Radiator not working in a single room? Here's why...

At Enflame Heating and Plumbing, we are aware of how frustrating it may be when one room's radiator completely stops working. It can be especially annoying in the winter when heating is required. This detailed guide was created as a result to assist you in diagnosing the problem and repairing  your radiator.

radiator not working in one room

Possible Reasons for a Radiator Not Working in One Room

There are several reasons why a radiator may not be working in one room. Some of the most common reasons include..

Airlocks in the system

Radiator problems are frequently brought on by airlocks. They happen when air gets stuck in the system, obstructing the radiator's ability to circulate hot water. You might try bleeding the radiator to resolve this problem.

The first step is to turn off the heating system and let the radiator cool. Find the bleed valve at the top of the radiator once it has cooled. Turn the valve anticlockwise using the radiator key. A hissing sound, which signals air exiting from the system, should be audible. Retighten the valve after water starts to flow out of it.

Thermostat issues

A broken thermostat may be to blame if one of your radiators isn't working. Make that the batteries are functioning properly and that the thermostat is set properly.

Valve issues

A defective valve may possibly be the cause of the problem. Make sure the valve is open and that the knob is not jammed by checking it.


The likelihood that there is a blockage is preventing hot water from getting to the radiator is possible. You might need to get your heating system powerflushed if this is the situation to get this fixed.

Speak to a heating engineer

If you are not sure what is causing your boiler to leak water or fix it, book a boiler repair service with our Gas Safe registered engineers today. Get in touch by calling us on 01952300008

Ready to book a service plan?

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