Maintenance
EssentialDescaler
Limescale is what most machines die of, and vinegar attacks the seals. A liquid descaler declared suitable for espresso machines does the same job as the maker’s own branded fluid, usually for less.
€15.90
Go to bol
Sage
Dual Boiler
Two boilers and a 58 mm portafilter, without a grinder
€999.00 in Black Truffle
Price verdict from 5 DecWe have measured this price since 5 November (5 days). Lowest measured: €999.00 on 10 November. A price verdict follows on 5 December at the earliest, and only after 2 more readings.
Where to buy
Updated on 10 November 2026Updated on 10 November 2026
Daily price history
Last 6 days
Lowest €999.00Now €999.00
5 Nov7 Nov8 Nov10 Nov
View as a table
| Date | Lowest price that day |
|---|---|
| 10 November 2026 | €999.00 |
| 9 November 2026 | €999.00 |
| 8 November 2026 | €999.00 |
| 7 November 2026 | €999.00 |
| 6 November 2026 | €999.00 |
| 5 November 2026 | €999.00 |
Price alert
When the Dual Boiler drops
Espresso machines drop hardest around Black Friday and in the weeks before Christmas. Leave your email address and pick below what you want to hear about.
The Dual Boiler is Sage's portafilter machine with two stainless steel boilers: one for espresso, with PID control, and one for steam. Brewing and frothing milk therefore happen at the same time, and the group head is heated separately. The portafilter is 58 millimetres, the size of café machines.
There is no grinder, and you froth the milk yourself with the steam wand. Anyone who wants it all in one appliance looks at the Oracle Dual Boiler, which pairs the same layout with automatic grinding and tamping.
Who for: Anyone who already owns a good grinder and does not want to brew and steam one after the other.
Compared with similar machines
Against 6 other manual espresso machines between €699.00 and €1,460.00, on the specifications the maker publishes.
- Water tank: 2.5 l, larger than most (usually 2 l)
- Width: 37.9 cm, wider than most (usually 34 cm)
Specifications
Making coffee
- Type
- Portafilter
- Grinder
- None, separate grinder needed
- Milk system
- Steam wand you control yourself
- After every use, a short burst of steam or water and a wipe with a damp cloth.
- Portafilter
- 58 mm
Capacity
- Water tank
- 2.5 litres
Dimensions
- Width
- 37.9 cm
- Depth x height
- 40.3 x 37.1 cm
Technical
- Pump pressure
- 15 bar
- Power
- 2200 watt
- Heating
- Dual boiler
Model
- Material
- Brushed stainless steel
- Warranty
- 2 years
- Model number
- SES920BTR
This is what we know for certain. Dimensions and capacities the manufacturer or the shop does not state are left out rather than estimated. A measurement or a tank volume that is not there is one we do not have.
What does it cost a year to maintain?
A worked example, not a specification: 2 cups a day (730 a year), the intervals from the maker's manual, with the water filter the maker recommends, and the lowest price in our catalog today.
- Cleaning tablets
- Not stated
- The machine says when, after about 200 shots. Sage gives no interval in time.
- Descaler
- Not stated
- Sage: descale when there is scale in the water tank. No fixed interval.
We cannot price anything for this machine: what the maker requires is not in our catalog, or the maker gives no interval.
How often you descale depends on your water hardness. Where the maker gives no interval for it, we leave it out rather than estimate it.
Beans, counted separately
6.57 kilos a year at 9 grams a cup: €108.34 with the cheapest kilo in our catalog, €445.45 with the dearest.
Frequently asked about the Dual Boiler
- Is the Dual Boiler a bean-to-cup or a portafilter machine?
- The Dual Boiler is a portafilter machine.
- Does the Dual Boiler have a built-in grinder?
- No, the Dual Boiler has no grinder. You grind your own or buy it ground.
- How does the Dual Boiler froth milk?
- The Dual Boiler froths milk: with a steam wand you control yourself.
- How wide is the Dual Boiler?
- The Dual Boiler is 37.9 cm wide. Check the height too if it has to sit under a wall cupboard.
- How much water does the Dual Boiler hold?
