Who are we?
YOİ Mühendislik is an engineering company that services heating, cooling and air-conditioning systems. We have been working since 2009, and our base is in Etimesgut, Ankara. This website is the part of our company dedicated to fan coil service: maintenance, fault repair, cleaning and filter replacement, installation and spare parts.
We provide on-site service in every district of Ankara. For homes, hotels, hospitals, office buildings, schools and public buildings outside Ankara, we make a pre-diagnosis from photos and video and send our team on a scheduled visit together with the required parts. Details: service areas.
Our certificate and service approach
TSE Service Competence Certificate
HYB No: 12850. We provide our services as a company holding the TSE Service Competence Certificate (Hizmet Yeterlilik Belgesi).
Brand-independent service
We are not the authorized service of any fan coil manufacturer. We provide independent service to the same standard for all brands and models, including Aldağ, Üntes, Daikin and Alarko Carrier. Brands →
How do we work?
| Principle | What it means |
|---|---|
| Free survey | We inspect the units on site or from photos and video; we do not charge for the survey and quote. |
| Written quote | We send labour and parts as separate items, in writing. |
| No work without your approval | No work is done and no part is replaced until you approve the quote. |
| Invoiced work | We invoice the work we do and the parts we fit. |
| Maintenance with reports | During maintenance we record the work done, findings and recommendations for each unit. What is in the report? |
| Brand-independent service | For all brands we work with original parts or equivalent parts with matching technical values. |
Why YOİ?
Since 2009
Field experience in heating, cooling and air-conditioning systems gained since 2009.
One team for fan coils
Maintenance, repair, cleaning, installation and spare parts are handled by the same team, with a single point of contact.
Based in Ankara, serving all of Türkiye
On-site service in Ankara; pre-diagnosis and scheduled team visits outside Ankara.
We know the central system too
Some fan coil problems originate in the chiller, boiler or pumps. Because we also service central systems, we can assess the problem as a whole.
Our services beyond fan coils
As YOİ Mühendislik, we also service the following systems in addition to fan coils:
- VRF systems
- Chillers
- Air handling units
- Heat pumps
- Precision air conditioning
- Cooling towers
Details of these services are on our main website (in Turkish): www.yoimuhendislik.com. We also share our work on Instagram.
Contact details
+90 505 263 07 23 · You can send photos and videos.
Address
Topçu Mah. 1512. Cd. No:74/A, Etimesgut / Ankara
Opening hours
Monday–Saturday 08:00–19:30 · Sunday closed
Request a survey for your units
Send us the number of units, your location and any photos, and we will get back to you.