Common Heating Problems

Central heating is essentially a system where warm water is transported through a series of pipes. In the winter months these systems are in constant use and wherever there is water, there is an inevitable build-up of mineral deposits, e.g. limescale.
Internal limescale in the pipes of a hot water system can lead to problems with the performance of the central heating system e.g. underperforming radiators, expensive running costs and even complete heating system failures.
The best way to handle limescale is with a full power flush.
Power flushing uses a chemical solution which has been engineered to be safe on the piping while dissolving the build-up of impurities.
Rapid Plumb’s power flush chemical mixture not only removes blockages but coats the piping in a long-lasting solution that prevents further limescale build-ups.

Is limescale affecting the performance of your central heating system? Get in contact with Rapid Plumb today for more information on the advantages of power flushing.

Some Other Common Heating Problems

1. My Radiators aren’t heating up.

Is the issued isolated to a single radiator or is every radiator in the property cold? If every radiator is cold, you may have a problem with the central heating system as a whole.
Trapped air may be another factor affecting performance. Bled all radiators to release trapped air.

2. My upstairs radiators are hot but my downstairs radiators are cold

This is likely to be a problem with zone valve ( actuator head )

There is " Y plan" and "S plan" systems. These two plans are controlled by 'electric motorised valves' know as 'zone valves'. They play important roll to heat hot water OR heat radiators upstairs or downstairs only.
One of these valves could be jammed in the closed position and would need to replace valve.

3. There are cold patches on my radiator

If cold patches have developed at the bottom of the radiator the most likely cause is the build-up of limescale, rust or sludge within the central heating system. These impurities impend the flow of water within the radiator leading to cold patches and compromised performance.
To fix this problem, a power flush will be necessary. 

Power flushing is the most effective and fastest way to remove impurities and future-proof your system against reoccurring blockages.


A TRV is a option for a customer if they would like one room cooler or hotter than another room. It is fitted to one side of the radiator to control the temperature in that room. Water needs to flow through the radiators for circulation. Sometimes these TRV can get jammed in closed postion and would need to get repaired or replaced.

Get In Touch

For more information on common central heating system issues, get in contact with Rapid Plumb today.