Commercial machines at home: what nobody mentions until it arrives

Commercial espresso machines appear alongside home machines at most specialist retailers, and at some price points a used or new commercial one-group looks like remarkable value next to a prosumer home machine. Sometimes it is. Four things decide it, and none of them appear in the product description.

Power

This is the constraint that ends most of these plans.

Commercial machines are built around large boilers that need to recover fast under continuous use, and the heating elements are sized accordingly. Many one-group commercial machines draw more than a standard domestic outlet circuit supplies, and two-group machines almost always require a dedicated supply — often three-phase, which most homes do not have.

Check the machine's rated power and voltage before anything else. Some models are available in a lower-power domestic-supply version; many are not, and no amount of wanting will change that.

Plumbing and drainage

Most commercial machines are designed to be plumbed to a mains water supply and to drain continuously. Two consequences:

• You need a water connection near the machine, with a filter appropriate to your water hardness. Plumbed machines scale faster than tank machines, because they are always refilling.
• You need a drain. The drip tray on a plumbed machine drains via a hose. Without somewhere for it to go, you are emptying a container several times a day.

Some machines can be converted to a tank with a rotary-to-vibration pump change or a manufacturer kit. Some cannot. This is a question to answer before buying, not after delivery.

Warm-up and running cost

A commercial boiler holds several litres. It takes 20–40 minutes to come to temperature from cold, and it is designed to stay on all day rather than be switched on for one coffee.

Realistically, a commercial machine at home is either left on for hours or put on a timer. Either way it uses substantially more energy than a home machine, and that difference is a recurring cost that can outweigh the purchase saving over a few years.

Size, weight and heat

Commercial machines are deep — often too deep for a standard kitchen counter under a wall cabinet — heavy enough to need two people, and they radiate meaningful heat into the room. Measure the space including the height needed to lift the hopper or open the top, not just the footprint.

When it genuinely makes sense

• You want a machine that will still be serviceable in fifteen years, with parts available.
• You make many drinks in a row, regularly, and the recovery time is the point.
• You have or can create a suitable supply, and you have somewhere to put it.

Commercial machines are built to be rebuilt: gaskets, valves, elements and boilers are all standard parts. That is a real advantage over sealed consumer machines and the reason well-maintained ones hold value.

When a prosumer machine is the better answer

For nearly everyone making a handful of drinks a day, a prosumer heat-exchanger or dual-boiler machine gives most of the capability, on a domestic outlet, in a size that fits, warming up in a fraction of the time. The boiler layouts are explained here.

Reading the listings

Commercial and prosumer machines are separate categories in our index because they are separate markets with different pricing behaviour, and we never merge a commercial listing into a home machine's comparison. We track 21,958 products across 13 stores; see the machine categories.