To make the service as smooth and as quick as possible it is helpful if you can gather together some information prior to the engineers visit. Previous Service Records Any previous service records, and also records of any repairs or work that has been done to your boiler previously. Boiler Model and Meter Details A note of the Boiler Make, Model and Serial Number of the Boiler and a reference to the Gas Meter(s) would be helpful. A List of Any Symptoms or Error Codes Any fault codes that your…