Apprenticeship
İlhan Kaya enters the trade at a Demirdöküm service centre.
CORPORATEFrom our roots
From our roots
to the future.
Since 1976, we bring technical craftsmanship, corporate responsibility and the technology of the future together.
1976TODAY
One of your experienced family.
Kayahan Isı (Kayahan Isıtma Sistemleri Teknik Bakım Onarım İnş. San. Tic. Ltd. Şti.) has served Istanbul’s European side in heating and HVAC since 1976, when founder İlhan Kaya began as an apprentice at a Demirdöküm service centre. After running the E.C.A. Bakırköy regional authorised service (1982–1994) and, from 1994, the Demirdöküm and Vaillant authorised service, we now bring 45 years of experience to every brand: boiler, air-conditioner and water-heater service, mechanical installations, insulation and energy-efficiency solutions — delivered 24/7 by MYK-certified technicians and teams trained in our EU-funded vocational courses.
SINCE 1976Technology changed.
Technology changed.
Our responsibility did not.
Authorised service
E.C.A. Bakırköy regional authorised service.
Kayahan Isı
Demirdöküm Bahçelievler authorised service; a 25-person team.
Every brand
Boiler, AC and water-heater service plus energy-efficiency solutions.
CORPORATE BACKBONE
Four values we carry from the past.
Rooted experience
We make decisions with real knowledge earned in the field.
People focus
We value trust, open communication and long-lasting relationships.
Technical accuracy
We measure, analyse and design every solution to the need.
Innovation
We develop the craftsmanship we have gathered with the technology of the future.