Overview
The Ascaso Steel DUO PLUS V3 PID Espresso Machine builds on the proven Steel DUO platform with an upgraded collection of brewing, steaming, and workflow features designed for serious home espresso enthusiasts.
Its dual independent thermoblocks allow espresso brewing and milk steaming at the same time, while PID temperature control, programmable pre-infusion, volumetric shot dosing, adjustable brew pressure, and an analog pressure gauge give the user meaningful control over extraction.
The PLUS configuration adds several enthusiast-focused upgrades, including a walnut joystick steam lever, competition shower screen, stainless-steel hot-water tap, upgraded removable drip tray, stainless-steel tamper, two steam tips, and both double-spouted and bottomless walnut-handled portafilters.
With a professional 58mm brewing platform, 67 oz water reservoir, approximately 3:30 warm-up time, and compact 10.5-inch width, the DUO PLUS delivers a sophisticated home-barista workflow without the footprint of a much larger traditional espresso machine.
Key Features
- Dual Independent Thermoblocks — Separate brew and steam heating circuits provide independent temperature control.
- Simultaneous Brewing & Steaming — Pull espresso and texture milk at the same time for a faster workflow.
- Digital PID Temperature Control — Adjust brewing temperature in one-degree increments.
- Programmable Pre-Infusion — Customize the beginning of the extraction cycle before full pressure is applied.
- Programmable Volumetric Dosing — Save single- and double-shot volumes for repeatable everyday brewing.
- Adjustable OPV — Gives the user additional control over brewing pressure.
- Analog Pressure Gauge — Provides visual feedback during extraction.
- Walnut Joystick Steam Lever — Offers fast, intuitive steam activation and complements the machine's walnut portafilter handles.
- Competition Shower Screen — Upgraded AISI 304 stainless-steel screen with integrated membrane is designed for more uniform water distribution.
- Professional 58mm Brewing Platform — Supports a wide range of professional-size baskets and accessories.
- Bottomless Portafilter Included — Provides direct visibility into extraction behavior and puck preparation.
- Double-Spouted Portafilter Included — Offers a traditional espresso workflow and the ability to divide a shot between cups.
- Two Steam Tips Included — Single-hole and three-hole tips support different milk-texturing preferences.
- Dedicated Stainless-Steel Hot-Water Tap — Useful for Americanos, tea, cup preheating, and other hot-water needs.
- Stainless-Steel Tamper Included — Provides a more complete preparation setup out of the box.
- Smooth-Grid Removable Drip Tray — Designed for easier cleaning and drainage.
- 67 oz Water Reservoir — Provides generous capacity for home use.
- Approx. 3:30 Warm-Up — Supplied specifications list approximately 3 minutes 30 seconds to brew-ready status.
- Automatic Shutoff — Supports convenient power management.
- E.S.E. Pod Compatible — Supports E.S.E. pods without additional adaptation.
Why This Product Stands Out
The Steel DUO PLUS is not simply a more powerful version of the standard DUO.
Both machines share the core advantage of dual thermoblocks and simultaneous brewing and steaming.
The PLUS distinguishes itself through the equipment surrounding that platform.
It adds:
- Competition shower screen
- Walnut joystick steam control
- Bottomless portafilter
- Expanded basket selection
- Two steam tips
- Stainless-steel tamper
- Dedicated hot-water tap
- Upgraded removable drip tray
For a home barista who already knows they want to experiment with extraction technique, milk texture, pressure, and puck preparation, these upgrades make the DUO PLUS a more complete package from day one.
Specifications
| Specification | Details |
|---|---|
| Manufacturer | Ascaso |
| Model | Steel DUO PLUS V3 PID |
| Intended Use | Residential / Home Use Only |
| Heating System | Dual Independent Thermoblocks |
| Simultaneous Brew & Steam | Yes |
| Width | 10.5" |
| Depth | 12.5" |
| Depth with Portafilter | Approximately 17" |
| Height | 15" |
| Height with Steam Lever | 16 3/16" |
| Power | 2100W |
| Voltage | 120V |
| Plug Type | NEMA 5-20 |
| Electrical Requirement | 20-Amp Circuit Required |
| Adapter | Included per supplied specifications |
| Cord Length | 50" |
| Programmability | PID, Pre-Infusion, Shot Time / Volumetric Dosing |
| Case Material | Aluminum per supplied specifications |
| Heating Block Material | Stainless Steel-Lined Aluminum |
| Cup Clearance | 3" |
| Reservoir Capacity | 67 oz |
| Solenoid Valve | Yes |
| Cup Warmer | Yes |
| Portafilter Size | 58mm |
| Available Portafilter Styles | Bottomless, E.S.E., Pressurized & Non-Pressurized |
| Approx. Brew Warm-Up | 3 Minutes 30 Seconds |
| Pod Friendly | Yes — Without Adaptation |
| Water Source | Internal Reservoir |
| Auto Shutoff | Yes |
| Auto On | No |
| Pre-Infusion | Yes |
| Water Reservoir Material | Polycarbonate, NSF/FDA Approved for Food Use per supplied specifications |
| Flexible Tube Material | Silicone |
| Flowmeter Body Material | PBT (Arnite) 35% GF, NSF Compliant |
Who This Is For
The Steel DUO PLUS V3 is ideal for serious home baristas who want a compact machine with a more complete enthusiast-oriented feature set.
