Arkel Coast reviewed: The Portuguese challenger

There are those moments when a new player enters the field and should make the established big dogs nervous. The Arkel Coast is exactly that kind of candidate. We are dealing with a dual-boiler espresso machine here that doesn't come from the classic Italian workshops in Milan or Florence, but is manufactured entirely in Portugal.

With a price of around 2,300 euros, it positions itself in an extremely exciting segment. It is more expensive than the classic entry-level machines, but significantly cheaper than the cult objects from La Marzocco, which often cost twice as much. But how much machine do you really get for that money?

We tested the Arkel Coast for months, looked at various iterations, and can say today: The model in front of us is impressive and by no means needs to hide from the aforementioned manufacturers.

Design & Dimensions: Architecture for the Kitchen

When the Arkel Coast stands before you, its compact, cuboid shape makes it look like a built object. It consistently avoids curves or retro references. With a height of 40 cm and a width and depth of a good 37 cm, it is an almost square monolith that stands quietly and firmly in the room.

The front appears like a façade – a smooth, dark glass surface that also serves as the control panel. The material underscores this solid ambition: the machine weighs an impressive 23 kilograms. Dark metal dominates, everything appears strict and disciplined. We found no sharp edges during our tactile check, and the paintwork feels very high quality.

In detail, the Arkel Coast is functional but has small quirks:

• The drip tray: It is huge and a real highlight for working. We measured a capacity of 1.2 liters. Those coming from a smaller machine will enjoy not having to empty the tray after every shot.
• The portafilter: The handle is designed to be very thin. It looks elegant, but might not sit firmly in everyone's hand. In return, the fit is technical perfection: there is very little play between the included tamper and the basket of only 0.65 millimeters – a top value.
• The workflow disadvantage: The strict architecture takes a small toll on operation. Because the brew group is integrated so deeply and hidden, you almost have to bend down at first to insert the portafilter. You cannot see the mount directly, so inserting it requires some practice and muscle memory.

We rate the build quality of the Arkel Coast with 7.5/10 points and the accessories with the high-quality tamper, portafilter, and basket with 8/10 points.

Technology & Heat-up Time: A Sprint for a Dual Boiler

Those who know classic E61 dual boilers also know the wait: 25 to 30 minutes often pass before these chrome bolides are truly heated through. The Arkel Coast breaks with this unwritten rule. In our test protocol, we were pleasantly surprised: The machine is ready to go after just 12 minutes.

How does it manage that? The engineers use a 0.7-liter coffee boiler that is integrated directly into the brew head as a saturated group. This is supported by an auxiliary heater intended to ensure temperature stability right from the start. The 1-liter steam boiler in the rear acts completely independently and can be switched separately. This means: If you only want to drink an espresso in the morning, you leave the steam boiler off and save time and energy.

These 12 minutes are a real practical advantage. Want a spontaneous espresso in the morning? No problem with the Arkel Coast. It thus encroaches on the territory of fast thermoblock machines but offers the thermal mass of a real boiler. However, the truth also includes: while it beats many boiler colleagues, there are now machines with thick-film heaters that are ready after just five minutes. The Arkel is therefore very fast for its design, but not the absolute record holder on the market.

Energy Measurements in the Lab Check

Every espresso machine test in our protocol includes an impartial look at the electricity meter. Here, the Arkel Coast benefits noticeably from the fast heat-up time, but shows two faces – depending on how you use it.

• Without steam: If we leave the steam boiler switched off – i.e., in pure espresso mode – we measured an extremely low consumption: only 0.14 kWh on the clock for heating up and the first few shots. This is an excellent value that is almost at the level of small single-boiler machines. On our efficiency scale, it would rack up a strong 8 out of 10 points in this scenario.
• With steam: If you add the steam boiler, the thermal mass takes its toll. The total energy consumption for the same scenario (heating up plus five shots) rises to around 0.25 kWh to 0.29 kWh. This places it in the lower midfield – on our scale, that's still 4 out of 10 points.

The efficiency of the Arkel Coast is therefore literally in your hands: use the toggle switch for the steam boiler consciously, and you have one of the most economical machines in its class in your kitchen.

Taste & Espresso Quality: When Physics Meets Craft

Let's talk about the most important thing: what ends up in the cup in the end? How does the espresso we brew with the Arkel Coast taste? That depends, of course, on the choice of beans and our execution. But the Arkel Coast provides the foundation.

The Temperature Profile: A Character with "Lift"

A prerequisite for good taste is a stable temperature. In our detailed analysis in the lab, the Arkel Coast shows a very specific behavior here. Once warmed up, it hits the target temperature of 93 degrees almost perfectly – we measure an average value of 92.87 degrees in the steady state. That gives full marks in the "target achievement" cluster. But be careful with the first espresso in the morning: the "first shot" is on average about 1.5 degrees below the target temperature. A blank shot with hot water through the portafilter therefore makes sense so that the temperature is spot on from the beginning.

