As one of the most widely recognized green building rating programs, LEED helps building Owners minimize their impact on the built environment through a set of credits and points. HVAC systems themselves do not get points, but are a large part of the building system and contribute to earning several points the building may achieve. The following is a list of LEED points for New Construction where the HVAC system is involved:

  • EA Credit – Optimize Energy Performance: There are up to 18 points available (up to 20 for Healthcare) for demonstrating energy efficiency better than a baseline building as defined in EA Prerequisite – Minimum Energy Performance or by the recommendations set out in the applicable ASHRAE 50% Advanced Energy Design Guide. The benefit to the building Owner is reduced energy costs for their building.
  • EA Credit – Enhanced Refrigerant Management: There is 1 point available for not using refrigerants, or only using refrigerants with an ozone depletion potential of zero and a global warming potential less than 50, resulting in reduced risk to the building Owner.
  • EA Credit – Advanced Energy Metering: There is 1 point for installing advanced energy metering, for easy monitoring of equipment performance.
  • EQ Credit – Enhanced Indoor Air Quality Strategies: There are 2 points for improving IAQ by means of high efficiency filtration, increasing outdoor air ventilation rates by 30% above baseline and monitoring CO2 concentrations. This ensures additional outdoor air is supplied to the space for improved indoor air quality.
  • EQ Credit – Construction Indoor Air Quality Management Plan: There is 1 point for addressing IAQ and particulate contaminants during and after construction. For the HVAC design, this requires MERV 8 filtration if the air handlers are used during construction and MERV 13 filtration after the building is occupied.
  • EQ Credit – Thermal Comfort: There is 1 point for designing to ASHRAE Standard 55-2010 and verification of occupant thermal comfort. Addressing thermal comfort needs in the space helps building occupants feel more comfortable and improves productivity.

The above list is an overview of LEED credits that can be achieved using Venmar CES Dedicated Outdoor Air Solutions, and is not a full description of the requirements to achieve LEED certification, or to achieve points in each area of the program.

Download the LEED Projects and Venmar CES Engineering Bulletin.

Dedicated Outdoor Air Solutions

When Venmar CES equipment is configured as a DOAS, energy consumption is significantly reduced (in some cases by up to 35% with certain energy efficient parallel systems) by decoupling the heating, cooling and dehumidification loads of the outdoor air from internal sensible heating and cooling loads of the space. Numerous papers have been written and compiled on the advantages of using these systems over traditional VAV designs.

Regardless of the high performance building standard or guideline, the advantages of using a Dedicated Outdoor Air System can significantly contribute to the success of a high performance building project. Dedicated Outdoor Air Solutions optimize energy performance, allow for increased ventilation and better OA modelling. DOAS can contribute to an improved indoor air quality plan during construction and prior to occupancy. In addition, DOAS can contribute to indoor pollutant and source control objectives, as well as provide better (and simpler) ability to meet requirements for thermal comfort.

Dedicated Outdoor Air Solutions also help to meet indoor air quality best practices in existing buildings, and ensure occupant comfort for the life of the building by supporting a well ventilated and well conditioned space which in turn improves satisfaction and productivity.

To learn more about how we can help maximize your HVAC system’s contribution to your LEED project, contact your local Venmar CES Representative.

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