Who pays for combi boiler servicing and how is it done?
Between a tenant and a landlord, who covers boiler servicing and breakdown costs, and who should carry out the work?

Short answer
Routine (periodic) boiler servicing counts as a running cost of use, so it normally falls to the tenant, while faults caused by the appliance itself, spare parts and replacing the unit are the landlord's responsibility. Book an authorised service engineer before the heating season starts, and keep the service report and the invoice.
What you need
Step by step
Read the cost clause in your agreement
Check the "Special Conditions" or "Other Provisions" section of your tenancy agreement. Most contracts state plainly which party is responsible for boiler servicing. A written clause settles the argument; without one, the general split applies: routine servicing to the occupant, appliance faults and parts to the owner.
Decide whether it is a fault or a service
Radiators not heating, dropping pressure or an error code on the display count as faults, and the cost points to the landlord. Filter cleaning, combustion adjustment and flue checks are periodic maintenance. If you call an engineer without drawing this line, nobody knows who owes the invoice.
Book an authorised service engineer
Make an appointment through the "Service" or "Support / Service Request" section of the manufacturer's official site, or by calling their support line. Give the model and serial number from the label, your address and a description of the problem. Work done outside the authorised network can void the warranty.
Be present during the visit and take the report
The engineer inspects the appliance: burner and heat exchanger cleaning, gas leak and flue gas measurement, expansion vessel and system pressure. Before they leave, ask for the "Service Report" or maintenance slip. It lists the work carried out and any parts replaced, which is your proof later.
Send the invoice to the right party
If the invoice includes a repair or spare part line, forward it to the landlord with a photo of the service report and agree the settlement in writing via messaging, email or formal notice. Get written approval before deducting anything from the rent, otherwise the deduction can be treated as unpaid rent.
File the maintenance history
Keep the service report, invoice and correspondence together in one folder. At the deposit conversation when you move out, or if the boiler fails again, these documents show servicing was done on schedule. They also protect the warranty, which matters to the landlord too.
Tips
Watch out
Carbon monoxide leaking from a boiler or flue is silent and lethal. If you smell gas, see soot marks, notice the flame going out repeatedly or feel dizzy, shut off the boiler and the gas valve, open the windows, and leave without touching any electrical switches before calling the emergency gas line. Letting an unqualified person service the boiler destroys both the warranty and your safety.
Frequently asked questions
+Does the tenant or the landlord pay for boiler servicing?
Periodic servicing counts as an ordinary cost of use, so as a rule it belongs to the tenant. Faults caused by the appliance itself, spare parts and replacing the boiler are the landlord's responsibility.
+When should a boiler be serviced?
The most sensible time is before the heating season starts, after the appliance has been idle for months. For frequency, follow the interval in the manufacturer's manual and the warranty conditions.
+What if the tenancy agreement says nothing about boiler servicing?
Without a written clause the general split applies: routine servicing to the occupant, appliance faults to the owner. If the disagreement continues, send written notice and consider mediation or the local civil court.
+Can I deduct a repair cost from the rent?
Deducting on your own is risky; a reduction made without the landlord's written approval can be counted as unpaid rent. Send the service report and invoice first, then get the offset confirmed in writing.
+Can I use an independent engineer instead of the authorised service?
If the boiler is under warranty, or the warranty ties periodic servicing to the authorised network, you can lose your cover. Authorised engineers are also the safer choice for flue gas measurement.
Sources and verification
Last verified: September 15, 2026. tell us. Cost split and dispute routes reflect Turkish tenancy practice; check local rules and your own agreement if you are elsewhere.
This content is for information only; for official procedures the relevant institution’s current announcements take precedence. Details: disclaimer.