Integrated Ventilation Design Assist

Termobuild enables some of the most efficient, independently verified buildings in North America

The Cost Efficient Path to Net Zero: Unlock the Stranded Value in Your Building’s Structure

How We Can Help

TermoBuild is an engineering design assist firm specializing in integrated ventilation design (IVD) solutions. We extend a building’s ductwork through the concrete flooring system to create a powerful, actively managed thermal mass for extremely efficient heating and cooling in any climate zone. It is a very simple engineering design with no moving parts, and no new equipment or complex software. 


The Basics

As illustrated, TermoBuild’s Integrated Building Ventilation Design (IVD) Assist utilizes a conventional building HVAC equipment and ducting integrated with standard hollow core concrete slabs, and a proprietary controls algorithm, to provide an inexpensive yet highly functional and efficient thermal storage mechanism for sustainable, net zero energy buildings.


Over the past 15+ years, TermoBuild has amassed a significant track record of successful projects in Canada and the United States. TermoBuild’s engineering design begins with its unique active thermal storage floor kit, which includes hollow core concrete slabs paired with a standard, but downsized, HVAC system.

The slabs store heat and coolness, mostly using fresh outside air, which is then released on demand to maintain desired comfort. It is user adjustable and has an instant boost option in the event of change from low to high occupancy.


Most of the year, integrated ventilation operates as a dedicated outdoor air system (DOAS) – without the high cost and energy consumption, bringing fresh air indoors while maintaining the highest standards of air quality and occupant comfort.

Re-circulation of stale air is rarely necessary, preventing sick building syndrome and the potential spread of infectious diseases like COVID-19. Year-round, non-hydronic radiant comfort provides the best occupant experience. Learn more here

TermoBuild Track Record to Date



Years in business



Number of Buildings



Square footage built



EUI Range (ekWh/ft2)



LEED certified buildings


CAPEX savings per sq.ft.


Energy savings


Space savings


HVAC reduction


OPEX savings per sq.ft.

  • ENERGY SAVINGS 30% to 50% 50% 50%
  • HVAC REDUCTION 30% to 50% 50% 50%
  • OPEX SAVINGS per ft2 40% 40% 40%
  • SPACE SAVINGS 7% to 13% 13% 13%

CAPEX Savings: $10 to $50 per ft²

TermoBuild enables a building to store free thermal energy for heating and cooling in hollow core concrete flooring slabs based on the time of day and outside/inside temperature differentials.

This captured thermal energy can then be used to heat or cool the building. TermoBuild’s design avoids mid-day premium time of use charges. Turning off the HVAC chillers during this period does not compromise comfort.

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