A radiator that is warm at the top but noticeably cold at the bottom can indicate restricted flow or deposits inside the radiator and heating circuit.
Understanding the issue
A radiator that is warm at the top but noticeably cold at the bottom can indicate restricted flow or deposits inside the radiator and heating circuit.
What to check
Check that both valves are open and compare the affected radiator with others. One isolated radiator may have a local issue; several affected radiators can suggest a wider circulation problem.
When to get advice
System cleaning, valve work or balancing may be appropriate depending on the diagnosis. Avoid assuming a power flush is always required before the system has been assessed.
This is general information, not a substitute for inspecting your property. Do not work on gas equipment or live electrical parts unless appropriately qualified. If there is immediate danger, call 999. If you smell gas or suspect a gas escape, leave the affected area and call the National Gas Emergency Service on 0800 111 999 from a safe location. Do not operate electrical switches or use naked flames.
Need help with a property in Liverpool?
Tell TradesFix what is happening and your postcode so we can confirm coverage and help arrange the right next step.