Breville Dual Boiler (BES920) vs Nuova Simonelli Oscar II
Two espresso machines a price tier apart — Breville Dual Boiler (BES920) (mid-range) and Nuova Simonelli Oscar II (prosumer) for latte & cappuccino and enthusiast / dialed-in, compared on the specs that actually decide the buy — not review fluff.
The Breville Dual Boiler (BES920) is mid-range-tier and the Nuova Simonelli Oscar II prosumer-tier suited to latte & cappuccino and enthusiast / dialed-in. The Breville Dual Boiler (BES920) has a dual boiler and the Nuova Simonelli Oscar II a heat exchanger (hx), which is the main difference. The Breville Dual Boiler (BES920) adds PID temperature control. Match the boiler type and control style to how you brew; tiers are price bands — check the current price at the retailer.
| Spec | Breville Dual Boiler (BES920) | Nuova Simonelli Oscar II |
|---|---|---|
| Boiler | Dual boiler | Heat exchanger (HX) |
| Price tier | Mid-range | Prosumer |
| Type | semi auto | semi auto |
| PID | Yes | — |
| Pre-infusion | Yes | Yes |
| Portafilter | 54mm | 58mm |
| Built-in grinder | — | — |
| Best for | Latte & cappuccino, Enthusiast / dialed-in | Enthusiast / dialed-in, Latte & cappuccino |
Which to choose
- Price tier — the headline difference. The Nuova Simonelli Oscar II sits a tier up (prosumer) from the Breville Dual Boiler (BES920) (mid-range) — you pay more for the spec advantages below. Tiers are price bands; confirm the live price at the retailer.
- Boiler — the deciding spec. The Breville Dual Boiler (BES920) uses a dual boiler and the Nuova Simonelli Oscar II a heat exchanger (hx). Separate boilers for brew and steam, each independently temperature-controlled. The most stable, most flexible architecture — and the most expensive. A single boiler kept at steam temperature with a heat-exchanger tube drawing brew water through it — so you can pull a shot and steam milk at the same time. The prosumer sweet spot. This drives most of the milk-drink workflow and price difference between them.
- Temperature. The Breville Dual Boiler (BES920) has PID temperature control (steadier shot-to-shot consistency); the Nuova Simonelli Oscar II does not.
- Portafilter — accessories don't transfer. The Breville Dual Boiler (BES920) takes a 54mm portafilter and the Nuova Simonelli Oscar II a 58mm, so tampers, bottomless portafilters and baskets bought for one won't fit the other.
Which one should you buy?
- Pick the Breville Dual Boiler (BES920) if you want PID temperature control for shot-to-shot consistency; or if you want the lower price band (mid-range rather than prosumer).
Check Breville Dual Boiler (BES920) price on Amazon →
Check Nuova Simonelli Oscar II price on Amazon →
Common questions
Do portafilters and baskets fit both the Breville Dual Boiler (BES920) and the Nuova Simonelli Oscar II?
No. The Breville Dual Boiler (BES920) takes a 54mm portafilter and the Nuova Simonelli Oscar II a 58mm one, so tampers, bottomless portafilters and baskets bought for one will not fit the other. Budget for accessories separately once you pick.
Is the Nuova Simonelli Oscar II worth the step up from the Breville Dual Boiler (BES920)?
Stepping up from mid-range to prosumer buys you a heat exchanger (hx) instead of a dual boiler. Worth it if you brew milk drinks daily or chase consistency; not if you mostly pull straight espresso. Tiers are price bands — confirm the live price at the retailer before deciding.
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