Overview
The Ascaso Steel DUO PLUS V3 PID Espresso Machine takes the dual-thermoblock performance of the Steel DUO and builds on it with a more complete enthusiast-focused brewing and steaming package.
Designed and built in Barcelona, the DUO PLUS combines dual independent thermoblocks, PID temperature control, programmable pre-infusion, volumetric shot dosing, adjustable brewing pressure, and simultaneous brewing and steaming with premium upgrades including a walnut joystick steam lever, competition shower screen, dedicated stainless-steel hot-water tap, upgraded drip tray, two steam tips, stainless-steel tamper, and both double-spouted and bottomless walnut-handled portafilters.
The result is a compact home espresso machine designed for the enthusiast who wants more capability out of the box without stepping into a much larger traditional dual-boiler platform.
With a professional 58mm brewing system, 67 oz reservoir, approximately 3:30 brew warm-up, and independent brew and steam heating circuits, the DUO PLUS is built around a fast, controlled home-barista workflow.
For buyers comparing Ascaso's Steel models, the positioning is straightforward:
The Steel DUO delivers the essential dual-thermoblock platform. The Steel DUO PLUS adds the enthusiast-focused hardware and accessories to take that platform further.
Key Features
- Dual Independent Thermoblocks — Separate heating circuits for espresso and steam provide independent control over each function.
- Simultaneous Brewing & Steaming — Pull espresso and texture milk at the same time for a faster milk-drink workflow.
- PID Temperature Control — Digitally displayed temperature control allows adjustment in one-degree increments.
- Independent Brew & Steam Temperature Control — Dedicated heating circuits allow each function to be managed independently.
- Programmable Pre-Infusion — Customize the beginning of the extraction cycle before full brewing pressure is applied.
- Programmable Volumetric Dosing — Save single- and double-shot volumes for greater consistency and convenience.
- Walnut Joystick Steam Lever — Provides quick, intuitive manual control over steam delivery.
- Competition Shower Screen — Upgraded AISI 304 stainless-steel shower screen with integrated membrane is designed for more uniform water distribution across the coffee puck.
- Adjustable OPV — Provides control over brewing pressure when dialing in espresso.
- Analog Pressure Gauge — Monitor pressure during extraction for additional feedback.
- 58mm Professional Brewing Platform — Supports professional-size baskets, portafilters, and preparation accessories.
- Double-Spouted Portafilter Included — Walnut handle combines professional dimensions with Ascaso's distinctive styling.
- Bottomless Portafilter Included — Gives experienced users additional visibility into extraction and puck preparation.
- Two Steam Tips Included — Supplied single-hole and three-hole tips allow the steaming setup to be tailored to user preference.
- Dedicated Stainless-Steel Hot-Water Tap — Convenient for Americanos, tea, other hot-water beverages, and cup preheating.
- Upgraded Stainless-Steel Tamper — Provides a more complete out-of-the-box espresso preparation package.
- Smooth-Grid Removable Drip Tray — Designed for easier drainage, cleaning, and a cleaner overall presentation.
- 67 oz Water Reservoir — Provides generous capacity for everyday home use.
- Approx. 3:30 Brew Warm-Up — Supplied specifications list approximately 3 minutes 30 seconds to brew-ready status.
- Cup Warmer — Integrated upper surface provides space for warming cups.
- Automatic Shutoff — Supports convenient power management.
- E.S.E. Pod Compatible — Supports E.S.E. pods without an adaptation kit.
Why This Product Stands Out
The DUO PLUS isn't simply about adding more features.
It's about refining the parts of the espresso workflow that an enthusiast interacts with every day.
The standard Steel DUO already provides the fundamental performance advantage of dual thermoblocks and simultaneous brewing and steaming.
The PLUS builds on that platform with equipment that gives the user more flexibility and a more complete setup from day one:
- Walnut joystick steam control
- Competition shower screen
- Adjustable brewing pressure
- Bottomless portafilter
- Double-spouted portafilter
- Expanded basket selection
- Single-hole and three-hole steam tips
- Stainless-steel tamper
- Dedicated hot-water tap
- Upgraded removable drip tray
That makes the DUO PLUS particularly compelling for someone who already knows they want to move beyond basic espresso preparation.
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 according to supplied specifications |
| Cord Length | 50" |
| Programmability | PID, Pre-Infusion, Shot Time / Volumetric Dosing |
| Case Material | Aluminum per supplied specification table |
| 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 Ascaso Steel DUO PLUS V3 is designed for serious home espresso enthusiasts who want a compact machine with a more complete set of brewing and steaming tools already included.
