Do You Need To Bleed Underfloor Heating?

Underfloor heating systems are becoming an increasingly popular choice in Irish homes because of their energy efficiency and ability to evenly heat a room from the ground level. As the popularity of these systems rises, we naturally find ourselves being asked more and more questions about how underfloor heating works including ‘do you need to bleed underfloor heating?’. 

Most of the time, the answer to this question is no. Underfloor heating doesn’t require the regular bleeding that a radiator system needs and some systems like electric underfloor heating systems will never require bleeding. However, sometimes bleeding an underfloor heating system will be necessary.

When Do You Need To Bleed Underfloor Heating?

Many underfloor heating systems, including those recommended by us, will work by distributing hot water throughout the home via the pipe system hidden in the floor. To work properly, these water-based systems need to be free of air so that the hot water can move freely throughout the system. The bleeding process removes this air and may be required in the following circumstances:

• After initial installation – It’s possible for air to become trapped in the system when you first fill it up. Bleeding the system at this stage is important to set it up to work at maximum capacity.
• After system refill – If you ever have to drain the system for maintenance or repair work, then make sure you bleed the system after the process to eliminate any trapped air that remains in the system.
• Signs of air in the system – Signs of air trapped in the system include gurgling sounds coming from your pipes or uneven/reduced heating coming from the system. If you encounter any of these issues, bleeding the system is recommended.

How To Bleed Your System

We recommend that you get a professional in to bleed your system if you aren’t familiar and comfortable with the process, but if you do feel up to the job then the process is as follows:

• Step 1 – Make sure that your system is turned off to avoid any burns or other injuries.
• Step 2 – Locate the manifold. This is the central control centre of your system and your bleed valves will be on or close to it. Check the system pressure to make sure it’s at the recommended level.
• Step 3 – Have a bucket or towel to hand to catch any water, and then open up the valves starting with the lower part of the system. You should hear a hiss as any air in the system escapes. Once water is flowing steadily out, you can close it again – any air should have been expelled.
• Step 4 – Keep doing this for each valve, moving up through the home. Be sure to do each one independently. If pressure is low, top up the system.
• Step 5 – Ensure that all valves are closed and then restart the system. 

Underfloor Heating Maintenance Tips

As well as being aware of whether you need to bleed your underfloor heating system, there are a number of other useful tips to bear in mind to keep it running smoothly.

• Annual service – An annual maintenance service carried out by a professional is our top suggestion when it comes to keeping your underfloor heating system in peak condition. This will help to identify any possible problems before they may affect the performance of the system and ensure that your underfloor heating is safe and working as it should.
• Routinely check for leaks – The most important step in counteracting a leak and minimising damage is to find it in the first place. By regularly checking your system for any leaks, you can catch them before any significant issues are caused.
• Keep an eye on pressure levels – If pressure levels are low, it is quite easy for air to enter and get trapped in your system which will then mean you will have to bleed it. Keep an eye on your pressure and top it up if it’s looking a bit low.
• Flush system every few years – Flushing your system occasionally is important in order to prevent the buildup of any debris inside of the system that could reduce its performance.

So do you need to bleed underfloor heating? The answer is occasionally, but it does depend on your home and the system itself. Underfloor heating systems are generally very low maintenance, which is one of their primary benefits. However, being aware of what to do on those rare occasions that your system will need some servicing is important. If you need any advice on how you can best look after your home’s heating or wish to explore whether an underfloor heating system might be suitable for your home, the friendly team at Pipelife are always ready to lend a hand. Don’t hesitate to get in contact with us today.