Cylinders

Can I use my existing cylinder when I have an ASHP fitted?

If you’re looking at using your heat pump for heating hot water and your home, depending on your existing system you may need to have a new cylinder installed as well.

This is because current cylinders like the one you might have with your current system aren’t often suitable for the lower flow temperatures that heat pumps work at. Our range of air source heat pump cylinders have a larger coil to maximise heat transfer and heat your hot water quickly and efficiently. 


If you have a combi boiler and are looking to switch to a heat pump, you will need a new cylinder as your current heating system does not rely on one.


Alternatively, you may be able to combine this with your new heat pump in a hybrid system, where the boiler heats your water and the heat pump provides warmth for your home. You can also use a pre-plumbed hot water cylinder if you have limited space in your property. 

Baxi heat pumps

Our air source heat pumps will deliver reliable, energy-efficient performance. Suitable for a wide range of properties.

Find an installer

Simply enter your postcode and find a local, trained, Gas Safe registered (where applicable) engineer to give you a no-obligation quote on a new boiler, cylinder or air source heat pump installation.

Related FAQs

Will I need a hot water cylinder with my air source heat pump?

You will need to have a compatible cylinder to work with your air source heat pump, unless you are looking at using a hybrid system.

Should I turn off my air source heat pump in the summer?

You will need to keep your heat pump active throughout the summer months in order for it to work in the most efficient way and heat your water for showers and household tasks. Some heat pumps also have a cooling function, which may be beneficial during the hotter months, so long as the system has been designed for it.

How much space do I need for an air source heat pump?

Our heat pumps require between 1 and 1.5 metres of clear space in front of it to work properly and 300mm between the back of the unit and the wall.

Can an air source heat pump be moved after installation?

Generally speaking, your heat pump will not be able to be relocated after an installation. If you’re planning any renovations to your home, consider having these done as part of the installation process.