- The Dual Boiler's water tank holds 2.5 litres.
- What is the Dual Boiler's model number?
- Each colour has its own model number: SES920BSS in Brushed Stainless Steel and SES920BTR in Black Truffle. Compare on that rather than the name: makers sell near-identically named versions side by side, and the prices differ.
In the box
- 58 mm stainless steel portafilter
- 58 mm Razor dosing tool
- Single- and dual-wall baskets for 1 and 2 cups
- Integrated tamper
- Stainless steel milk jug, 480 ml
- Water filter and holder
- Cleaning kit and water hardness test strip
As the manufacturer states it. What a shop ships may differ.
Accessories that fit this machine
Picked on what this machine does and does not do itself
Milk
EssentialMilk jug
A stainless jug of around 600 ml is the difference between milk that froths and milk that boils. The shape of the spout decides whether you can pour anything with it.
€12.95
Go to bol
Grinding
EssentialCoffee grinder
Without a grinder in the machine this is not an accessory but a second purchase. Budget something close to the machine itself. On pre-ground coffee no portafilter machine gives you what it can do.
€204.00
Go to Coolblue
Maintenance
RecommendedGroup Head Cleaner, 6 sachets (Sage)
Sage's cleaning powder for backflushing the group head, in single-dose sachets. On daily use Sage recommends a flush every 2 to 4 weeks.
€12.95
Go to Expert
Brewing
RecommendedKnock box
The puck has to go somewhere, and the bin clogs with wet coffee within a week. A box with a rubber bar is quieter than it sounds.
€21.95
Go to bol
Maintenance
Can waitGroup Head Cleaner, 12 sachets (Sage)
The same Sage cleaning powder for the group head, in a pack of twelve sachets. At one flush every 2 to 4 weeks, as Sage recommends, that is six months or more.
€21.90
Go to bol
Brewing
Can waitNaked Portafilter 58 mm (Sage)
Sage's bottomless portafilter for its machines with a 58 mm group. Without spouts you see the espresso leave the basket, and with it whether the water passes evenly through the coffee.
€94.90
Go to bol
Brewing
Can waitCoffee scale
Dosing by eye is why the same machine tastes better on one day than the next. A scale accurate to a tenth of a gram, with a timer, turns pulling espresso into something repeatable.
€44.95
Go to bolBeans for this machine
Every bean fits every machine. What differs is the order: on a bean-to-cup the 100% arabica beans come first, because dark-roasted blends carrying robusta give off more oil and that clogs a built-in grinder sooner.
Segafredo
Segafredo Intermezzo
€16.49per kilo
Lowest price we have seen€16.49 · 1 kg bag
A blend with robusta, made for the Italian bar. Full and bittersweet, and the kind of bean a bean-to-cup grinder gets through without complaint.
- Blend with robusta
- Blend
Segafredo
Segafredo Espresso Casa
€18.45per kilo
Lowest price we have seen€18.45 · 1 kg bag
Segafredo’s house blend, for anyone who also drinks their espresso with milk.
- Blend with robusta
- Blend
Lavazza
Lavazza Crema e Aroma
€19.99per kilo
Keenly priced€19.99 · 1 kg bag
The classic Italian bar blend: arabica with a good deal of robusta, which is where the thick crema espresso is known for comes from. Robusta is a cheaper bean than arabica, and that usually shows in the price per kilo.
- Blend with robusta
- Blend
Lavazza
Lavazza Espresso Italiano Classico
€23.99per kilo
Keenly priced€23.99 · 1 kg bag
All arabica as well, like the Oro. The middle path between the soft arabica blends and the firm bar blends.
- 100% arabica
- Blend
What differs
Often compared with
Sage · SES995BSS
Sage Oracle Dual Boiler
Two boilers, automatic grinding and tamping, and milk that does itself
€2,014.00 in Brushed Stainless Steel
Price verdict from 17 NovW 45.4 x H 37.5 cm · 2.3 l tank
With essential accessories€2,029.90
machine + descaler
€449.00
Ordinary priceW 23 x H 38 cm · 2.1 l tank
With essential accessories€681.85
machine + descaler, milk jug, coffee grinder