HVAC

 

Instructions:

Microsoft excel is used for this application.

  • Provide basic information in the top cells. Fillable cells required to be filled are blue.
  • Complete the blue cells under the “Scope Items” heading.
  • Information from applicable building code standards have been provided in the green cells below the inputs. Please verify that this information meets the standards of your design before referencing this information in any plans or other submittal documents.  This information is provided for reference only, and does not constitute design or consultant service.
  • Additional specific information may be available in the yellow cells.

 

Building Standards for HVAC Systems

 

Scope Examples: Installation, repair, or renovation of residential heating, ventilation, and air conditioning (HVAC) systems. This may include:

  • Installing or upgrading HVAC units, including furnaces, air conditioners, and heat pumps.
  • Updating or replacing ductwork, vents, or registers.
  • Installing air filtration systems, humidifiers, or dehumidifiers.
  • Adding or upgrading thermostats, zoning systems, or smart HVAC controls.

 

Title 24 is divided into specific parts addressing various aspects of construction. Key sections for HVAC systems include:

  1. California Mechanical Code (CMC):

    • Governs the design, installation, and maintenance of HVAC systems, including heating, cooling, ventilation, and air distribution.
    • Includes requirements for equipment sizing, air handling, and proper ventilation to ensure occupant comfort and health.
    • Regulates system installation for both forced-air and hydronic systems, including clearance, venting, and ductwork.

  2. California Residential Code (CRC):

    • Provides specific requirements for HVAC systems in one- and two-family dwellings.
    • Includes provisions for system sizing, installation of ducts and registers, and proper placement of mechanical systems.
    • Specifies the minimum ventilation requirements for habitable rooms, kitchens, and bathrooms.

  3. California Energy Code:

    • Enforces energy efficiency standards for HVAC systems, including high-efficiency heating and cooling equipment, insulation requirements, and system performance ratings.
    • Mandates the use of energy-efficient HVAC equipment, including SEER (Seasonal Energy Efficiency Ratio) and AFUE (Annual Fuel Utilization Efficiency) ratings for air conditioners and furnaces.

  4. California Plumbing Code (CPC):

    • Addresses plumbing considerations related to HVAC systems, such as condensate drain lines for air conditioning units and water systems for hydronic heating.

  5. California Electrical Code (CEC):

    • Regulates the electrical requirements for HVAC systems, including proper wiring, grounding, and circuit protection for heating and cooling equipment.
    • Specifies the electrical requirements for components such as thermostats, air handlers, and outdoor condensers.

  6. California Building Code (CBC):

    • Applies to the structural considerations of HVAC systems, such as the support of ductwork and equipment, and the integration of HVAC systems into the building's structure.
    • Provides regulations on system access and clearance to ensure safe maintenance and operation.