Guide to Draining a Radiator: Perpetually Eliminating Chilly Spots
In every home, the central heating system is an essential part, keeping our living spaces warm during the colder months. However, over time, air can build up in the system, causing radiators to perform less efficiently. This article will guide you through the process of bleeding a radiator, a DIY task that can save you money and keep your home cosy.
Firstly, it's crucial to check the boiler pressure before and during the process of bleeding a radiator. A boiler pressure gauge will help you monitor the pressure levels. If the pressure drops and falls outside the optimum green band and into the red zone after bleeding a radiator, repressurising the boiler is necessary to bring it back into the safe zone.
The two blue handles on the boiler are used to repressurise it. The handle on the left opens the water supply, and the one on the right repressurises the boiler. The process of repressurising a boiler differs from brand to brand, but it is relatively simple, especially on new boilers.
Bleeding a radiator doesn't require many tools. The only tool you'll really need is a radiator key, but if not available, a flat head screwdriver or an adjustable wrench spanner can be used instead. The bleed valve is typically located on the top right-hand side of the radiator, but it could be on the left or right-hand side.
So, how do you know when a radiator needs bleeding? Cold spots in a radiator are a clear sign. These cold spots can appear at the top of the radiator, which indicates an air lock in the radiator. If not bled, air can travel round the system and cause issues with flow rates and potentially lead to rust over time. Unusual noises like gurgling, clunking, and rattling can also indicate a radiator needs bleeding.
Over-bleeding a radiator can lead to too much water loss and a significant decrease in the system's pressure. To avoid this, it's best to catch the water that comes out of the bleed valve in a container. After bleeding a radiator, turn the heating back on and check that they're heating up correctly.
Ideally, radiators should be bled at least once a year, before the heating season starts. If unsure on how the filling loop works, check the manual or call a professional. Remember, safety should always be your priority.
The expert with 40 years of experience in the heating industry, Hans Müller, mentioned in the article about bleeding radiators, emphasised the importance of this task. By following these steps, you can ensure the efficiency of your central heating system and save on energy bills. Happy bleeding!
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