pump water through the coffee grinds.
- Pump pressure gauge: Indicate the brewing pressure during espresso extraction. Below the pump pressure gauge, there is a ‘P’ switch that powers the pump for hot water delivery through the opened steam wand. The ‘O/I’ switch is for powering up the espresso machine. The light in between is the power light.
- Multi-directional steam wand: Allows for more flexibility. In addition, the joystick controls for the steam wand give an instant on / off operation as opposed to knobs that you must turn clockwise/counterclockwise. The control locks to fully open in the up position allowing you to use both hands when steaming.
- Powerful vibratory pump: Rated at 15 bar. Please note that you only need 9 bars for espresso.
- Three-way solenoid valve: Allows quick removal of portafilter after espresso extraction and immediately prepares for the next extraction.
- Over pressure valve (OPV): Adjustable.
- Water tank: Very large and removable.
- Passive cup warmer on the top: Heat from the boiler rises and heats the top panel. Like any other espresso machine, it can take up to two hours to preheat your cups. Therefore, it is better to flash heat the cups from hot water from the grouphead or steam/water wand.
- Accessories included: Single spout portafilter, double spout portafilter, 1-cup filter basket, 2-cup filter basket, blind filter basket, plastic tamper, plastic scoop, grouphead cleaning brush, and instruction manual.
Specifications
| Brand | Bezzera |
|---|---|
| Height (inches) | 15, approximate |
| Width (inches) | 10, approximate |
| Depth (inches) | 17, approximate |
| Weight (pounds) | 41 |
| Wattage (watts) | 1300 |
| Voltage (volts) | 110 |
| Boiler capacity (liters) | 0.5 |
| Portafilter size (mm) | 58 |
| Tank capacity (liters) | 3 |
| Country of manufacture | Milan, Italy |
| Approvals | CE |
Notes
- Drip tray: Normally the included drip tray with the Unica is not drainable. If you wish to do so, you an purchase the drip tray separately (5340510)
General Espresso Machine Notes/Warnings:
- Upon first use (tank/reservoir models): On the initial start-up (or after a long period of non-use), it is important to make sure the pump is removing water from the tank. When the machine is powered on, you will hear the pump running. After 5 seconds, squeeze the in-line hose in the tank (usually the longest hose, has a particle filter attached). if you hear a different sound, this means the pump is working correctly. If not, immediately power down the machine and contact us. For more information, visit this page General Manual Pump Priming.
- Electrical: To avoid electrical damage to this espresso machine which is not considered a manufacturer's defect, please acquire and install a single-outlet surge suppressor rated at 1080 joules or higher. Without the recommended surge suppressor, the espresso machine can be damaged at the power switch, the electronics, the heating element, the pressurstat, or the wiring inside. For more information, visit this page Power Protection.
- Water: To increase the useful life and not damage your espresso machine, please use softened water. Softened water is water without calcium and magnesium, but still has other minerals for espresso extraction. Do not use distilled, purified, or reverse osmosis water as these types of water create oxidation with the metals and cause the same damaging effects as limescale. For more information, visit this page Water Choice.
- Descaling: We do not recommend descaling unless there is an issue with the espresso machine. Too much descaling can eat away at the metals and gaskets inside an espresso machine. As a preventative measure, we recommend using softened water as explained in the bullet point above.
- Backflushing: This procedure of cleaning the grouphead will need to be performed from time to time. For more information, visit this page Espresso Machine Backflush – Why 50?
Support
Parts Diagram
- Please use the parts diagrams provided below to determine the part(s) you need. Then use our search box above to find the part(s) on our website.
Note: These parts diagrams are provided by the manufacturers. We list them on our site for informational purposes only. We do not stock every single part listed nor can we guarantee that every part is available to order. - If uncertain, please go to the equipment model or part product page. Then use the Q&A tab found on that web page to ask your question.
- Lastly, and only if the first 2 options were exhausted, please use our parts inquiry page.
