HVAC System Designer: Load, Duct & Equipment

AirWorks Solutions, Inc.; California; Hybrid; USD 65,000 - 90,000; Full time

Job summary

AirWorks Heating, Air & Plumbing in California is seeking an HVAC System Designer to engineer right-sized, efficient heating and cooling systems, including load calculations, equipment selection, and ductwork design.

You will perform Manual J and Manual D/S sizing, produce clear scopes and layouts for install teams, and coordinate permits, HERS testing, and rebates, while partnering with sales and install crews to fit homes and budgets.

Qualifications

• HVAC design experience (residential and/or light commercial).
• Proficiency with load-calc and duct-design tools.
• Strong understanding of California energy code (Title 24) a plus.
• Detail-oriented — your plans become someone's install.
• Clear communicator across sales, field, and office teams.

Responsibilities

• Perform Manual J load calculations and Manual D/S duct and equipment sizing.
• Select equipment and design systems to spec — including 2026 Title 24 heat pump conversions.
• Produce clear scopes, layouts, and material lists for the install team.
• Coordinate permits, HERS testing, and rebate/utility documentation.
• Partner with sales and install crews so the design fits the home and the budget.

Skills

HVAC design

Load calculations

Duct design

Title 24 knowledge

Job description

AirWorks Heating, Air & Plumbing in California is seeking an HVAC System Designer to engineer right-sized, efficient heating and cooling systems, including load calculations, equipment selection, and ductwork design.

You will perform Manual J and Manual D/S sizing, produce clear scopes and layouts for install teams, and coordinate permits, HERS testing, and rebates, while partnering with sales and install crews to fit homes and budgets.