NZ Systems Appliance Service: Londons Appliance Repair Specialists NZ Systems Appliance Service has serviced high-end domestic and imported appliances for your household needs since 2002. We guarantee you fast, efficient service. Within 24-48 hours our factory-trained mechanics can get the job done, servicing most popular brands of appliances. With more than 50 years of combined experience, NZ Systems Appliance Service will property diagnose and service your appliance issue. From washers and dryers to various other appliances, rest assured we will respond promptly to your call.