It is particularly well suited for:
- Espresso enthusiasts upgrading from entry-level machines
- Frequent cappuccino, latte, and flat-white drinkers
- Users who prepare multiple drinks back to back
- Buyers who want simultaneous brewing and steaming
- Home baristas who want PID temperature control
- Users interested in pressure adjustment
- Buyers who want a bottomless portafilter included
- Enthusiasts interested in puck preparation and extraction feedback
- Users who want more control over milk steaming
- Buyers who want a dedicated hot-water outlet
- Customers who prefer a complete accessory package from the beginning
Dual Thermoblock Performance
The DUO PLUS uses two independent thermoblocks.
One supports espresso brewing.
The other supports steam production.
This architecture allows the machine to brew and steam at the same time.
For milk-based drinks, that creates a much more efficient workflow than a single-heating-system machine that must move between brewing and steaming temperatures.
Instead of:
Brew → Transition → Steam
the DUO PLUS allows:
Brew + Steam
This is one of the defining advantages of the Steel DUO platform.
PID Temperature Control
The digital PID system allows temperature adjustment in one-degree increments.
That gives the user greater flexibility when dialing in different coffees and recipes, including:
- Espresso blends
- Light roasts
- Medium roasts
- Darker espresso roasts
- Single-origin coffees
Temperature can be adjusted alongside grind size, dose, yield, pressure, and pre-infusion.
Competition Shower Screen
The DUO PLUS includes an upgraded AISI 304 stainless-steel competition shower screen with integrated membrane.
The shower screen distributes brewing water over the coffee puck.
The upgraded design is intended to improve the uniformity of water distribution during extraction, making it especially relevant for users who pay close attention to puck preparation and consistency.
Walnut Joystick Steam Lever
The PLUS replaces the standard DUO's rotary steam control with a walnut joystick steam lever.
The joystick provides an intuitive manual way to activate steam and gives the machine a more enthusiast-focused workflow.
Its walnut finish also coordinates with the included portafilter handles.
Two Steam Tips
The DUO PLUS includes:
Single-Hole Steam Tip
Offers a more controlled steaming approach.
Three-Hole Steam Tip
Provides an alternative steam pattern for users who prefer a different milk-texturing workflow.
Having both allows the home barista to experiment and select the configuration that best matches their technique.
Dedicated Hot-Water Tap
The stainless-steel hot-water tap makes the DUO PLUS useful for more than straight espresso.
It can support:
- Americanos
- Tea
- Hot cocoa
- Cup preheating
- Other hot-water preparation
For households serving several types of beverages, this can be a meaningful everyday convenience.
Professional 58mm Brewing Platform
The DUO PLUS uses a 58mm professional-style portafilter system.
That opens the door to a broad range of compatible accessories, including:
- Precision baskets
- Tampers
- Dosing funnels
- Distribution tools
- Puck screens
- Bottomless portafilters
- Other 58mm preparation tools
The PLUS already includes both a double-spouted and bottomless portafilter, reducing the need for immediate upgrades.
Included Accessories
This includes:
- 7g basket
- 14g basket
- 18g basket
- 21g basket
- Blind basket
- Stainless-steel tamper
- Double-spouted 58mm portafilter with walnut handle
- Bottomless 58mm portafilter with walnut handle
- Single-hole steam tip
- Three-hole steam tip
- Coffee scoop
Steel DUO PLUS V3 vs. Steel DUO V3
| Feature | Steel DUO PLUS V3 | Steel DUO V3 |
|---|---|---|
| Heating System | Dual Thermoblock | Dual Thermoblock |
| Brew & Steam Simultaneously | Yes | Yes |
| PID | Yes | Yes |
| Portafilter Size | 58mm | 58mm |
| Steam Control | Walnut Joystick Lever | Walnut Rotary Control |
| Competition Shower Screen | Yes | No |
| Bottomless Portafilter Included | Yes | Not Listed |
| Largest Included Basket | 21g | 18g |
| Steam Tips | Single + Three-Hole | Single |
| Tamper | Stainless Steel | Aluminum |
| Dedicated Hot-Water Tap | Yes | Standard Configuration Differs |
| Reservoir | 67 oz | 67 oz |
| Power | 2100W | 2100W |
| Best For | Complete enthusiast setup | Core dual-thermoblock performance |
Choose the Steel DUO V3 if your priority is dual-thermoblock performance and simultaneous brewing and steaming.
