Silverdale Gas Professional Friendly Service Specialising in gas and plumbing appliance installation, service and repair. Please call for a FREE estimate. Silverdale Gas is an established company that has built up a reputation for providing a professional, friendly service to customers. We pride ourselves on this as well as our ability to maintain quality workmanship at a fair price. We specialize in all items of gas work from appliance installation, service and repair to full central heating installation.