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Top 5 Radiator Problems, Common Problems & Issues With Radiators.

Top five radiator problems

The five most common radiator problems

We’re all spending more time at home at the moment and you might be noticing some things that you wouldn’t have done previously. How quickly the milk disappears. How everyone avoids emptying the dishwasher and finally, how maybe your radiators aren’t emitting the heat that they should be. Central heating is a neglected system in your home and generally only gets looked at if you’re changing or modernising, but what if you could diagnose those issues your-self.

Sometimes with wear and tear, it’s just time for a new radiator. As summer approaches it might be the perfect time to do a bit of an audit on your central heating system from radiator size to the types of radiator valves in use, for instance, do you know the difference between thermo-static radiator valves (TRV's) and lockshield valves? You won’t be using your radiator this summer (we hope), so if you find something wrong there’s plenty of time to fix or replace. Below are a few common causes of radiator problems that you can tackle yourself without any central heat-ing expertise.

  • Leaking radiator. A very common issue is a leaky radiator, something that everyone hates. Most of the time it probably requires a new radiator, although leak and external sealers are available. Generally, leaks are caused by corrosion and a poorly maintained system that will probably need a good flush through and protectant. Save this one for a plumber.
  • Air in the radiator / cold radiator. We’ve all had a feel of the radiator when it’s not get-ting warm quick enough and noticed some large and annoying cold patches at the top or bottom of the radiator or it's a noisy radiator making a hissing sound at times. This is a simple fix though fortunately and often due to trapped air in the radiator. A quick radiator bleed from the vent should release the air and allow the hot water flow to get all the way through - simple.
  • Sludge in the radiator. No one likes sludge. In this case it’s generally a build-up of corrosion deposits and can be a real issue. This again, will be diagnosed by cold spots in the radiator but these ones form at the bottom instead of the top. This is due to the metal deposits sinking. Again, this might be one for the plumber as it will probably require a good flush through using a cleanser and inhibitor.
  • Oversizing. This is more of an issue in older radiators but can still arise. It happens when the radiator is too large and will cause fluctuating temperatures in the room. Luckily, not a big job or a major inconvenience so can wait until more issues arise.
  • No inhibitor. With no inhibitor fitted to the radiator, there can be some major problems. The corrosion if not treated properly, can cause leaks and deposits collecting in the boiler. It then can massively affect the heating in every room rather than just one.

If you’re having major radiator issues, we’d suggest not taking the DIY route and contacting a heating engineer or plumber to take a look and ensure your entire system is maintained properly. If you’re looking for new radiators, then Revive are some of the best on the market. View our range of flat panel, compact and column radiators.


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