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Single boiler vs dual boiler vs heat exchanger vs thermoblock

Thermoblock, single boiler, heat exchanger, dual boiler: what each design does, and what the in-stock machines of each kind cost.

By the editorial team of Crema Count

Updated November 7, 2026

This page contains affiliate links: if you buy through them, we may earn a commission at no extra cost to you. How we choose.

30-second read

Our picks in 30 seconds

One pick per boiler design, by the rule we use everywhere: the cheapest in stock with that design as published.

Pump espresso machine

No. 1Cheapest single boiler

Gaggia Carezza Deluxe

15bar, pump pressure as published

$314.10 at Whole Latte Love, the lowest price we found. Single boiler; 15 bar; tank 47 oz; 11 x 12.5 x 12.75 in.

Boiler
Single boiler
Pump pressure
15 bar
Water tank
47 oz
Size (W x D x H)
11 x 12.5 x 12.75 in
Weight
13.2 lb
Power
1300 W
  • 2 stores in stock; the next lowest is $349
  • the store shows a compare-at price of $349
  1. Whole Latte Love$314.10 $349
  2. Gaggia North America$349

$314.10 $349price checked November 7, 2026; it may have changed

Check price at Whole Latte Love

Pump espresso machine

No. 2Cheapest heat exchanger

Lelit Mara X V2

n/ppump pressure not published

$1,699 at Espresso Outlet, the lowest price we found. Heat exchanger; tank 84.5 oz (fills from the top); 9 x 16 x 14 in.

Boiler
Heat exchanger
Pump pressure
not published
Water tank
84.5 oz (fills from the top)
Size (W x D x H)
9 x 16 x 14 in
Weight
42 lb
Power
1250 W
  • 4 stores in stock; the next lowest is $1,699
  • pump pressure not published on the pages we read
  • the water tank fills from the top
  1. Espresso Outlet$1,699
  2. Majesty Coffee$1,699 $1,699.95
  3. Whole Latte Lovefrom $1,699.95
  4. Seattle Coffee Gear$1,699.95

$1,699price checked November 7, 2026; it may have changed

Check price at Espresso Outlet

Pump espresso machine

No. 3Cheapest dual boiler

Breville Dual Boiler

15bar, pump pressure as published

$1,599.95 at Seattle Coffee Gear, the lowest price we found. Dual boiler; 15 bar; tank 84 oz (fills from the top); 16.25 x 15 x 15 in.

Boiler
Dual boiler
Pump pressure
15 bar
Water tank
84 oz (fills from the top)
Size (W x D x H)
16.25 x 15 x 15 in
Weight
28.35 lb
Power
1700 W
  • 4 stores in stock; the next lowest is $1,599.95
  • the water tank fills from the top
  1. Seattle Coffee Gear$1,599.95
  2. Espresso Outlet$1,599.95
  3. Majesty Coffee$1,599.95
  4. Breville$1,599.95
  5. Whole Latte Love$1,599.95 out of stock

$1,599.95price checked November 7, 2026; it may have changed

Check price at Seattle Coffee Gear

Pump espresso machine

No. 4Cheapest thermoblock

De'Longhi Stilosa EC260

15bar, pump pressure as published

$149.95 at De'Longhi, the lowest price we found. Thermoblock / thermocoil; 15 bar; tank 33.81 oz (fills from the top); 8.07 x 13.5 x 11.22 in.

Boiler
Thermoblock / thermocoil
Pump pressure
15 bar
Water tank
33.81 oz (fills from the top)
Size (W x D x H)
8.07 x 13.5 x 11.22 in
Weight
8.61 lb
Power
1100 W
  • the water tank fills from the top
  1. De'Longhi$149.95
  2. Whole Latte Love$149.95 out of stock

$149.95price checked November 7, 2026; it may have changed

Check price at De'Longhi

Prices shown by the stores on November 7, 2026 (holiday sale prices included). We have not tested any of these machines: we compare the published specifications. The commission never decides a pick. How we compare: criteria, sources and dates

Contents
  1. Thermoblock or thermocoil
  2. Single boiler
  3. Heat exchanger
  4. Dual boiler
  5. Which one for your drinks?
  6. Frequently asked questions

Crema Count is meant to be paid through affiliate links: if you buy through a link to a store, we may earn a commission, at no extra cost to you. No program has accepted the site yet, and a commission never decides a pick. How we choose.

Every pump espresso machine needs hot water to brew and hotter water, as steam, to froth milk. How it gets there decides how long you wait, whether you can brew and steam at once, and a good part of the price. Below, the four designs as the stores we read classify each machine; we have not measured temperatures ourselves.

Thermoblock or thermocoil

Water is heated on the way through a heated metal block or coil, not stored. Fast to start (Breville publishes "Ready in 3 seconds" for its Thermojet Bambino machines), compact, usually one temperature at a time: steam after you brew.

In our check: 18 pump machines, $149.95 to $1,999.95, 1100 to 1750 W as published, published warm-up 6 to 382 seconds (7 models publish one).

