- Heat pumps are efficient for apartments due to good insulation, but installation may face space constraints.
- Air source heat pumps need just 1m², while ground source pumps require at least 100m² for installation.
- Installation generally doesn’t need special permission, though ground source systems may require building upgrades in some cases.
Installing a heat pump in an apartment is possible, but comes with challenges. Here’s what you need to know
Heat pumps are a great way to keep your apartment warm and your hot water running efficiently. Apartments often benefit from decent insulation, meaning heat pumps will run very efficiently in many apartment buildings. The main downside is a lack of space for the system itself.
Air source heat pumps work fantastically for apartments.

You only need one square metre of free room on a balcony or outside area for the unit itself. If you’re lucky enough to have a garden, an air source heat pump is a strong option. You don’t need special permission to install one if you own the flat, as it’s considered a permitted development.
Ground source heat pumps, as the name suggests, draw heat from the ground. They are typically used for blocks of flats. This system needs a minimum of 100 square metres of outdoor space. It involves digging trenches to lay the ground loop, which is then connected to indoor units in each flat. This setup is also considered permitted development.
The advantage of apartment insulation is that you’re less likely to need major upgrades, especially if you already have a garden or balcony. However, if you’re installing a ground source heat pump for an entire building, some upgrades might be necessary.
Heat pumps can be a smart and eco-friendly choice for flats, but planning and consideration are key. Check in with the experts to find out more.