SIDEWALK SALE – Ascaso Steel Uno Professional Tank / Reservoir Espresso Machine – boiler
Overview:
The Ascaso Steel Uno Professional is an extraordinary home-model espresso machine. Ascaso has incorporated many improvements in Version 3 over the initial version:
- Increased cup height between portafilter and drip tray to 3.35 inches.
- Lateral removable (from right side) water reservoir allows easy access for refilling and cleaning without moving the machine away from overhead cabinets. The clear reservoir also allows you view the water level from the right side of the machine.
- The cool touch and multi-directional steam wand allows brief handling for moving the wand after steaming milk.
- The rubber protector over the wand allows holding the wand for longer periods of time.
- The steam wand is now made of stainless steel.
- The 325cL brass boiler with nickel plating incorporates a professional grade 3-way solenoid valve.
- The professional-grade 58mm portafilter handle designed with a 10 degree tilt for ergonomic handling.
- There is non-slip grip on portafilter handle.
- Ascaso includes a solid aluminum tamper.
- Highly polished filter baskets with microfine smooth holes provide superior extraction over the old baskets.
Ascaso has even stated the following advantages of the Steel Uno Professional over competing models in similar price ranges, and these include:
- Large size cup warmer (~14.5″ x 10.6″).
- Side rails (rear rail was removed from machines for the USA to provide greater area for cup warmer).
- Exterior body completely made of stainless.
- Boiler over grouphead design allows water to evenly heat grouphead whereas some other models have the boiler offset from the grouphead.
- Steam wand is multi-directional, professional 10mm grade, made in stainless, and includes internal hard plastic lining for cool touch capability and a 1 hole steam tip.
- Ergonomic, no-slip grip, professional grade portafilter assembly.
To enjoy the Ascaso Steel Uno Professional, it is important to run water through the steam wand after every steaming session, to descale the machine every 3-4 months, and to backflush once every 50 espresso extractions. In addition, if a timer is used to power up the machine, it is important to have the coffee, hot water and steam switches in the off position to avoid damage, and it important to place a surge suppressor rated 1080 joules or higher between the machine’s electrical plug and the timer as timers can cause surge damage. The water reservoir should be manually cleaned with non-abrasive dish detergent once every two weeks, and the drip tray should be emptied and cleaned every 3 days or less.
During normal operation, there is approximately a 30-45 second wait time to go from coffee mode to steam mode (after depressing the steam switch). One should always purge the steam wand before steaming/frothing milk. After steaming milk, the user can close the steam valve and depress the steam switch off. After placing a cup under the steam wand, the user can rotate the steam valve/knob to the open position, and the hot water switch must be depressed for the the pump to activate so that the ‘too hot steamed water’ exits through the wand and the temperature of the boiler can be brought down to make additional espresso.
Also, the three way solenoid valve operates to relieve the pressure on the filter basket immediately when you depress the coffee switch to off. This prevents the ‘explosion’ of coffee grounds that is normally found on home espresso machines without three way solenoid valves. The solenoid valve on this machine also assists in creating a dry puck after the extraction (please note there are certain coffees, grinds, and amounts of coffee that will make a wet extracted puck which no three way valve will compensate for). The relieved pressure exits to the drip tray and you will see.
Enjoy the Ascaso Steel Uno Professional preparing your favorite beverages! Espresso, cappuccino, latte, cafe americano, and hot chocolate to name a few!
Features:
- Brushed stainless steel finished body over a black enamel painted steel frame.
- Water reservoir removable from the right SIDE of the machine.
- Nickel-plated brass boiler capacity: ~325cc.
- Brass boiler is located directly over the brass grouphead for superior temperature stability compared to boilers that are offset from the grouphead.
- Ergonomic-styled brass filter handle with plastic grip.
- Slide out drip tray made of plastic for easy cleaning (please note drip tray cover is part of machine). Front portion of pull out drip tray is in brushed stainless steel.
- Four selection switches: power on/off, espresso extracting, hot water, and coffee/steam mode.
- Vent in top rear of machine allow heat near water reservoir to escape.
- Blue lights (left to right) indicate power, heating (on when heating in coffee or steam mode), pump for hot water on, and steam mode (on when machine is in steam mode).
- Three-way solenoid valve allows the immediate removal of the filter handle when the espresso extraction is completed. The three way valve also allows the user to backflush the grouphead.
- Multi-directional steam wand allows the desired angle of the steam wand into the steaming pitcher (recommended size 20 oz or less) on counter or placement over drip tray.
- Passive cup warmer on top with side guard rails (top back rail was removed for the US market).



Patrick F –
“I have had my machine for 3-months. It’s wonderful. Getting the grind, fill, and tamping just right produces an excellent double shot with great crema. Single shots are not as good. With practice, very nice (not excellent) foam can be produced.
With minor quibbles I recommend this machine to anyone looking to spend $700-$800. It comes to temperature quickly; is quiet; switch gear is solid; construction appears excellent. If you are willing to work at it a bit (minor variations in grind, fill, and tamping dramatically change the results), results are very nice.
But, is it necessary to spend this much money? Jim at 1st Line said, based on my expectations, nothing less than this machine was going to perform to my satisfaction. (I had owned a café and used a professional three-station semi-automatic). Plus, there are the fanatics who insist you need to spend at least $2,000 to duplicate commercial machine results. Maybe I’ve answered my own question. But, $700 still seems like a lot for a machine with a pretty straight-forward function.
Machine was packaged well, but still arrived with surface flaws and a dent on the drip tray. Steam wand isn’t as flexible as I would like. Height from group head to drip tray should be an inch more to better accommodate a large cappuccino cup and give more room for steaming. Higher-quality stainless should be used for the drip tray as it scratches very easily. The low-water warning light should any color than the blue of the other lights.
The manual is less than wonderful, the weakest part of the package with errors in fact, and of omission that could be a real issue depending on one’s prior espresso machine experience.
If you have $700-$800 to spend; are using quality freshly-roasted/freshly ground beans; are looking for high-quality coffeehouse-level espresso; and, are willing to be diligent in your preparation, this is a great machine with some minor design issues and a less-than-wonderful manual