A photo of the whole heater gives a supplier useful context. A clear photo of the model label gives them the information they need to identify the exact unit. If you are shopping for a replacement online, send both before relying on a product name or advertised capacity.
Check the visible sides of the heater for a manufacturer label. Look for a field marked “Model” and copy the full code, including any letters or digits at the end. If the label is faded or inaccessible, check the invoice, installation paperwork or warranty record. Leave covers in place and ask your installer for help if the code remains unclear.
Model and serial numbers serve different purposes. The model identifies a product variant and the serial identifies the individual unit. For an online replacement enquiry, start with the full model code and add any clearly listed details such as capacity, fuel type and whether the current heater sits indoors or outdoors.
A similar name or capacity can appear on several listings. If you are buying gas, ask the supplier and your installer to confirm the quoted variant and fuel type. Ask them to write the exact replacement model into the quote or order confirmation so you can match it to the listing before paying.
Even when you have the old code, your installer still needs to confirm suitability for the property. If the original model has been discontinued, ask which model is proposed now and which site details they need before you order.
Browse Same Day Hot Water Service with your current model details handy. For supply-only orders, confirm the proposed model with your installer first.
Capacity helps narrow the range. The full code is more useful because models with the same capacity can have different specifications.