Passive House Pulse Toronto – Advancing Retrofit Excellence: Inside the Humber NX Project

Kevin Stelzer, BES, BArch, OAA, MRAIC, LEED AP BD+C, BSS, CPHD

Principal­­
ENFORM Architects Inc.

Kevin is the founding principal of ENFORM Architects. He is a licensed architect, Certified Passive House Designer, Building Science Specialist, and a LEED accredited professional. He has extensive experience in low carbon architecture, systems design and engineering coordination. He has participated in some of Canada’s most compelling high-performance projects including: The Humber College BLDG NX Passive House Retrofit, The Mohawk College Net-Zero Energy Joyce Centre, The LEED Platinum UBC AMS Nest, The LEED EB&OM Gold First Canadian Place Recladding & Renewal, and the TCH 50 Torbolton Passive House Retrofit.

Kevin speaks widely on topics of sustainability and architecture and teaches building science at Toronto Metropolitan University and the University of Toronto.

Steven Murray, P.Eng (ON,MB), BECxP

Principal, Building Science
Stantec

Steve has broad experience in new construction, rehabilitation of existing buildings, and deep energy retrofits targeting Passive House and Zero Carbon performance. Steve has developed expertise with 6-storey timber framed low-rise structures and multi-story mass timber buildings and the unique envelope challenges they entail. Recent work has focused on high performance buildings pursuing Passive House and Zero Carbon Building certifications, and the Building Envelope Commissioning (BECx) processes necessary to achieve these objectives. Steve has particular expertise with Pre-fabricated envelope systems for both new construction and retrofit projects.

Aman Hehar

Associate Director, Energy & Climate Change
Humber College

Aman is responsible for delivering on Humber Polytechnic’s ambitious goal to be net zero before 2030. Aman is a Professional Engineer, Certified Measurement & Verification Professional and LEED Accredited Professional and has 15 years of experience in the energy sector. Prior to joining Humber, Aman’s primary focus was on using energy simulations to assist design teams in understanding the impacts of their decisions during the planning and design phases of new construction projects.

SIGA

SIGA is a leader in the development and production of high-performance adhesive tapes and membranes for air- and weather-tight building envelopes. SIGA’s vision is a world with zero-energy loss buildings. Today, approximately 40% of the world’s energy requirements are consumed by heating and cooling systems. With SIGA’s innovative products, this energy requirement can be massively reduced. SIGA operates in 40 countries and employs over 500 people working together to shape the future of the building industry.

NZP Fenestration

NZP Fenestration is a passivhaus certified tilt and turn window manufacturer located in Quebec, Canada. We offer high-performance products and support from our team of experts from the production of the plans to the installation. Our uPVC profile allows us to manufacture very large dimensions, install the best triple glazing available and significantly reduce your energy use.

Fentro Hardware Systems

Fentro bridges the gap between the North American fenestration industry and European suppliers by providing quality fabrication and installation components along with excellent support and outstanding service.

As of 2025 Fentro is the official distributor of the Blaugelb product line, A collection of quality construction materials for window and door installation, specifically for high performance projects such as Passive House. Products backed by extensive research, product testing, and certifications.

Signature in this product group is the Triotherm+ window buck system; providing a structural yet thermally broken solution for mounting doors & windows out from the structural plane of the wall. Best of all, it is Passive House Certified (PHi).

Innotech Windows + Doors

Innotech Windows + Doors is a BC-based manufacturer of high-performance windows and doors, including Passive House Institute certified windows and doors. With over twenty years of manufacturing expertise, Innotech products are specified by leading building professionals for custom homes and multi-family developments that are architecturally striking and deeply sustainable. Ask us about our newly published EPDs!