They were called to diagnose the boiler, since it was not possible to adjust the temperature. As a result of the diagnosis, they said that it was necessary to change the part worth 770 rubles, and an additional 100 rubles installation. For the diagnosis itself, they took 35 rubles. I was not satisfied with this cost, and I turned to another company. As a result, the repair cost 65 rubles, because the pads under the buttons were simply worn out. I do not advise contacting this company, because they are just trying to cash in on people who do not understand this area.