MachineLowest pricePowerWarm-up (published)Water tank
De'Longhi Stilosa EC260$149.95 at De'Longhi1100 Wnot published33.81 oz (fills from the top)Check price
De'Longhi ECP3630$199.95 at Whole Latte Love (2 stores, up to $199.95)1100 Wnot published37.2 oz (fills from the top)Check price
Gaggia Espresso Evolution$249 at Whole Latte Love (2 stores, up to $299.99)not publishednot published40.6 ozCheck price
De'Longhi Dedica Duo EC890$249.95 at Whole Latte Love (3 stores, up to $249.95)1450 Wnot published34.83 ozCheck price
Breville Bambino$299 at Espresso Outlet (4 stores, up to $299.95)1560 W6 s47 ozCheck price
Breville Bambino Plus$499.95 at Whole Latte Love (5 stores, up to $499.95)1560 W16 s64 oz (fills from the top)Check price
Breville Barista Express$499.95 at Seattle Coffee Gear (4 stores, up to $699.95)1600 W60 s67 ozCheck price
De'Longhi Dedica Maestro Plus EC950M$499.95 at Whole Latte Love (3 stores, up to $499.95)1450 Wnot published54 ozCheck price
SMEG ECF02$499.95 at Seattle Coffee Gear1450 Wnot published37.2 ozCheck price
De'Longhi La Specialista Arte Evo EC9255$699.95 at Whole Latte Love (3 stores, up to $699.95)1600 Wnot published56.13 ozCheck price
Breville Barista Express Impress$799.95 at Whole Latte Love (5 stores, up to $999.95)1750 W60 s67 ozCheck price
De'Longhi La Specialista Opera EC9555M$799.95 at Seattle Coffee Gear (2 stores, up to $799.95)1550 Wnot published67.6 ozCheck price
De'Longhi La Specialista Touch EC9455M$799.95 at Whole Latte Love (3 stores, up to $799.95)1450 Wnot published57.48 ozCheck price
Breville Barista Pro$849.95 at Espresso Outlet (2 stores, up to $849.95)1680 Wnot published67 ozCheck price
Breville Barista Touch$999.95 at Whole Latte Love (5 stores, up to $999.95)1680 W43 s67 ozCheck price
Breville Barista Touch Impress$1,199.95 at Whole Latte Love (5 stores, up to $1,499.95)1750 W20 s67 ozCheck price
Diletta Mio$1,409 at Seattle Coffee Gear1600 W382 s67.6 ozCheck price
Breville Oracle Jet$1,999.95 at Whole Latte Love (5 stores, up to $1,999.95)1400 Wnot published77 ozCheck price

How we compare: criteria, sources and dates

Single boiler

One small boiler holds water at brewing temperature; to steam, you switch it to a higher temperature and wait. Simple and durable, but milk drinks take turns.

In our check: 14 pump machines, $314.10 to $1,995, 850 to 1700 W as published, published warm-up 116 to 1200 seconds (10 models publish one).

MachineLowest pricePowerWarm-up (published)Water tank
Gaggia Carezza Deluxe$314.10 at Whole Latte Love (2 stores, up to $349)1300 Wnot published47 ozCheck price
Gaggia Classic Pro E24$499 at Whole Latte Love (2 stores, up to $549)1425 Wnot published72 ozCheck price
Lelit Anna$599.95 at Whole Latte Love (2 stores, up to $599.95)1050 W600 s91.3 oz (fills from the top)Check price
Bezzera New Hobby$799 at Whole Latte Love1100 Wnot published101 oz (fills from the top)Check price
Rancilio Silvia M$995 at Whole Latte Love (6 stores, up to $995)993 W210 s74 oz (fills from the top)Check price
Lelit Victoria$999 at Majesty Coffee (4 stores, up to $999.95)1200 W360 s84.5 oz (fills from the top)Check price
Profitec GO$1,199 at Whole Latte Love (2 stores, up to $1,199)not published510 s94.7 oz (fills from the top)Check price
Quick Mill Pop Up$1,295 at Clive Coffee (2 stores, up to $1,295)1200 W900 s60.9 ozCheck price
LUCCA Solo$1,395 at Clive Coffee (2 stores, up to $1,395)850 W660 s67.6 ozCheck price
Quick Mill Silvano Evo$1,395 at Majesty Coffee (3 stores, up to $1,495)1600 Wnot published67.6 ozCheck price
Fellow Espresso Series 1$1,499.95 at Whole Latte Love (4 stores, up to $1,499.95)1700 W116 s67.6 oz (fills from the top)Check price
ECM Puristika$1,659 at Whole Latte Lovenot published600 s67.6 oz (fills from the top)Check price
ECM Classika PID (Quick Steam)$1,799 at Clive Coffee1200 W1200 s94.7 ozCheck price
Quick Mill Andreja Premium Evo$1,995 at Whole Latte Love (4 stores, up to $1,995)1400 W900 s100 oz (fills from the top)Check price

How we compare: criteria, sources and dates

Heat exchanger

One large boiler is kept at steam temperature; fresh brew water passes through a tube inside it on its way to the group. You can brew and steam at the same time with one boiler to heat.

