Niss Feiner is the Principal Mechanical Designer at Delta-T Designs Inc., a firm he founded in 2010 with a commitment to continuous improvement and delivering mechanical systems that are practical, resilient, and thoughtfully engineered. His career began in 2006 in the construction sector, working in estimating and project management for his family’s mechanical contracting company, experience that continues to inform his design approach with a strong grounding in constructability and real-world constraints.

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Over the past several years, Niss has focused extensively on the study of northern and remote-community design. Through academic coursework at the University of Alaska Anchorage and extensive professional research, he has developed a deep understanding of the environmental, logistical, and cultural considerations that shape building systems in cold regions. This specialization now guides his work on high-arctic modular housing, remote community buildings, and cold-climate mechanical systems, ensuring his designs are efficient, maintainable, and durable in demanding environments.

 

 A committed educator, Niss serves as an instructor for the Heating, Refrigeration and Air Conditioning Institute of Canada (HRAI), teaching building science fundamentals, ventilation design, and residential/commercial system design. He is also a professor in the HVAC Technology Program at George Brown College in Toronto, On, where he develops and delivers coursework in AutoCAD, Excel-based calculation workflows, HVAC applications, and hydronic and air system design.

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Niss also contributes actively to ASHRAE and industry standards development. He is a contributing author and subject matter expert for the ASHRAE Certified HVAC Designer Study Guide and is an author to the 3rd Edition of the ASHRAE Cold-Climate Building Design Guide, providing material for the chapters on Strategic Design, Building HVAC Design Process, Residential Applications, and Decarbonization. His committee involvement includes ASHRAE Technical Committees 2.2 (Plant & Animal Environment) and 5.10 (Kitchen Ventilation), CSA F280 (Determining the required capacity of residential space heating and cooling appliances), CSA B214 (Installation code for hydronic heating systems) along with previous service on the ASHRAE Toronto Chapter Board of Governors.

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In addition to his design and committee work, Niss is an active public speaker. Niss delivers a diverse range of technical and professional development presentations, spanning northern and Arctic building design, engineer–contractor collaboration, mechanical system selection, heat pump technologies, commercial kitchen ventilation, animal-occupied facility design, and high-performance building workflows, helping audiences across Canada deepen their understanding of complex mechanical systems, cold-climate challenges, and effective design practice.

Through consulting, teaching, authorship, and public speaking, Niss brings a rigorous, technically grounded, and community-focused approach to every project, dedicated to elevating mechanical design practices in Canada’s most challenging environments.