Domestic & Commercial Boiler and HIU Servicing ensures heating systems function safely, efficiently, and reliably. Whether servicing a traditional domestic boiler or a commercial central plant, this work includes inspecting and cleaning heat exchangers, valves, pumps, controls, and safety devices, as well as checking for leaks, pressure stability, and correct combustion. HIU (Heat Interface Unit) servicing is especially important in district‑heated buildings—HIUs act like boilers within individual homes or flats, transferring heat from a central source to radiators and hot water without combustion in each dwelling . Routine (typically annual) servicing of boilers and HIUs improves energy efficiency, extends equipment lifespan, ensures compliance with safety and warranty requirements, and reduces the risk of breakdowns—making it an essential part of proactive maintenance for homeowners, landlords, and commercial operators.