Onyx Coffee Lab

The Dual Boiler™

The Dual Boiler™ - Main image
$799.98 $1599.95 In stock

Category: Equipment

At the heart of this machine is a dual boiler heating system. The boiler, for the espresso shot, is PID temperature controlled, while a separate steam boiler offers instant and powerful steam on demand. So you can extract your shot at the right temperature, delivering optimal flavor, while simultaneously steaming your milk.

Shipped by our friends at Breville. This item only ships within the United States.

Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy
If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

View policy
Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy
Returning an item

Check the return conditions before sending anything back.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (5.0 / 5 · 5 reviews)

Riley P. ★★★★★

The steam is ready the second I finish pulling a shot, no waiting between them thanks to the separate boilers. And the PID temp control actually shows — my shots taste the same every morning instead of drifting.

Eli ★★★★★

Steaming milk for two flat whites back to back is effortless now — the separate steam boiler just keeps going while I pull shots. Having that instant steam on demand honestly cuts my morning routine in half.

Julian Y. ★★★★★

The PID-controlled espresso boiler keeps my shots rock-steady, even back-to-back, which is a total game changer for my morning routine. Steam power is genuinely on demand—no waiting around between milk and espresso. I've had it a month and it's made dialing in feel almost effortless.