- Our call center does not have the training to handle parts inquiries for over 60,000 different parts items. Asking any questions regarding parts will more than likely result in you being referred to the above steps.
- Please note also that all parts purchases are non-returnable or refundable and do not include technical support, instructions, or warranties as the purchase price of any part does not cover the cost of technical support. Technical support is available for repairing equipment in our shop.
- Sorry, we will only special order a part for a model we carry AND was purchased through our supply chain.
- Since we are unaware of the mechanical, electrical, and/or plumbing expertise of a parts buyer or the tools owned by a parts buyer, we are never able to advise if a self-repair can be performed.
Diagram
| # | SKU |
| 1 | 5964627.01 |
| 2 | 5071733LL |
| 3 | 5340510 |
| 4 | 5963068.03 |
| 5 | 5074476.01SG |
| 6 | 7373009 |
| 7 | 5074621LW |
| 8 | 5074634LW |
| 9 | 7474217 |
| 10 | 5373102.01 |
| 11 | 5073020LW |
| 12 | 7816002 |
| 13 | 7816004 |
| 14 | 5220818 |
| 15 | 7817004 |
| 16 | 7474218 |
| 17 | 7611517 |
| 18 | 5125705 |
| # | SKU |
| 1 | 7479952 |
| 2 | 7479953 |
| 3 | 7479954 |
| 4 | 7479955 |
| 5 | 7479956 |
| 6 | 7479933 |
| 7 | 7479934 |
| 8 | 7479935 |
| 9 | 7479936 |
| 10 | 7479937 |
| 11 | 7479940 |
| 12 | 7493011 |
| 13 | 5267013 |
| 14 | 7812607 |
| 15 | 7479938 |
| 16 | 7479939 |
| 17 | 7479951 |
| 18 | 7479950 |
| 19 | 7479949 |
| 20 | 7371511.01 |
| 21 | 7479931 |
| 22 | 7479947 |
| 23 | 7479948 |
| 24 | 7479946 |
| 25 | 7479942 |
| 26 | 7479957 |
| 27 | 7479943 |
| 28 | 7479944 |
| 29 | 7479945 |
| 30 | 7479960 |
| 31 | 7479961 |
| 32 | 7479941 |
| 33 | 5471022 |
| 34 | 5493039 |
| 35 | 7479967 |
| 36 | 7479968 |
| 37 | 7479969 |
| 38 | 7479970 |
| 39 | 7479971 |
| # | SKU |
| 1 | 5522074 |
| 2 | 7374016 |
| 3 | 7434019 (110V) |
| 7434018 (230/240V) | |
| 4 | 5058405LL |
| 5 | 5191508 |
| 6 | 5222204 |
| 7 | 5053025LW |
| 8 | 7816002 |
| 9 | 7819911 |
| 10 | 7633907 |
| 11 | 7633906 |
| 12 | 7635424.01 |
| 13 | 7614007 |
| 14 | 7614006 |
| 15 | 7551001 (USA, 125V, 15A) |
| 7551003 (USA, 250V, 20A) | |
| 7554001 (English) | |
| 7555001 (Schuko) | |
| 7552001 (Australian) | |
| 7555003 (Switzerland) | |
| 7553001 (Israel) | |
| 16 | 5221875CM |
| 17 | 7633326 |
| 18 | 7372507 |
| 19 | 7633626 |
| 20 | 5191509 |
Reviews
FAQ
Submit Questions for FAQ
Please review the FAQ to confirm the question or topic was not previously covered.
Any followup questions for FAQ should be requested as a separate FAQ submission.
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Hi, can you please let me know how much it would be to replace the E61 group on my Bezzera Unica? and also how much to install the flow control device on the new group?
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Q Hi, can you please let me know how much it would be to replace the E61 group on my Bezzera Unica?...... Read more answer nowAsked on September 2, 2026 11:30 amA
Sorry, there is no pricing or estimates via this forum as prices change. Please use the contact page for a request on pricing. Please include your 1st-line purchase information as well.