Choose the Steel DUO PLUS V3 if you want the upgraded steaming controls, competition shower screen, bottomless portafilter, expanded basket selection, two steam tips, and more complete accessory package.
Dream PID vs. Steel DUO vs. Steel DUO PLUS
| Feature | Dream PID | Steel DUO V3 | Steel DUO PLUS V3 |
|---|---|---|---|
| Heating Architecture | Single Thermoblock | Dual Thermoblock | Dual Thermoblock |
| Simultaneous Brew & Steam | No | Yes | Yes |
| PID | Yes | Yes | Yes |
| Portafilter | 58mm | 58mm | 58mm |
| Reservoir | 43 oz | 67 oz | 67 oz |
| Power | 1100W | 2100W | 2100W |
| Bottomless Portafilter Included | No | Not Listed | Yes |
| Competition Shower Screen | No | No | Yes |
| Walnut Joystick Steam Lever | No | No | Yes |
| Positioning | Compact & design-forward | Dual-heating performance | Upgraded enthusiast platform |
The progression is simple:
Dream PID — Compact design and strong espresso control.
Steel DUO V3 — Adds dual heating and simultaneous brewing and steaming.
Steel DUO PLUS V3 — Adds the premium enthusiast hardware and accessories.
Important Electrical Requirement
The Ascaso Steel DUO PLUS V3 requires an appropriate 20-amp circuit.
Electrical specifications:
120V • 2100W • NEMA 5-20 Plug • 20-Amp Circuit Required
Confirm that the intended installation location has suitable electrical service before ordering.
An adapter is included. An adapter does not increase the electrical capacity of an undersized household circuit.
Consult a qualified electrician if there is any uncertainty about outlet or circuit compatibility.
Residential Use Only
The Steel DUO PLUS V3 is intended for residential use only.
It is not approved for commercial or café environments.
Commercial use may affect warranty coverage and fall outside the manufacturer's intended operating conditions.
For that reason, the DUO PLUS should be marketed as a premium home espresso machine, even though many of its components and controls are professional-style.
Warranty
The warranty includes:
12-Month General Warranty
Coverage against qualifying defects caused by faulty workmanship and materials during domestic use.
5-Year Thermoblock & Group Warranty
Coverage for qualifying thermoblock heating assemblies and groups against defects in workmanship or materials during domestic use.
Coverage remains subject to the manufacturer's complete warranty terms and maintenance requirements.
Care & Maintenance
To support long-term performance:
- Purge and wipe the steam wand after milk use.
- Clean baskets and portafilters regularly.
- Keep the competition shower screen and group clean.
- Empty and wash the drip tray as needed.
- Backflush according to Ascaso's instructions.
- Keep the water reservoir clean.
- Use water that meets Ascaso's recommendations.
- Follow the manufacturer's current cleaning and descaling procedures.
- Keep the hot-water outlet clean.
- Disconnect power and allow the machine to cool before deeper maintenance.
Water chemistry varies, so avoid relying on absolute claims that scale cannot form.
Common Questions
Can the DUO PLUS brew and steam at the same time?
Yes. The dual independent thermoblocks allow simultaneous brewing and steaming.
Does it use two conventional boilers?
No. It uses dual thermoblocks, not two traditional storage boilers.
What is the main difference between the Steel DUO and DUO PLUS?
The PLUS adds upgrades including the walnut joystick steam lever, competition shower screen, bottomless portafilter, expanded basket package, two steam tips, stainless-steel tamper, and dedicated hot-water tap.
Does it have PID temperature control?
Yes.
Can brewing pressure be adjusted?
Yes. It includes an adjustable OPV.
Does it have a pressure gauge?
Yes.
What size portafilter does it use?
58mm.
Is a bottomless portafilter included?
Yes.
What baskets are included?
7g, 14g, 18g, and 21g baskets plus a blind basket.
How many steam tips are included?
Two: single-hole and three-hole.
Does it include a hot-water tap?
Yes.
How large is the reservoir?
67 oz.
What is the approximate warm-up time?
Approximately 3 minutes 30 seconds.
What electrical service is required?
120V, 2100W, NEMA 5-20 plug, and a 20-amp circuit.
Is it approved for commercial use?
No. It is residential-use only.