The Dutch company Nefit leads the way when it comes to durable and reliable central heating boilers. It is not for nothing that the first high efficiency boiler in the world was invented by Nefit. Unfortunately, it sometimes happens that such high-quality boilers leave you out in the cold. Should that happen, don't panic! Via Zoofy you can arrange for a mechanic to come and help you 24/7, and in no time the problem will be solved.
A common problem with a central heating boiler is a defective 3-way valve. You can notice this in the heating system, which suddenly becomes too hot or too cold. If the 3-way valve is defective, you need the help of a professional.