Ok, thanks for sending the link. But what if I wanted to replace the E61 group as well? Thx,
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Q Ok, thanks for sending the link. But what if I wanted to replace the E61 group as well? Thx, answer nowAsked on September 1, 2026 3:41 pmA
Usually, a grouphead is rebuilt before it is replaced. We would special order, if needed, a grouphead for those customers who purchase their equipment from 1st-line.
hi, I am considering replacing the e61 group on my buzzer unica, and adding a flow-control device to it. do you guys have the parts to do it? and what would be the price? thx
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Q hi, I am considering replacing the e61 group on my buzzer unica, and adding a flow-control device...... Read more answer nowAsked on September 1, 2026 11:14 amA
This is the Bezzera 5900573 Black Knob Flow Control Kit V1 & V2 (follow the link) - a Bezzera E61 flow control kit that answers your question.
I am looking for the PID for the Bezzera Unica. Part number 7434028.01. Thanks
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Q I am looking for the PID for the Bezzera Unica. Part number 7434028.01. Thanks answer nowAsked on May 5, 2026 1:51 pmA
Unfortunately, we do not have that part in stock.
Could you elaborate a bit more about the potential damage if the OPV changed? Trying to get as much educated as possible.
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Q Could you elaborate a bit more about the potential damage if the OPV changed? Trying to get as mu...... Read more answer nowAsked on January 6, 2026 1:53 pmA
Customers accidentally over tighten the screw or nut and damage the spring or strip the threads on the OPV.
I'm happy to install the flow control kit but would like to know if it would solve the pressure issue instead of changing the OPV?
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Q I'm happy to install the flow control kit but would like to know if it would solve the pressure i...... Read more answer nowAsked on January 6, 2026 1:48 pmA
Yes, this is why we came up with idea of brew pressure profiling via flow control in 2015. So, leave the OPV alone.
I did order the flow control kit. It was supposed to be installed before shipping but arrived in a box, un-installed.
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Q I did order the flow control kit. It was supposed to be installed before shipping but arrived in ...... Read more answer nowAsked on January 6, 2026 1:45 pmA
We explicitly state the flow control kit does not come installed. The reason is that the shipping box is not made for it to be be shipped installed AND then it would damage in transit.
When frothing milk, the milk gets hot too fast before forming the microfoam. Is that related to the OPV pressure too or driven by the steaming temperature? Currently the PID is factory set to 110C
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Q When frothing milk, the milk gets hot too fast before forming the microfoam. Is that related to t...... Read more answer nowAsked on January 6, 2026 1:44 pmA
OPV is pump, not steam. Practice or your milk volume is too low. Or the pitcher is not good.
I have an Unica. The current 12 bar pressure is causing channeling during extraction. I tried grinding courser but then the flow is too fast. The recipe I'm using calls for 16g-17g ground coffee so i started with 16g and went up to 17 but still getting channeling. I watched numerous videos and they all say that best extraction is happening at 9 bars. Any idea why the Unica is factory set to 12 bars?
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Q I have an Unica. The current 12 bar pressure is causing channeling during extraction. I tried gri...... Read more answer nowAsked on January 6, 2026 1:43 pmAChanneling is a grinder issue of mixed fineness of grinds and/or tamp. I have used a machine with 14 bar pressure without channeling. So which grinder are you using?You need to ask Bezzera on the 12 bar. 11-12 is a standard for those customers who use a very fine grind. Also, OPV is not a pump pressure regulator. It only opens when 12 bar is surpassed.
Hello. Do you do maintenance on the Bezzera expresso machines? We have one in our office and need to get it maintained while our office is closed between Christmas and New Years. We are located in Bethlehem, PA and I could easily drop the machine off at your facility instead of shipping it.
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Q Hello. Do you do maintenance on the Bezzera expresso machines? We have one in our office and need...... Read more answer nowAsked on November 14, 2024 11:33 amA
Sorry, at this time, we are only repairing machines that were purchased through 1st-line Equipment.







