Lennox Service: Chiller, Fan Coil and Air Handling Unit

In shortYOİ Mühendislik provides periodic maintenance, fault diagnosis, repair and compressor overhaul for Lennox chillers, fan coils and air handling units as an independent technical service. We are not an authorized Lennox service; for warranty work, please contact the manufacturer's authorized service. A daily crew works in Ankara and a scheduled crew in other provinces.

NoticeYOİ Mühendislik is not an authorized service for the Lennox brand; it provides independent technical service, maintenance and repair for Lennox units. The brand name is used only to indicate unit compatibility and belongs to its owner. For units under warranty, we recommend contacting the manufacturer's authorized service first.

Origin: USA
Made in Türkiye: Form Endüstri Ürünleri (licensed manufacturer)
Equipment we service: Chiller, fan coil, air handling unit
Service type: Independent technical service
Service area: Based in Ankara, scheduled team across Türkiye

Lennox service, maintenance and repair

Lennox is an air conditioning brand of US origin. In Türkiye, Form Endüstri Ürünleri produces Lennox branded units as a licensed manufacturer; for this reason the brand is especially common in public buildings, hospitals, schools, offices and commercial buildings.

For Lennox, we service chiller, fan coil and air handling unit groups. In most buildings these units work together as parts of a single central system, so we plan maintenance with the whole system in mind.

In case of a fault we measure first, then intervene, and we report our findings. When parts are needed, we offer equivalent or original part options and proceed with the customer's approval. We serve public institutions and businesses with annual maintenance contracts and under tenders.

Lennox equipment groups

Lennox Chiller servicemaintenance, fault, repair

Lennox Fan coil servicemaintenance, fault, repair

Lennox Air Handling Unit servicemaintenance, fault, repair

Lennox service areas

In Ankara our teams are out in the field every day; we respond to breakdown calls the same day. In other provinces we work on a project, annual maintenance contract and public tender basis by sending a planned team from Ankara.

Ankara Istanbul Izmir Bursa Kocaeli Antalya Konya Kayseri Eskişehir Adana All areas

Frequently asked questions

Are you an authorized service for Lennox?

No. We provide maintenance and repair for Lennox units as an independent technical service. For work covered by warranty, you need to contact the manufacturer's authorized service.

Do you service Lennox systems in public buildings?

Yes, we provide service under public tenders and annual maintenance contracts.

Do you provide Lennox service outside Ankara?

We have no branch outside Ankara; we send a scheduled crew under a project, maintenance contract or tender.

Do you supply spare parts for Lennox units?

We research equivalent or original part options and proceed with the customer's approval.

Plan ahead: calculators

Free preliminary calculation tools for capacity, airflow and operating cost. Results are for information only; a site survey and engineering calculation are required for a final selection.

Air Conditioner Capacity Calculation (BTU)Preliminary BTU and kW sizing from room areaCalculate →BTU, kW, kcal/h, TR ConverterCooling and heating capacity unit converterCalculate →Air Conditioning Energy and Operating CostElectricity consumption and cost comparison with COP and EERCalculate →Air Heat Load (Sensible and Latent)kW from airflow, ΔT and humidity differenceCalculate →Chiller Flow and Capacity CalculationkW, flow and ΔT calculation for water and glycolCalculate →Airflow and Duct SizingDuct section, diameter and rectangular size from velocity and flowCalculate →

See all calculators (31) →

Maintenance plan for your Lennox equipment

Site survey, equipment inventory and written quote. Based in Ankara, serving all of Türkiye.

Get a quote Maintenance contract

Lennox Service, Maintenance and Repair