End-to-End Excellence: Delivering exceptional results from beginning to end.


At Alstra, we work hard in every step of the way with our clients to build innovative infrastructures, lasting partnerships and better lives from the ground up.


Through our unparalleled expertise, we start by fully understanding our client’s interior building needs as we translate it into streamlined end-to-end solutions. Across every stage of the project, we eliminate inefficiencies by working hard to smoothly execute our commitments.


Right from the very first step, we deliver quality solutions from design and planning optimal programs, to installation, aftercare service, monitoring and control. We make sure we deliver the promise of excellence from start to finish.





Let’s Work Together

send a quick Inquiry

Concepcion-Otis Philippines Inc.

Concepcion-Carrier Air Conditioning Co.

Customer Service

+63 (2) 8 888 8247


Toll Free



Office Telephone

+63 (2) 8 850 1367



Km. 20, East Service Road South Superhighway Muntinlupa City, Philippines


+63 (2) 8 888-OTIS (6847)


Toll Free



Office Telephone

+63 (2) 8 888-OTIS (6847)



21F BPI-Philam Building, 6811 Ayala Avenue,

Makati City Philippines

We start. We f inish.