How to bleed your radiators

One of the most common issues many tenants have in their rented homes, is mould and damp.

There are many types of damp, including rising damp, penetrating damp and the most common type; damp caused by condensation. Whilst some of these are caused by poorly maintained houses, so it will be your landlord’s legal obligation to ensure that any required repairs are made, damp caused by condensation is an issue that you, as the tenant, is responsible for.

One of the easiest ways to reduce condensation and future mould growth is to adequately heat you home to dry out any moisture in the air.

Why do I need to bleed my radiators?

Living in a damp home can not only be unsightly, but it may also be damaging to both yours, and your family’s, health. As well as affecting your immune system, a damp home can cause respiratory conditions, particularly in babies, small children, elderly people and vulnerable adults.

To keep damp caused by condensation at bay, you need to make sure your home is well-heated. However, if you are finding that you home isn’t warming up properly is may be that there are air bubbles trapped in the system, which are preventing hot water from circulating effectively around your radiators. This is when you need to bleed your radiators.

Additionally, as over half of the UK’s fuel bills go towards heating and hot water, keeping on top of bleeding your radiators can help to cutt down on heating costs.

A guide to bleeding your radiators

  • Before you start, make sure that you turn your heating off and let all radiators cool down completely. This is to make sure that, if any water does spray out, it doesn’t scald you.
  • Use a radiator key, which you can get cheaply from any DIY shop, to release the air from the radiator. Do this by fitting the key into the valve at the top of the system and twisting slowly anti-clockwise until you begin to hear a hissing sound. It is best to keep a dry cloth on-hand to catch any drips as well as protecting your hands.
  • When the hissing noise subsides, this means that the air has left the radiator, and water will begin to fill its place. Quickly tighten the valve by turning it clockwise, being careful not to over-tighten and damage the valve.
  • Once you have tightened the valve and turned your heating back on, check your pressure gauge on your boiler. If it too low, you will need to top it up – you can find instructions on how to do so from your boiler’s manufacturer.

At CEL Solicitors, we believe that everyone deserves to live in a safe property. If you believe that any problems within your home may not be your fault, or to find out your rights as a tenant contact our expert team of friendly solicitors today on 0151 909 8212 or email