5 Key Things Every Designer Needs to Know and Communicate to Clients for Effortless Title 24 (Single family and low-rise multifamily)

Complying with California’s energy code involves addressing source energy and efficiency first, then applying flexibility with renewable energy systems like photovoltaic (PV) panels and batteries. To achieve this, designers should understand and communicate these critical points to their clients effectively: 

1. Learn About Source Energy 

Source energy is a fixed aspect of compliance that cannot be offset with flexibility measures like PV panels. For instance, you cannot pair a gas water heater and a gas furnace with additional PV to gain compliance credits. Designers and clients should understand that electric systems are increasingly prioritized under Title 24. Electric-ready requirements are now standard, and with each new code cycle, gas usage is being further restricted. Designing all-electric homes is a future-proof choice, aligning with sustainability goals and regulatory trends. 

2. Focus on Building Envelope Efficiency First 

The building envelope—walls, roof, windows, and insulation—is the cornerstone of energy performance. Prioritize improving the envelope’s efficiency before focusing on mechanical equipment. A well-insulated and air-sealed building reduces overall energy demand, simplifying compliance and lowering long-term costs. While enhancing the envelope might increase upfront expenses, the long-term benefits, including significantly reduced utility bills, make it a valuable investment. Educate clients on why strategies like high-quality insulation and advanced air sealing are critical to achieving compliance and energy savings. 

3. Carefully Plan Glazing Percentage and Placement 

Glazing—the amount and location of windows—greatly impacts Title 24 compliance. Poorly planned or excessive glazing can create energy inefficiencies that are challenging to mitigate. To address this: 

• Optimize glazing placement to balance natural light with energy performance, minimizing heat gain or loss. 

• Stay within the code’s recommended glazing percentages to avoid unnecessary compliance obstacles. Helping clients understand the tradeoffs between aesthetics and energy efficiency allows for informed decision-making during the design process. 

  

4. Maximize Knowledge of Mechanical Systems 

A clear understanding of mechanical systems is crucial for ensuring compliance and smooth project execution. Here are some tips: 

• Indoor air quality (IAQ) requirements mandate continuous ventilation in each dwelling unit above 1000SF. A bathroom exhaust fan can suffice, but it must be a dual-use fan designed for both IAQ and local ventilation, with clearly labeled switches. Communicating these details ensures clients and contractors avoid costly rework during construction. 

• Avoid recommending electric resistance water heaters, as they consume significant electricity and can cause compliance failures. Educate clients about energy-efficient alternatives to ensure compliance and reduce energy usage. 

• Demand response control in precooling is a beneficial strategy that earns compliance credits. It involves cooling a space to lower temperatures ahead of peak hours, reducing energy demand during high-cost periods. This approach not only supports compliance but also significantly lowers energy bills for clients.  

  

5. Understand PV Systems and Battery Storage 

PV systems play a vital role in compliance, but their effectiveness depends on integration: 

• Adding extra PV panels won’t improve compliance unless paired with a battery storage system. Batteries provide credits that allow tradeoffs, such as offsetting other inefficiencies, and offer long-term benefits like reduced peak-time electricity costs. 

• For alterations or additions, adding PV systems doesn’t impact compliance. Instead, focus on envelope improvements or other efficiency measures for better results. Communicate to clients that PV additions in these cases are optional. 

  
  

Including a battery with a PV system not only enhances compliance but also provides energy independence and greater financial returns in the long run. Help clients see the value in this integration. 

Learn More by Consulting with Us 

This blog outlines the essential considerations for Title 24 compliance. If you want tailored advice for your project, get in touch! Let us review your designs and help you implement best practices to achieve compliance effortlessly. Together, we can ensure your project meets code requirements while maximizing energy efficiency and cost savings.