Most of the time, issues with your radiator are caused by a simple problem that’s easily resolved. So, take a look at these five simple steps, and follow them to get your home toasty and warm in no time at all…

radiator bristol

Radiators Cost Explained

Our promise is to always be fair honest and open on pricing. Radiator faults can vary so much it would be unfair of us to mislead you with a roundabout price when a number of unforeseeable issues could present themselves on inspection. This is why it's key we carry out a full inspection before giving you our best price.

What we can say jobs can start from as low as £39.00, and our average radiator repairs £59.00, Replacement from £79.00.


Radiators not heating up

Check for problems with your central heating & boiler

The first thing you should do is check for any bigger, more serious problems with your system.

This means making sure that your central heating system is actually working. If all of your radiators won’t heat up rather than just one, this could be a sign of a bigger issue.

You should also check to see if anything seems unusual about your central heating system. Is it making a funny noise? Do you also have no hot water? If that’s the case, the first thing you should do is call a professional heating engineer and have them take a look.

Check for trapped air and bleed your radiators

If just one (or a few) of your radiators aren’t heating up, the most common reason for this is trapped air.

If you’ve just turned the heating back on after the summer, air can become trapped in your radiators, causing them to be warm at the bottom but cold at the top.

If this is the case, you may need to bleed your radiators.

Simply use your radiator key to unscrew the bleed screw a little, just until you hear a hissing sound. Once the hissing dies away and water starts coming from your radiator, be ready to close the bleed screw.

Your radiator should soon be nice and warm.

Check your radiator valves

If trapped air in your radiators isn’t the problem, or your entire radiator is cold not just the top, the next step is to check your radiator valves.

Make sure both the valve on the left and right of your radiator are open, and if you have a thermostatic valve (one that allows you to set the temperature and adjusts it automatically), make sure the radiator is turned on.

Thermostatic radiator valves can also seize up, causing your radiator to stop working. If you think this might be the case, get in touch with a professional heating engineer who’ll be able to properly diagnose the problem and replace the valve with a new one if necessary.

You may need to power flushing your radiators

If none of these issues seem to fit with your radiator problem, it’s possible that you may need a power flushing service.

Power flushing is the process of removing sludge and debris that can become stuck in your central heating system over time, causing it to not function properly.

A tell-tale sign that you may need power flushing is having radiators that are warm at the top, but not the bottom, as sludge in the bottom of your radiators can stop this area from being heated properly.

Need a professional heating engineer

If you’re still unsure as to what’s causing your radiators not to heat up, the best thing you can do is call a professional heating engineer.

Whatever the issue may be, they’ll be able to properly diagnose and fix the problem.

If you’re in any doubt as to what’s causing your radiator problems, don’t attempt to fix the issue yourself, make sure to use the services of a professional.

Emergency Plumber

Whether you are looking to service your boiler, replace your boiler or move from ‘oil to gas’ it is essential to find the right heating engineer to undertake any work. A professional heating engineer will provide you with all the information and advice you need to consider your options. They will supply quotes and provide peace of mind that all work is carried out to proper standards.

It is essential you use a Gas Safe registered engineer to install, service or check gas appliances including boilers. To carry out work on gas installations and appliances safely and legally, gas engineers must be on the Gas Safe Register.

Call 01173 698 067

Plumbers Near Me

A number of our key locations are listed below, but if you're unsure from our locations map whether we can send an engineer to your home, please contact our customer service team on 01225 240 230.

Southwest Plumbers Emergency Key locations

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