Instant online estimates
Ongaro Online Estimates & Store
Use our online HVAC estimator to get a realistic budget range for your project. Because every home is different, final system design and pricing are confirmed after a professional evaluation that considers insulation, ductwork, window exposure, and overall home layout. Please keep in mind that any contractor providing a firm quote without evaluating your home may be relying on assumptions rather than a proper load calculation. Our goal is simple: ensure your system is properly sized for comfort, efficiency, and long-term reliability.
Priced right for your home
Why We Confirm Pricing In Person
Your online estimate is a fast, straightforward starting point, but every home in Marin, Sonoma, and Napa is different. Final system design and pricing are confirmed after one of our technicians evaluates your home in person, taking into account your insulation, ductwork, window exposure, and overall layout.
A proper load calculation is the only way to size equipment that keeps you comfortable and efficient for years, and it's how we've earned trust since 1932.
All work is performed under active California contractors license #215233.
Ready to Price Your Project?
Start your online estimate now, or reach out and our family-owned team will walk you through the options for your home.