OUR LEGACY
CSLB Certified Technicians
Legacy Heating & Air is a family-owned and operated HVAC company rooted in the North Bay. As a proud descendant of the Mishewal Wappo people, the owner brings a foundation of integrity, respect for the environment, and strong community values into every project.
With over 12 years of hands-on experience, we specialize in everything from precise system design and Manual J and Manual D calculations to expert installation, repair, and service. We’ve designed and installed hundreds of systems across Sonoma, Napa, and Marin County, always focusing on performance, efficiency, and long-term reliability.
Whether it’s a simple repair or a fully custom system, we deliver honest recommendations, clean work, and results that last.
Your comfort is our legacy.
SERVING THE NORTH BAY
Heating, Cooling & Ductwork Services
Professional HVAC repair, replacement, and custom ductwork solutions for homes and light commercial properties across Sonoma, Napa, and Marin County.
Furnance & A/C Repair
Fast diagnostics and reliable repairs for heating and cooling systems. We identify the real issue and fix it right the first time.
Custom ductwork & Replacement
Custom duct design and replacement to improve airflow, eliminate leaks, and balance temperatures throughout your home.
Furnace & A/C Replacement
High-efficiency system replacements designed using proper load calculations. Built for your home, not guesswork.
HVAC system diagnostics
Full system evaluations to identify airflow issues, inefficiencies, or performance problems that are often missed.
Preventitive Maintenance
Routine service to keep your furnace and AC running efficiently, extend system life, and prevent costly breakdowns.
System DEsign & Load calculations
Accurate system sizing and duct design for new installs or problem homes that need a real solution.
Request a Free estimate.
Serving Sonoma, Napa, and Marin County. Honest recommendations. No pressure.