Common central heating problems and how to fix them

The central heating system is an integral part of our homes, yet it often goes unnoticed until something goes wrong. In this guide, we'll explore some common issues that can occur with central heating systems and provide solutions to fix them.

10 Common Central Heating Issues And How To Fix Them

common central heating issues and how to fix them

Cold Radiators

If your radiators remain cold even after turning on the heating, ensure that both the water and central heating are switched on in your boiler's programmer. If they are on and the radiators are still cold, there may be a problem with the system's pump. Trapped air or debris within the pump could be hindering its function. Consider contacting a professional gas engineer for assistance.

Uneven Heating

Your radiators could be warm at the bottom but cold at the top because of an imbalance. It often indicates air trapped within the radiators. Use a bleed key to release the trapped air. Turn off the pump, position a bucket underneath the valve, and use the bleed key to release air until you hear a hissing sound.

Loss of Water Pressure

For a noticeable decrease in water pressure, check the pressure gauge on your boiler, which should ideally read between 1-1.5 bar when cold. If the pressure is below this range, refer to your boiler's manual for instructions on how to top up the pressure.

Unusual Boiler Noises

Any noises such as screeching or kettling noises may indicate limescale accumulation on the heat exchanger. Additionally, trapped air within the system could also cause noises. Hiring a Gas Safe engineer is advised to diagnose and resolve these issues promptly.

Thermostat Malfunction

Failure to attain the required temperature or inconsistent heating patterns might be caused by a malfunctioning thermostat. If the thermostat runs on batteries, start by changing the batteries. It could need to be replaced or calibrated if the problem continues.

Pilot Light Keeps Going Out

If the pilot light on your older boiler keeps going out, it can be the result of a broken thermocouple or problems with the air supply. This problem is frequently fixed by properly ventilating the area surrounding the boiler and cleaning or replacing the thermocouple. You can speak to one of our heating engineers in York to get expert help. 

Frozen Condensate Pipe

The boiler will shut down if the condensate line, which drains surplus water from the boiler, freezes in cold weather. Usually, the function may be restored by thawing the pipe with a warm cloth or hot water bottles. You can think about insulating the condensate line to stop this from happening again.

Boiler Keeps Turning Off

There are several potential causes for your boiler to shut off without warning, such as a broken thermostat, insufficient water pressure, or an issue with a pump or diverter valve. Examine the pressure gauge on the boiler and repressurize if required. It's best to get in touch with a licenced heating engineer to identify and resolve the issue if it continues.

High Energy Bills

Your central heating system may be inefficient if your energy costs suddenly climb without your consumption increasing along with them. To better manage heating in different rooms, install thermostatic radiator valves (TRVs) or upgrade to a more energy-efficient boiler. Insulate exposed pipes to avoid heat loss. Furthermore, make sure your house has enough insulation to hold onto heat and save energy expenses.

Water Leaks

Water leaks near the boiler, radiators, or pipes should be fixed right away to avoid additional system degradation and water damage. To stop leaks, tighten connections or replace defective seals, and keep an eye out for any reoccurring problems with the system. If a leak persists, expert assistance may be needed to find and fix the underlying problem.

Have you noticed any of these common problems in York?

If you've noticed any of these problems with your central heating system and you live locally to Tadcaster, Wetherby or anywhere in York, please send us a message using our website's contact form or call us on 07834 168464 or 01904 373075 and we'll be happy to help.