How often does a unit really need servicing?
Once a year for normal household use. Twice a year if the unit runs most days, sits in a kitchen, faces a busy road, or serves a room with pets. Window units in dusty locations sit closer to the twice-a-year end.
Do you top up refrigerant as part of a service?
No, and nobody should. A correctly installed system does not consume refrigerant. If the charge is low there is a leak, so we trace and repair it first — otherwise you are paying to fill a system that will empty again.
What do you need from me on the day?
Clear floor beneath each indoor unit, access to the outdoor unit, somewhere to draw water for filter washing, and the remote. If the unit is above a stairwell or in a sealed void, tell us in the notes so we bring the right access kit.
Can you service a unit you did not install?
Yes — most of what we look after was installed by someone else. If we find an installation fault, such as a drain run falling the wrong way or missing pipe insulation, it goes on the report with what it would take to correct.
The unit is noisy rather than broken. Is that a service job?
Often yes. Rattles are usually loose louvres, a slack casing screw or a bracket that has shifted, and all three are covered by the routine visit. A deeper grinding or whining noise is a bearing or fan issue and is better booked as fault work.
I am a tenant — can I book, or does the landlord?
You can book, and many tenants do, but confirm who is paying before we arrive. For handovers we can address the report to the managing agent as well as to you, so the unit's condition is documented at the change of tenancy.
Will a clean actually make the room colder?
If airflow was the limit, yes, and the measured split on the report will show it. If the unit is undersized for the room or the glazing is unshaded, cleaning will not fix that, and we will say so rather than sell you a second visit.
What do you not do?
We do not carry out new installations, ductwork design or electrical work beyond the unit's own isolator and terminals. Where a job needs any of those, the report says exactly what is required so another trade can quote from it.