energy code

Passive House in Seattle

Passive House in Seattle

Our very own Dan Luddy was a speaker at the 2017 North American Passive House Conference, held right here in Seattle! This year’s theme was “The Path to Zero Source Energy,” and Dan presented on the use of energy modeling in Passive House design. He showcased the analysis that we providing for 1300 Pike, and how collaboration during the design process has resulted in a simplified, cost-effective approach to Passive House certification that focus resources on the most critical components. Dan’s main message was that Passive House certification is achievable, scalable and an excellent pathway to achieving exceptional building performance.

What’s a DOAS?

What’s a DOAS?

Double Orange Avocado Salad? Deep Ocean Adventure Submarine? Nope, the DOAS acronym stands for Dedicated Outdoor Air System. This type of mechanical system is becoming more common in commercial building design, and is mentioned explicitly as a prescriptive requirement in many new energy codes, including both the 2015 Washington State Energy Code and 2015 Seattle Energy Code.   Key Takeaways – A Dedicated Outdoor Air System (DOAS) is a system that handles ventilation loads independently of the primary heating and cooling system – By de-coupling ventilation from space conditioning, mechanical systems can be optimized for maximum efficiency – While costs and physical constraints may limit the viability of a DOAS in some cases, it is a worthwhile HVAC strategy to examine early in design to help meet targets for code compliance, energy efficiency and occupant thermal comfort. Dedicated Outdoor Air System A Dedicated Outdoor Air System is an air handling […]