building performance consultant Interview Questions and Answers

1. What is your experience with energy modeling software (e.g., EnergyPlus, eQUEST, IES VE)?

   • Answer: I have extensive experience with EnergyPlus, having used it for over five years on a variety of projects, from small residential retrofits to large commercial new builds. I'm proficient in creating detailed models, running simulations, and interpreting the results to identify energy-saving opportunities. I am also familiar with eQUEST and have used it for smaller projects, and I'm comfortable learning new software as needed.

2. Describe your experience with building commissioning.

   • Answer: I've been involved in numerous building commissioning projects, ranging from pre-design Cx planning to post-occupancy evaluation. My experience includes developing commissioning specifications, overseeing testing and balancing procedures, and documenting commissioning findings and recommendations. I'm familiar with industry best practices and standards, such as ASHRAE Guideline 0, and I'm adept at working with contractors and building owners to ensure successful project outcomes.

3. How familiar are you with LEED or other green building rating systems?

   • Answer: I'm very familiar with LEED, having worked on several projects that achieved LEED certification. I understand the requirements for different LEED rating systems (e.g., LEED v4, LEED BD+C) and can help clients navigate the certification process. I also have some experience with other green building rating systems, such as WELL and BREEAM, and am always eager to learn more.

4. Explain your understanding of building envelope performance.

   • Answer: Building envelope performance is crucial for energy efficiency and occupant comfort. It encompasses the design and construction of the building's exterior, including the roof, walls, windows, and foundation. I understand the principles of heat transfer, air leakage, moisture control, and thermal bridging. My experience involves assessing existing building envelopes for deficiencies and recommending improvements such as insulation upgrades, air sealing, and window replacements to optimize energy performance and reduce operational costs.

5. How do you approach identifying energy-saving opportunities in existing buildings?

   • Answer: My approach involves a multi-faceted investigation. I start with a thorough site visit and review of building plans and operational data, including utility bills. I use energy audits to assess energy consumption patterns, identify areas for improvement, and pinpoint equipment inefficiencies. Energy modeling software helps me quantify potential savings from different retrofit measures. Finally, I present a prioritized list of cost-effective recommendations tailored to the client's needs and budget.

6. Describe your experience with HVAC system analysis and optimization.

   • Answer: I have considerable experience analyzing HVAC systems, including both conventional and high-efficiency systems. I can evaluate system performance, identify inefficiencies (like improper sizing, poor control strategies, and leaks), and recommend cost-effective solutions for improvement. My experience includes commissioning, retro-commissioning, and performance testing of various HVAC equipment, from chillers and boilers to air handlers and VAV boxes.

7. How do you communicate technical information to non-technical audiences?

   • Answer: I believe in clear and concise communication, tailoring my language and approach to the audience. For non-technical clients, I avoid jargon and use visual aids like charts, graphs, and diagrams to illustrate key findings and recommendations. I also focus on the practical implications of my analysis, highlighting the financial and environmental benefits of the proposed improvements.

8. What are some common building performance issues you've encountered?

   • Answer: Common issues include inadequate insulation leading to high heating and cooling loads, air leakage causing drafts and energy loss, inefficient HVAC equipment, poor lighting systems, and lack of building automation controls. I've also encountered issues related to moisture intrusion, thermal bridging, and poor daylighting design. Understanding these common issues allows me to quickly diagnose problems and recommend effective solutions.

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