Prev2 of 5Next Benefits of Pipe Insulation Insulating your hot water pipes can help retain heat, allowing hot water to reach your taps faster and stay warmer for longer. This reduces the workload on your boiler and increases overall system efficiency. Prev2 of 5Next Benefits of Pipe Insulation Post navigation Turning Off Pre-Heat Settings on Combi Boilers Using Thermostatic Radiator Valves (TRVs)