Book your HIU service
As part of your building's annual HIU servicing programme, HIU Breakdown & Repairs will service the Heat Interface Unit (HIU) in your flat. Choose a date and arrival window that suits you below — you'll get instant email confirmation.
Choose your appointment →What to expect
Your HIU is the unit that supplies your flat's heating and hot water from the building's communal system. Here's how your service visit works.
What we'll do
A full annual service of your HIU — safety and performance checks, clean-down, and a digital service certificate, which we submit to your building management.
Your arrival window
Your booking reserves an arrival window, not a fixed time — the engineer may arrive at any point during it. Please make sure someone aged 18+ is available throughout the window to give access. The visit takes about 45 minutes.
If a fault is found
Should any further work be needed, we'll prepare a quote and issue it to the responsible party. If and when it can be carried out depends on their authorisation and the availability of parts.
Choose your appointment
Select a date and arrival window below. You'll receive an instant confirmation by email.
Before your appointment
- Clear access to your HIU is required before the engineer arrives — please unlock the cupboard and move any stored items so the unit is fully accessible.
- The engineer may arrive at any time during your booked window, so please make sure someone aged 18+ is available throughout to provide access.
Can't find a slot, or need a hand?
Our office team is happy to help, Monday to Friday, 9am–5pm.