Ascaso UNO Professional Espresso Machine with PID - Version 4

Ascaso UNO Professional Espresso Machine with PID - Version 4


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Version 4 Changes:

As of April 2015 production, Ascaso is combining the ground/pod system into one. This means no more conversion kits. A new grouphead design, now made with 100% solid brass. There are no internal changes from Version 3.

Key Features:

  • PID temperature programming allows user to change boiler temperature through the use of the digital display/control panel on the front panel of the machine. The display reads out the current temperature of the coffee boiler.
  • 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.


The addition of the PID on this already great machine makes it even more wonderful for the espresso enthusiast! The PID display offers functionality to program the temperature of the boiler. This allows fine tuning of the water temperature to the needs of the particular lend of coffee being consumed. Some coffee blends require a moderate temperature of 195 d C versus others that like 204 d F. The ultimate result that can be found is the wonderful taste in the cup!

This extraordinary home-model espresso machine has incorporated many improvements over its predecessor::

a) There is increased cup height between portafilter spout and drip tray to 3.35 inches
b) The lateral removable water reservoir allows easy access for refill and cleaning without moving moving machine away from overhead cabinets. It also allows you view the water level.
c) The featured cool touch and multi-directional steam wand allows brief handling for moving an internally piping, hot wand.
d) The rubber protector over wand allows holding the wand for longer periods of time (we do not know of any cool touch wand will allow you to hold the wand for more than 5 seconds continuously)
e) The steam wand is made of stainless steel, unlike chrome over brass found on other machines
f) The 325cL brass boiler is plated with nickel and incorporated with a professional grade 3-way solenoid valve
g) The professional-grade 58mm portafilter handle was designed and manufactured with a 10 degree tilt for ergonomic handling
h) The non-slip grip on portafilter handle offers a feel of professionalism in the home
i) A solid aluminum tamper is included with the accessory kit
j) Highly polished filter baskets with micro-fine smooth holes offer superior extractions over standard baskets.

Advantages over competing models in similar price ranges, include

a) Large size cup warmer (~14.5" x 10.6")
b) PID display shows temperature of boiler in Celsius or Fahrenheit
c) Side rails (rear rail was removed from machines for the USA to provide greater area for cup warmer)
d) Exterior body completely made of stainless steel
e) Boiler over grouphead design allows water to evenly heat grouphead which leads to better espresso extractions
f) Steam wand is multi-directional, sizes at 10mm professional grade, is stainless, and includes internal hard plastic lining for cool touch capability and 1 hole steam tip
g) Ergonomic, no-slip grip, professional grade portafilter assembly knocks the socks off of the competition!

The main reason to get this machine is the taste of the espresso in the cup! The PID controller and thermal sensor on the boiler makes it happen at such an affordable price!

Like its predecessor, the version 2 has approximately a 30-45 second wait time to go from coffee mode to steam mode (after depressing the steam switch). After steaming milk, the user can depress the steam switch off. After placing a cup under the steam wand, the user can rotate the steam valve/knob to the on position, and the hot water switch must be depressed for the the pump to activate so that the 'too hot steamed water' exits and the temperature of the boiler can be brought down to make additional espresso. In espresso coffee mode, this machine can make back to back espresso until the reservoir runs out of water.

The professional, three-way solenoid valve relieves 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 help).

Maintenance is simple! Descale once every 3 months to remove the calcium/magnesium build up inside the machine. Backflush once every 50 espresso extractions. Clean the water reservoir once every 2 weeks and the drip tray once every 3 days - each manually with non-abrasive dish-wash detergent. To further protect your investment, plug the machine's electrical plug into a surge suppressor 1080 joules or higher. The surge suppressor should then be plugged directly into the wall outlet or a timer if you have one. In fact, if you do have a timer, make sure the coffee, hot water, and steam switches are in the off position. if these are left in the on position, your machine could potentially be damaged.

Enjoy the Ascaso Steel Uno Professional PID Version 3 espresso machine today in preparing your favorite beverages! Espresso, cappuccino, latte, cafe americano, and hot chocolate to name a few!


  • Measurements: ~11" W (including steam knob) or ~14" with steam wand extended out to side by ~14.0" H (including rail) in rear and ~15" H in front (including rail) by ~11.5" D from back panel to front of inserted drip tray and ~16.5 from back to tip of portafilter handle".
  • Water tank: 2 liters.
  • Body: Brushed stainless steel.
  • Recommended tamper size: 58mm.
  • Weight: ~28.5 lbs.
  • Voltage: 120 volts
  • Power: 1000 watts
  • Pump Pressure: up to 16 bar (only 9 bar is needed to make espresso).
  • PID boiler temperature controller in coffee mode. Steam thermostat controls steam temperature
  • Accessories Included: filter handle with dual spouts, single cup filter basket, double cup filter basket, solid aluminum tamper (57mm), pod filter basket instruction manual and quick start guide.
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Returns Policy
We have a 60 day return policy (Starting November 24th, 2017) on espresso machines and grinders designed for home use (exceptions below). If you return within 30 days, you get a full refund minus shipping costs. If you return after 30 days, you get a store credit. Unlike our competitors – this is a 60 day trial period. Most competitors only allow 30 day returns if the product hasn’t been used. Many competitors will also charge expensive restocking fees if you read the fine print. The customer will receive a refund if the item is returned in like new condition, with all accessories that came with it, with all original, undamaged packaging, clean and packaged according to the specifications we provide. If the product is returned in this condition you will receive a full refund (or store credit if over 30 days) minus all shipping costs. We reserve the right to charge a restocking fee as outlined in our terms and conditions if the product is not returned as specified above.

There are the following exceptions to the 60 day return period: La Cimbali Junior Casa, Vesuvius by Ambient, Quick Mill Andreja Profiles, Vibiemme Double Domobar V4, Rocket R60, Rancilio Epoca, parts, accessories and all products listed under the commercial business section, here For these exceptions all sales are final. See our terms and conditions for additional details.

Free shipping with most orders - you must be located in the lower 48 continuous states and there is a minimum order amount of $29. An exception to this is commercial espresso machines and espresso machines that require shipment on a pallet via Less Than a Truckload. This is sometimes included free, but contact us for details.

In stock items that ship via UPS usually ship within 1 to 2 business days. Heavier products such as commercial espresso machines are shipped via freight truck strapped to a pallet and it generally takes 1 to 3 business days to benchtest and arrange shipment. Transit times depend on the distance being shipped, but this map provides a general idea of shipment times in business days for items shipped via UPS. Freight truck shipment usually takes 3 to 8 business days depending on distance.

35.00 LBS

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IMPORTANT: Water quality is a very important aspect of your espresso machine longevity. Water that is too hard will cause limescale buildup, which is the number one reason for operating problems. Too pure water, such as ultra pure RO water or distilled water can cause the machine to overfill, since the water level probe needs some minerals in the water to detect water. Use softened water that is about 50ppm in hardness. More info

PLEASE NOTE: Most machines and grinders are inspected for damage after being shipped from overseas. This means most boxes will have signs of being opened even though they are brand new products. This is done to ensure that the equipment made the international shipment in good condition and working order.

COMMERCIAL EQUIPMENT NOTE: Most commercial equipment ships on a pallet and has to be bench tested prior to shipment. For this reason, commercial equipment usually ships out three to five business days after the order is received. Some commercial equipment is also special order and/or has limited availability, so please check with us prior to placing an order. Check terms and conditions page for terms relating to commercial equipment.