My Radiators Are Not Getting Hot

As the winter is approaching fast the dependency on our heating systems increase and the lack of inefficient radiator’s functionality is more noticeable. So, as you start heating up your home for the colder months and you notice that your radiators are not getting hot, this blog will attempt to diagnose your ineffective heating system and get them working proficiently again.

It is very common for radiators to be warm at the bottom but cold at the top. This is a symptom that you have trapped air within your radiator due to a build-up of hydrogen in combi systems, or if you have a recently had a new central heating system installed with the pump above the supply pipe.

If your radiators are not getting hot, then they will most likely need bleeding. Bleeding your radiators is letting out the trapped air which has become caught inside so they can work at optimum efficiency again. If you’re going to bleed your radiators to see if that fixes your issues, then we recommend checking for rust or water underneath or on the radiator as this could be the sign of leaks in your heating system.

After bleeding your radiators successfully, this should release the trapped air in the system and your radiators should be back to normal again. Switch your heating back on and assess whether there is any more trapped air, as the air moves around the system and could return to the same radiator from a different area of the house.

If your radiators are warm at the top, then cold at the bottom then this is a little bit harder to rectify and requires a professional. If your radiators are not getting hot from the bottom, then you’ll need a powerflush. Powerflushing is a way of injecting new life into your heating system by removing built up residue and deposits from a central heating system using a pressurised mix of water and chemicals.

Sludge or calcium build up in a heating system means there could be an underlining problem that’s allowing air to get into the central heating system, causing radiators and heat exchangers to corrode. If you’re currently experiencing heating system issues, then a power flush may be the ideal solution to restore optimal heating to your home.

radiators are not getting hot radiators are not getting hot

Is your boiler not getting hot at all? Firstly, make sure your boiler and central heating is switched on.
If everything is switched on but your radiator is still cold, you need to work out if it’s just one radiator which is faulty or if it’s the entire system. To do this, switch off all the radiators in your house except the cold one and check to see whether it heats up. If it does, switch the other radiators on one by one and identify which ones may need bleeding.

If you have a thermostatic valve, make sure it’s on and check your valves are open. If it is switched on, then you will need to check whether your thermostatic valve is working because these can often seize up. If your valve needs replacing, then call in a professional.

If your heating system is dated, then this can affect the efficiency of your system and you could be due an upgrade. Our team of gas safe engineers can repair and replace your heating system to ensure that their working seamlessly. If your radiators are not getting hot, then it’s worth a chat with our engineers to see how we can help you.

Still unsure about any elements of your heating system? Let Barry Ward help you out!

We can also provide follow-up advice on care and maintenance and perform annual servicing to ensure your heating system remains in prime condition.

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