It's particularly well suited for:
- Experienced home baristas
- Enthusiasts upgrading from entry-level machines
- Frequent cappuccino, latte, and flat-white drinkers
- Users who regularly prepare multiple drinks
- Buyers who want simultaneous brewing and steaming
- Espresso enthusiasts who want a bottomless portafilter
- Users who value PID temperature control
- Buyers who want adjustable brewing pressure
- Home baristas interested in extraction feedback and puck preparation
- Users who want multiple steam-tip options
- Buyers who want a dedicated hot-water tap
- Customers who prefer a complete enthusiast package from the start
Dual Thermoblock Performance
The DUO PLUS uses two independent thermoblock heating circuits.
One is dedicated to brewing.
The other is dedicated to steaming.
This architecture allows the machine to brew espresso and steam milk simultaneously.
For a household preparing several milk drinks, that can make the workflow significantly more efficient than a single-heating-system machine that must transition between brewing and steaming temperatures.
Instead of:
Brew → Wait → Steam
the DUO PLUS allows:
Brew + Steam
This remains one of the central advantages of the Steel DUO platform.
PID Temperature Control
Digital PID control allows temperature adjustment in one-degree increments.
That provides greater flexibility when dialing in:
- Espresso blends
- Single-origin coffees
- Light roasts
- Medium roasts
- Darker espresso roasts
- Different extraction recipes
Combined with grind size, dose, yield, pressure, and pre-infusion, temperature becomes another controllable variable rather than a fixed machine setting.
Competition Shower Screen
The DUO PLUS includes an upgraded AISI 304 stainless-steel competition shower screen with an integrated membrane.
The shower screen is responsible for distributing brewing water over the coffee puck.
The upgraded design is intended to promote more uniform water distribution during extraction, making it a meaningful addition for users who pay close attention to puck preparation and espresso consistency.
Walnut Joystick Steam Control
One of the DUO PLUS's most visible upgrades is the walnut joystick steam lever.
Rather than the rotary steam knob found on the standard DUO, the joystick provides a different style of manual steam activation.
Its walnut construction also coordinates with the machine's portafilter handles, giving the PLUS a distinctive premium appearance.
Two Steam Tips
The DUO PLUS includes:
Single-Hole Steam Tip
Useful for a more controlled steaming approach.
Three-Hole Steam Tip
Provides an alternative steam-delivery pattern for users who prefer a different milk-texturing workflow.
Including both gives the home barista the ability to experiment and choose the configuration that best suits their technique.
Dedicated Hot-Water Tap
A dedicated stainless-steel hot-water tap expands the machine beyond straight espresso and milk steaming.
It can be useful for:
- Americanos
- Tea
- Hot cocoa preparation
- Cup preheating
- Other hot-water needs around the coffee station
For households making several types of drinks, this can be a surprisingly useful everyday feature.
Professional 58mm Platform
The DUO PLUS uses a 58mm professional-style brewing system.
That gives the user access to a broad ecosystem of espresso equipment, including:
- Precision baskets
- Tampers
- Distribution tools
- Dosing funnels
- Puck screens
- Bottomless portafilters
- Other 58mm accessories
Unlike many machines that require immediate accessory upgrades, the PLUS already includes both double-spouted and bottomless walnut-handled portafilters.
Bottomless Portafilter Included
For an enthusiast, the included bottomless portafilter is more than a visual accessory.
It provides direct visibility beneath the basket during extraction, which can help users evaluate aspects of puck preparation and shot behavior.
It also means the buyer doesn't need to immediately purchase a separate bottomless portafilter to begin experimenting with that workflow.
Included Accessories
The DUO PLUS includes a particularly strong accessory package:
- 7g professional basket
- 14g professional basket
- 18g professional basket
- 21g professional basket
- Blind basket for cleaning/backflushing
- 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
This expanded package is one of the clearest practical differences between the DUO PLUS and the standard DUO.
