Hearing clicking or ticking noises from a new profile radiator can be surprising for homeowners who expect quiet operation. While these sounds are often harmless, understanding their causes can help prevent concern and ensure the heating system functions efficiently.
One common reason is thermal expansion and contraction. When hot water flows through the radiator, the metal expands. As the radiator cools, it contracts. These repeated changes in size can cause the metal panels to rub against mounting brackets or neighboring components, producing a distinct clicking or ticking sound. This is especially common in new radiators, where paint and metal have not yet fully settled.
Air trapped within the radiator can also contribute to noise. Small pockets of air create uneven water flow, leading to gurgling, ticking, or clicking sounds as the water moves around obstacles. Bleeding the radiator to remove trapped air often eliminates this type of noise.
Improper installation or loose fittings may be another factor. Radiators that are not securely fixed to the wall or have loosely connected valves can shift slightly when heated, producing ticking sounds. Checking brackets, valve connections, and pipework alignment can help reduce this problem.
Occasionally, water flow and system pressure can exacerbate noise. High flow rates or pressure fluctuations create vibrations in the pipes and radiator panels, which may be heard as intermittent clicking. Adjusting flow rates, balancing the system, or using vibration-dampening mounts can mitigate these effects.
In most cases, clicking or ticking noises in a new profile radiator are normal and reduce over time as the system settles and the metal expands fully. However, persistent or loud noises should be inspected to ensure there are no installation issues or air pockets affecting performance. Proper installation, bleeding, and system balancing are key to quiet, efficient operation.
