A familiar moment
The upstairs radiators that stay cool after a boiler service
You are balancing another heating system when a homeowner calls about several radiators that do not warm evenly. Ziverly can capture property and occupancy, heating type, boiler or heat-source make and model if known, radiator and zone count, open-vented or sealed arrangement if the caller genuinely knows it, caller-described cold spots, noise, pressure, discolouration, circulation or repeated fault symptoms, when they began, recent boiler, pump, valve, radiator or pipework changes, earlier flushing, inhibitors, leaks or repairs mentioned, installer, manufacturer, landlord or warranty involvement, access and preferred timing. It does not diagnose sludge, corrosion, scale, air, balancing, pump, valve, boiler, pressure, water-quality or pipework faults, confirm that a power flush is suitable, specify chemicals, temperatures, pressure, equipment or disposal, advise resets, bleeding, draining, isolation or continued use, interpret warranties, quote, accept the visit or promise results. Gas smell, carbon-monoxide alarm or symptoms, smoke, fire, burning, major leak, electric shock or immediate danger requires the approved urgent route.