Stiftung Warentest, a well known consumer organisation, also tested coffee machines with grinders in August 2018. Of the four products, three are only marginally apart: the Severin coffee maker with grinder, the Philips HD7767/00 and the Melitta Aroma Fresh 1021-01, which is the winner with a clean 2.0 (1.0 is best 5.0 is worst) test result. All three machines were rated good. The PC-KA 1138 from Proficook came in last, with a satisfactory assessment.
In order to obtain this final result, the coffee machines went through the following six categories: Sensory evaluation of the coffee (35%), brewing (25%), handling (20%), environmental characteristics (10%), durability (5%), safety (5%).
In the test, the coffee was prepared with medium-hard water in the same quantity. It was then evaluated by eight subjects with regard to taste, smell, appearance, mouthfeel and aftertaste. The Melitta machine brewed by far the best coffee. The Profi Cook machine prepared a somewhat watery coffee with less volume than the other coffees. Also the coffee from the Severin machine tastes, according to the test persons, a little like caramel and is watery.
In terms of brewing, the preparation time of eight cups of coffee was measured. With nine minutes, the Philips machine is the fastest. The Profi Cook machine, on the other hand, took 14 minutes to brew the eight cups. In addition, the temperature of the coffee was measured directly after the brewing process and after 20 and 40 minutes when kept warm. The temperature of the coffee after brewing was satisfactory for all machines. Only the Severin machine showed a satisfactory result when keeping the coffee warm.
For handling, five test persons tested the daily use of the machines. This included, among other things: Filling in water, inserting and removing filters and pouring coffee. The cleaning and descaling of the machine was also evaluated. There were no major abnormalities at this point.
In order to assess the environmental characteristics, the power consumption was measured when brewing eight cups of coffee, when keeping warm until the automatic limit stop and in standby mode. The Melitta coffee machine consumes the most electricity, especially when brewing. In standby mode, the Severin machine consumes slightly too much energy. The noise level during brewing and grinding was also evaluated. Here all devices showed satisfactory to sufficient results, only the model from Profi Cook was not too loud when brewing.
Finally, the durability was evaluated. Parts of the machine that are dishwasher safe were rinsed 40 times at 60 degrees. The robustness of the grinding mechanism was assessed after 120 grinding operations. In terms of safety, particular attention was paid to the electrical system and hot spots. All coffee machines passed the final test with very good to good results.
We also tested the Coffee vending machines with grinder from Severin and rated it like our colleagues with a 2.4. We also tested the test winner from Stiftung Warentest. The Melitta
1021-01 AromaFresh Filter Coffee Machine also receives a good mark of 2.0 from us. However, we found the grinder to be too loud and two other machines were more convincing. These included our test winner and price-performance winner Aromatica II coffee machine with grinder from Klarstein, which was not among the coffee machines tested by Stiftung Warentest.