Heat exchanger cleaning
Main and plate exchangers cleaned chemically/mechanically; condensate trap flushed.
BOILER MAINTENANCE · ANNUAL SERVICE
Boiler maintenance.For a winter that burns less and breaks less.
Annual boiler service — heat-exchanger and burner cleaning, gas/air ratio, flue draught and safety tests — is a planned 45–60 minute job. We service DemirDöküm, Vaillant, Baymak, Protherm, E.C.A., Bosch, Buderus and every other brand, on the booked day, with a written service report.
WHAT MAINTENANCE IS — AND ISN'T
Maintenance isn't wiping the casing: it is a measured procedure.
Boiler maintenance protects combustion efficiency, safety and lifespan. An unserviced boiler burns a little more gas every year for the same heat; scale and soot on the heat exchanger show up first on the bill, then as a breakdown. At Kayahan Isı maintenance follows a checklist and a flue-gas analyser — never "we had a look, it was fine".
What is done
- Pre-check — fault history, pressure, leaks, flue connection and a visual gas-line check
- Heat exchanger — chemical and mechanical cleaning; on condensing models the condensate trap and sump are flushed
- Burner and electrodes — burner surface cleaned; ignition and ionisation electrodes checked for gap and wear
- Fan and flue — fan blades cleaned, room-sealed flue tightness and draught tested
- Gas/air ratio — CO/CO₂ measured with a flue-gas analyser and set to the manufacturer's values (the efficiency lever on condensing boilers)
- Hydraulics — expansion vessel charge, safety valve, auto air vent, pump and diverter valve
- Hot-water circuit — plate exchanger scale check, flow sensor and flow-rate test
- Safety and hand-over — gas leak test, pressure set, run test and a written report
When
Ideally September–October, before the heating season. Mid-winter service is possible, but a pre-season service minimises the risk of failing on the coldest days. Once a year for homes; every six months for heavily used sites and businesses.
Maintenance keeps the warranty
On new appliances most manufacturers tie the warranty to an annual service. In-warranty appliances should go to the manufacturer's authorised service; we are an independent service for out-of-warranty appliances. Having spent 45 years as DemirDöküm and Vaillant authorised service, we apply those brands' procedures to factory standard.
If a part turns up worn
A worn part found during service (electrode, gasket, expansion vessel, air vent) is reported before anything is replaced; nothing is changed without your approval. Parts are genuine and carry a written guarantee.
How the fee works
Maintenance is a fixed-price job by appliance type (conventional / condensing), stated clearly when you book. Any part needed is quoted separately in advance. Booked together with radiator flushing, both jobs are done in one visit.
SERVICE SCOPE
By checklist, by measurement.
Burner and electrodes
Burner surface, ignition and ionisation electrodes checked and set.
Flue-gas analysis
CO/CO₂ measured, gas/air ratio set to the manufacturer's figures.
Hydraulics and safety
Expansion vessel, safety valve, air vent, pump, gas leak test.
Written report
Work done, readings and recommendations on one page.
With radiator flushing
Cold radiators? System flushing is planned in the same visit.
RELATED SERVICES
Detail for your exact need.
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All boiler service services
Boiler Service
01Boiler Repair
Same-day repair for fault codes, ignition, pressure, hot-water and board faults.
02Boiler Installation & Replacement
Right capacity, flue and pipework fit; switching an old boiler to condensing.
03Emergency Boiler Service
24/7 line nights, weekends and holidays; the nearest technician is dispatched.
FAQ
About boiler maintenance.
How long does it take?
About 45 minutes for a conventional boiler, 60 for a condensing one; 2–3 hours if combined with radiator flushing.
Do I need to be home?
Yes — heating and hot water are off briefly, the run test is done with you and the report handed over.
What happens if I skip it?
Soot and scale cut combustion efficiency: more gas, less heat. Ignition and sensor faults follow, and the risk of losing heat on the coldest day rises.
Does a new boiler need servicing?
Usually not in year one, but most warranties require an annual service. Use the authorised service while in warranty; call us once it ends.
Maintenance vs. repair?
Maintenance is planned, preventive and fixed-price. Repair diagnoses and fixes an existing fault; the fee is quoted after diagnosis, before work.
How is the service fee set?
After diagnosis, the work and any part cost are quoted clearly before we start. Nothing is done without your approval.
Which districts do you cover?
Same-day service across Bahçelievler, Bağcılar, Bakırköy, Güngören, Zeytinburnu, Esenler, Bayrampaşa and Küçükçekmece on Istanbul's European side. Call us for neighbouring districts.
SERVICE AREAS
Same-day service on Istanbul's European side.
Our teams are based around Bahçelievler and cover eight districts; the nearest technician is dispatched to you.
BOILER SERVICE BY BRAND
OTHER SERVICES
Book your pre-season boiler service.
Pick 'Planned maintenance' on the form and choose a day and time window; we call to confirm.