Steel DUO PLUS V3 vs. Steel DUO V3
| Feature | Steel DUO PLUS V3 | Steel DUO V3 |
|---|---|---|
| Heating System | Dual Thermoblock | Dual Thermoblock |
| Simultaneous Brew & Steam | Yes | Yes |
| PID | Yes | Yes |
| Portafilter Size | 58mm | 58mm |
| Steam Control | Walnut Joystick Lever | Walnut Rotary Knob |
| Shower Screen | Competition Screen | Standard |
| OPV | Adjustable | Adjustable |
| Pressure Gauge | Yes | Yes |
| Bottomless Portafilter Included | Yes | Not Listed |
| Double-Spouted Portafilter | Yes | Yes |
| Largest Included Basket | 21g | 18g |
| Steam Tips Included | Single + Three-Hole | Single |
| Stainless-Steel Tamper | Yes | Aluminum |
| Dedicated Hot-Water Tap | Yes | Standard Configuration Differs |
| Reservoir | 67 oz | 67 oz |
| Power | 2100W | 2100W |
| Positioning | Complete Enthusiast Package | Core Dual-Thermoblock Performance |
The choice is less about basic espresso capability and more about how complete you want the machine to be out of the box.
Choose the Steel DUO V3 if your priority is the fundamental dual-thermoblock brew-and-steam platform.
Choose the Steel DUO PLUS V3 if you want the upgraded steaming controls, competition shower screen, bottomless portafilter, larger basket selection, hot-water tap, and expanded accessory package already included.
Dream PID vs. Steel DUO vs. Steel DUO PLUS
| Feature | Dream PID | Steel DUO V3 | Steel DUO PLUS V3 |
|---|---|---|---|
| Heating System | 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 |
| Joystick Steam Lever | No | No | Yes |
| Best For | Compact, design-forward home espresso | Faster dual-heating workflow | Enthusiast-focused dual-heating setup |
The progression is straightforward:
Dream PID — Compact, distinctive, highly adjustable home espresso.
Steel DUO V3 — Adds dual heating for simultaneous brewing and steaming.
Steel DUO PLUS V3 — Builds on the DUO platform with a more complete enthusiast-focused equipment package.
Important Electrical Requirement
The Steel DUO PLUS V3 requires an appropriate 20-amp electrical circuit.
120V • 2100W • NEMA 5-20 Plug • 20-Amp Circuit Required
Confirm that the intended installation location has appropriate electrical service before ordering.
An adapter is included. An adapter does not increase the electrical capacity of an undersized branch circuit.
If you're uncertain whether your outlet and circuit are suitable, consult a qualified electrician before installation.
Residential Use Only
The Ascaso Steel DUO PLUS V3 is designed for residential use only.
According to the supplied specifications, it is not approved for commercial or café settings.
Commercial operation may fall outside the machine's intended operating conditions and may affect warranty coverage.
Despite its professional-style controls and components, it should therefore be positioned as a premium home espresso machine, not commercial equipment.
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.
Warranty coverage remains subject to Ascaso's complete terms, exclusions, maintenance requirements, and proof-of-purchase provisions.
Care & Maintenance
For long-term performance:
- Purge and wipe the steam wand immediately after milk use.
- Clean the portafilters and baskets regularly.
- Keep the group and competition shower screen clean.
- Empty and clean the drip tray as needed.
- Backflush according to Ascaso's instructions.
- Keep the internal water reservoir clean.
- Use water that meets Ascaso's recommended specifications.
- 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 maintenance should follow Ascaso's current guidance rather than relying on claims that scale cannot develop.
Common Questions
Can the DUO PLUS brew and steam simultaneously?
Yes. Its independent brew and steam thermoblocks allow simultaneous operation.
Does it have two traditional boilers?
No. The DUO PLUS uses dual thermoblocks, not two conventional storage boilers.
What is the main difference between the DUO and DUO PLUS?
Both provide dual-thermoblock performance. The PLUS adds enthusiast-focused upgrades including the walnut joystick steam lever, competition shower screen, bottomless portafilter, expanded basket selection, two steam tips, stainless-steel tamper, dedicated hot-water tap, and upgraded drip tray.
Does it have PID temperature control?
Yes.
Can brewing pressure be adjusted?
Yes. The machine includes an adjustable OPV.
Does it have a pressure gauge?
Yes.
What size portafilter does it use?
A professional-style 58mm portafilter.
Is a bottomless portafilter included?
Yes. Both a bottomless and double-spouted walnut-handled portafilter are included.
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 have a dedicated hot-water tap?
Yes.
How large is the water reservoir?
Approximately 67 ounces.
How quickly does it warm up?
Approximately 3 minutes 30 seconds to brew-ready status.
Does it have automatic shutoff?
Yes.
Does it have automatic power-on?
No.
What electrical service does it require?
120V, 2100W, a NEMA 5-20 plug, and a required 20-amp circuit.
Is it approved for commercial use?
No. The supplied specifications explicitly identify it as residential-use only.
What warranty does it include?
12-month general coverage plus 5-year coverage on qualifying thermoblock heating assemblies and groups for domestic use.