It gets interesting during the shot. We observe a thermal "lift." Unlike many machines whose temperature drops slightly towards the end, the temperature of the Arkel rises by almost 2 degrees during extraction (Intra-Shot Rise). This is not a technical defect, but it has sensory consequences: heat at the end of the extraction emphasizes bitter substances. The profile therefore appears somewhat more "aggressive."

In addition, you must know the offset: we found that the display reading does not exactly correspond to the temperature in the portafilter. At a set 92 degrees, about 93.5 degrees reach the puck. That is physics, not drama. Since this offset is constant, you can simply rethink: set the display one or two degrees lower to achieve your desired temperature.

Flow Control as a Taste Tuner

With the flow controller mounted on the right side, the Arkel has a powerful tool for quality improvement or quality assurance at its disposal. The technology behind it is not a simple needle valve that only throttles the inflow. Arkel uses a bypass system in the latest version. When you move the paddle, you open a branch and drain excess pressure in a targeted manner. The pressure gauge always shows you the effective pressure on the coffee puck.

This opens up three scenarios for taste:

1. Gentle pre-infusion: Due to the vibration pump, the pressure builds up more slowly anyway. With the paddle, you can reinforce this effect and gently pre-wet the coffee at low pressure, which helps especially with light roasts to tame the acidity and avoid channeling.
2. Braking the bitterness: This is where the circle closes to temperature. If you notice that the espresso could become too bitter towards the end due to the rising temperature, you simply reduce the pressure with the paddle – down to 6 or 4 bar. This reduces the extraction rate at the end and makes the espresso rounder and sweeter.
3. Shot Repair ("The Lifesaver"): My personal highlight in the workflow. You set the grinder wrong and the espresso shoots through much too quickly? Instead of pouring it away, you spontaneously regulate the pressure down to 6 or 7 bar. This artificially extends the contact time and saves the shot. The espresso may not be perfect, but it is often still surprisingly good and absolutely drinkable.

The solid temperature performance and the additional flow control are powerful tools for pulling very good espressos shot after shot. The Arkel Coast reaches 7 out of 10 possible points in the espresso potential category.

A brief note on volumetrics

For taste, please do not rely on the automatic timer. Since the machine only measures time (e.g., 25 seconds) and not volume, the result in the cup varies enormously as soon as you change the grind or use the paddle. For reproducible taste, there is no way around a scale here. A time-controlled output is better than no output. And once the grind is set cleanly and you work consistently

Steam Power: The Fog Machine

Anyone who likes drinking cappuccino will love this machine. The steam boiler has considerable power. In our test, it took only 23 seconds to heat a large portion of milk to 60 degrees. Michel aptly called the system a "fog machine." The foam is fine-pored and the frothing process hardly slows down even with many 0.6-liter pitchers in a row.

This is excellent frothing performance, which the Arkel delivers to us: 8 out of 10 points in our test protocol.

Cleaning and Maintenance

One point that is often forgotten is maintenance. Here, the Portuguese have thought ahead. There is a special drain valve at the bottom of the machine with which you can completely drain the boilers if you want to descale them yourself. You read that correctly! Basically, we do NOT recommend that you descale espresso machines with a boiler by yourself and at home. Descaling is necessary every now and then, even with very soft water that is constantly filtered. But for residue-free descaling, most espresso machines must be extensively dismantled and the boiler opened, as otherwise the descaling liquid remains in the machine.

Not so with the Arkel: the drainage system allows you to completely empty the boiler. And with that, you can easily carry out the descaling yourself. That is cold, hard cash. A descaling service every two to three years easily costs 200 to 300 euros! When comparing prices with other classic machines on the market, you can therefore deduct quite a bit from the Arkel in terms of running costs over a five-year period and rather invest it directly in the machine.

Catering Potential: Ready for the Club Festival?

We are often asked whether one can also use such machines for events, weddings, or the proverbial club festival. The Arkel Coast sends mixed signals here but is fundamentally an exciting candidate for mobile use.

On the plus side are the brutal steam power and the huge drip tray. Anyone who has to pump out cappuccinos in record time will love not having to empty the tray every five minutes. The temperature stability during many shots in a row also makes it resilient. Furthermore, at 23 kg, it is just about portable without immediately needing a forwarding agent.

However, there is a catch for professional continuous use: the Arkel Coast has no fixed water connection and the drip tray cannot be connected to the sewage system - at least it is very large. You are dependent on the 2.5-liter water tank. With high throughput, you therefore have to constantly keep an eye on the fill level and refill. For the private garden party or catering on a smaller scale, it is top – for high-frequency business, it lacks a water tap. However, anyone who can live with that gets a real workhorse at their side. In a small café, the machine would be in the wrong place.

Conclusion

The Arkel Coast is a challenge. A high-quality dual-boiler espresso machine that is manufactured with components from Portugal or Europe and, thanks to flow control, gives machines like the Micra, Zuriga, or Mozzafiato a run for their money.

Good temperature stability in everyday life as well as contacts in the DACH region make it an attractive espresso machine and the frothing performance is second to none. We are very taken with this espresso machine debut from Portugal and are already looking forward to the next announced model called "Tide".