What is Boiler Capacity?
The volume of water a traditional boiler can hold and heat, measured in milliliters.
Definition
Boiler capacity applies to machines with traditional boilers (not thermoblocks) and specifies the amount of water stored and heated within. A larger boiler capacity can offer more stable temperatures and greater steam power for milk frothing compared to smaller boilers or thermoblock systems, though it may have a longer heat-up time.
Why It Matters
A larger boiler capacity contributes to more stable brewing temperatures and sustained steam production, which is crucial for making consistent espresso shots and achieving high-quality milk froth for lattes and cappuccinos.
What to Look For
Larger boiler capacities (e.g., 250ml+ for brew, 1L+ for steam) generally indicate better temperature stability and sustained steam production.
Compare Home Espresso Machines Products
See how boiler capacity compares across different products.