Company history
How the company began and how it has grown.
01
Where we began
ezyHVAC grew out of a team of engineering lecturers and engineers with long experience in air-conditioning, energy management and organisational consulting, in both academia and industry. We believe good engineering knowledge should solve real problems in buildings and factories, and should make hard things easy for the people who use it.
02
From software to a company
The team has built engineering calculation software that is in real use: ezyRTS and MultiRm for cooling load by the ASHRAE RTS method, ezyDuct and Duct Sizer for duct design, ezyPipeCal and Pipe Sizer for water piping, free online calculators for engineers and students, and OptiChill, a machine-learning platform for cooling system control that won the New Regional Startups Platform award.
03
Founding the company
EZYHVAC Co., Ltd. was registered on 19 September 2025 in Phayao, bringing design, installation, maintenance, consulting and software development together under one organisation.
04
Trusted by leading organisations
The team has been entrusted with the chiller plant energy management system of the Bank of Thailand's Northern Region office, and has advised on Department of Industrial Promotion projects including ReBoost Plus in Nan, lean automation in agro-industry and upgrading production towards Industry 4.0. We have also worked with the National Innovation Agency, the Office of SMEs Promotion, PTT Oil and Retail Business and SID-UPITI at the University of Phayao.
05
Today and beyond
Today ezyHVAC offers a complete service, from air-conditioning, energy and environmental systems and building engineering to consulting, training, calculation software and ASHRAE-based engineering books. Our goal is to deliver comfort, energy savings and environmental safety to clients in every sector, sustainably.