As a homeowner we believe it is a really handy skill to be able to drain your central heating system in the situation your home experiences cold spots or leaking on a radiator. Yes, it can be a worrying thing to concern yourself with if this happens to you. But don't worry, here at Bathroom Takeaway we have you fully covered with an easy to follow guide on how to drain a central heating system properly. So a problem like this won't have you in needless worry in the future. So let's get going..
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Why Should You Drain Your Central Heating System?
Occasionally in your home, draining your central heating system may be required for reasons other than your standard maintenance. This includes situations such as a new radiator, replacing an old one or adding new bits to your home. In turn this can help prevent build up of limescale, sludge and water leakages giving you a longer life on your central heating boiler system.
It is necessary to periodically drain your central heating system in order to properly maintain it. Neglecting this task can result in potential problems, which can be quite costly overtime. So I am sure you're asking “how do I drain a central heating system?” Well don't worry let’s get into it.
How To Flush Central Heating System (DIY)
Central heating is an essential feature in your home so we feel it’s worthwhile knowing how to flush the central heating system the most effective way. So without further waiting around let’s get into the simple easy to to follow breakdown.
Step 1 - Turning Off The System
When questioning on how do you flush a central heating system? The first step should be to simply turn off and cut the water supply in your home. Once done, leave for radiators and pipes to fully cool down before going to the next step. If you are using a combi-boiler, switch it off, allow it to cool down, and release the water.
However, if you have a conventional system, start by isolating the water and then proceed to turn off the boiler. If your system operates with solid fuel make sure it’s fully put out.
Step 2 - Isolate Radiator From Heating System
When learning how to drain system central heating you firstly need to find the drain off valve in your home. This is usually located on the first floor of your home which will be on only 1 of your radiators.. Once found use a jubilee clip and attach a hose pipe to it and lead it outside,ideally down a drain.
Step 3 - Bleed Your Radiator
Once ready its key to then take the steps to bleed your radiator. Open up all the valves on your radiator throughout the home and start from the top flooring and drain them for around 10-15 mins before moving to the downstairs.
Key Tip - Open the bleed valves to let out any remaining air the water will drain out quicker.
When done go back to the radiator where you connected the hosepipe and proceed to open the valve. The water will start to empty from your central heating system, which may require approximately one hour, depending on the specific system you possess.
Step 4 - Open Drain Valve And Discharge The Water
After locating the drain valve, proceed to attach the hosepipe to it. Ensure the hosepipe is securely fastened by using a jubilee clip. To prevent any potential mess, place a towel on the floor and cover it. Finally, take the hose pipe outside and direct it towards a drain. We recommend draining it down a drain for safety.
Step 5 - Refill The Central Heating System
After ensuring that the process is complete and all water has been drained from the system, proceed to secure the valves on each radiator, close the initial radiator's valve, and detach the hosepipe. Have a container ready in case there is any excess water leakage during this step.
You now possess the necessary knowledge to effectively drain a central heating system. If you don't have a draining valve then simply follow the slightly different steps on how to clean central heating system.
Frequently Asked Questions
How Often Should My Central Heating System Be Drained?
We would recommend between 4-5 years to keep your system running efficiently. It must be ensured to be done right as it can lead up to bacteria and blockages if not done right.
What Risks Are There With Draining Central Heating Systems?
When draining a central heating system we recommend fully turning off everything heating related in the house to avoid the risk of spraying water which could burn skin.
How Long Does It Take To Drain My System?
Approximately it takes between 25-30 mins to drain your full central heating system.
How Do I Change My Radiator Thermostat?
Take a read of our easy rundown on how to change your radiator thermostat in your home.