In our check: 10 pump machines, $1,699 to $2,750, 1200 to 1550 W as published, published warm-up 810 to 1200 seconds (7 models publish one).

MachineLowest pricePowerWarm-up (published)Water tank
Lelit Mara X V2$1,699 at Espresso Outlet (4 stores, up to $1,699.95)1250 W1200 s84.5 oz (fills from the top)Check price
Profitec Pro 400$1,699 at Whole Latte Love1400 Wnot published94.7 oz (fills from the top)Check price
Lelit Mara X3$1,999.95 at Whole Latte Love (4 stores, up to $1,999.95)1400 W1080 s84.5 oz (fills from the top)Check price
Profitec JUMP$2,059 at Whole Latte Love (2 stores, up to $2,059)1400 Wnot published94.7 oz (fills from the top)Check price
Diletta Bello+$2,149 at Seattle Coffee Gear1500 W810 s101.4 ozCheck price
Rocket Appartamento 2.0$2,150 at Whole Latte Love (5 stores, up to $2,150)1200 W1200 s84.53 oz (fills from the top)Check price
ECM Mechanika Slim PID$2,159 at Whole Latte Love (2 stores, up to $2,159)not publishednot published101.4 oz (fills from the top)Check price
Rocket Appartamento TCA$2,300 at Whole Latte Love (6 stores, up to $2,300)1350 W1200 s84.53 oz (fills from the top)Check price
Rocket Giotto FAST V$2,750 at Whole Latte Love (3 stores, up to $2,750)1550 W900 s60.9 oz (fills from the top)Check price
Rocket Mozzafiato FAST V$2,750 at Whole Latte Love (4 stores, up to $2,750)1550 W900 s60.9 oz (fills from the top)Check price

How we compare: criteria, sources and dates

Dual boiler

Two boilers: one held at brewing temperature, one at steam temperature, each controlled on its own (most with a PID). Brew and steam at once; more metal to heat, more watts and usually the longest warm-up.

In our check: 11 pump machines, $1,599.95 to $3,599, 1200 to 1800 W as published, published warm-up 600 to 1200 seconds (6 models publish one).

MachineLowest pricePowerWarm-up (published)Water tank
Breville Dual Boiler$1,599.95 at Seattle Coffee Gear (4 stores, up to $1,599.95)1700 W1080 s84 oz (fills from the top)Check price
Lelit Elizabeth$1,799 at Seattle Coffee Gear (5 stores, up to $1,799.95)1200 W600 s84.5 oz (fills from the top)Check price
Rancilio Silvia Pro X$2,195 at Whole Latte Love (6 stores, up to $2,195)1300 W900 s67.63 oz (fills from the top)Check price
Profitec MOVE$2,199 at Clive Coffee (2 stores, up to $2,249)1600 Wnot published94.7 oz (fills from the top)Check price
Breville Oracle (dual boiler)$2,199.95 at Whole Latte Love (2 stores, up to $2,999.95)1800 Wnot published84 ozCheck price
Profitec RIDE$2,499 at Whole Latte Love (2 stores, up to $2,599)not publishednot publishednot publishedCheck price
LUCCA A53 Mini V2$2,595 at Clive Coffee (2 stores, up to $2,595)1200 W900 s81 ozCheck price
Lelit Bianca V3$2,999.95 at Whole Latte Love (5 stores, up to $2,999.95)1400 W1200 s84.5 oz (fills from the top)Check price
ECM Technika VI$3,299 at Whole Latte Love (2 stores, up to $3,299)not publishednot published101 oz (fills from the top)Check price
Profitec DRIVE$3,449 at Whole Latte Love (2 stores, up to $3,499)1600 W660 s101 oz (fills from the top)Check price
ECM Synchronika II$3,599 at Whole Latte Love (2 stores, up to $3,599)not publishednot published94.7 oz (fills from the top)Check price

How we compare: criteria, sources and dates

Which one for your drinks?

See every model in the comparison, and what a heat-up costs in electricity in the cost per cup calculator.

Frequently asked questions

What is the difference between a single boiler and a dual boiler?

A single boiler brews and steams from one tank of water held at one temperature at a time: you brew, then wait for it to heat up to steam. A dual boiler keeps one boiler at brewing temperature and one at steaming temperature, so you can do both at once.

Is a heat exchanger as good as a dual boiler?

It also brews and steams at the same time: brew water runs through a tube inside a hot steam boiler. It has one boiler to heat, and the brew temperature depends on that design; dual boilers set each temperature on its own. Which is better for you depends on your drinks and budget, not on a test we have run.

What is a thermoblock?

A heater that warms water as it flows, instead of a tank of hot water. It heats fast (Breville publishes a 3 second heat-up for its Thermojet machines) and costs less; steaming and brewing usually take turns.

Gaggia Carezza DeluxeCheapest single boiler · $314.10 at Whole Latte Love
Check price