
Our mission is to advance the quality of Mechanical Engineering Design especially in the field of Air-conditioning and Ventilating systems by delivering the best solutions to the HVAC requirements of our clients.
The engineering practice of LRPA is influenced by the professional ethics and diligence of its founder, Engr. Larry Punsalan. As it continues to progress through the years, its aspirations for credible and professional service remain grounded on evidence-based design and analytical approach to either design or building study. LRPA is an advocate of the integrated design process and continues to dwell on the principles of being integrative, interactive, and iterative, to be able to design systems that will be compliant to building requirements on indoor environmental quality, efficiency, resiliency, and overall sustainability.

BS Mechanical Engineering 1971, Mapua Institute of Technology PME 2648, Registered August 28, 1986 LRPA: 1975 – present Philippine Society of Ventilation, Air conditioning, and Refrigeration Engineers (PSVARE) Past President ASHRAE Philippines Chapter Past President Architectural Centre Club, Inc. (ACCI) Past President Philippine Green Building Institute (PGBI) Vice President for Finance Philippine Society of Mechanical Engineers (PSME) Member Certified HVAC&R Specialist Specialist # 80715-1-16 (awarded by AHVARSI, 2025)

BS Mechanical Engineering 1985, Mapua Institute of Technology PME 3071, Registered December 1995 LRPA: 1986-present Association of Heating, Ventilation, Air conditioning, and Refrigeration Specialists, Inc. (AHVARSI) President ASHRAE Philippines Chapter Past President, Past Chairman of the Chapters Regional Conference Philippine Green Building Initiative (PGBI) Director for Education and Training Philippine Society of Ventilation, Air conditioning, and Refrigeration Engineers (PSVARE), Past Treasurer Philippine Society of Mechanical Engineers (PSME) Life Member Pambansang Samahan in Inhinyerong Mekanikal (PSIM) Member Bureau of Product Standards Technical Committee 83 for Cleanrooms (DTI-BSP TC 83) Member International Society of Pharmaceutical Engineers (ISPE) Member Professional Regulation Commission (PRC), Technical Working Group-Mechanical, Development of the Planning and Design Guidelines for Hospital Facilities Vice-Chairman Professional Regulation Commission-Board of Mechanical Engineering (PRC-BME) Career Progression and Specialization Program (CPSP) Committee Member Certified HVAC&R Specialist: Specialist # 80715-1-01 (awarded by AHVARSI, 2025) Certified Advanced Professional Mechanical Engineer for HVAC&R AIPO-004 (awarded by PSME 2025) The Outstanding Mapuan Mechanical Engineer in the field of Consultancy (awarded by the Mechanical Engineering Graduates Association of Mapua, 2025)

BS Architecture 1992, University of the Philippines-Diliman Lic. Arch. 0011313, Registered August, 1993 LRPA: 2005-present United Architects of the Philippines (UAP) Makati Chapter Member ASHRAE Philippines Chapter Member Philippine Green Building Initiative (PGBI), Director for Zero Energy Building (ZEB) Philippine Green Building Initiative (PGBI), GREEN Building Professional and Assessor Philippine Green Building Initiative (PGBI), EDGE Reviewer