The lenova hob has never worked properly since installation. We can only use 2 out of the 4 jobs otherwise get a clicking noise and a constant on/off action. Spoke to howdens to come and inspect, on arrival they wouldn't touch the unit as we had put a light layer of silicone around the edges to prevent water ingress. Eventually I personally removed the silicone and got them back out, was told that I had removed the glass top from the base and warranty is voided!! The hob has not been touched since installation. Rubbish product and "3 years warranty" unless it breaks because you put a light layer of silicone around the edge. Do not trust this company, spend a bit more and save in the future. Avoid at all costs, go elsewhere