Bestopedia Rankings

Best HVAC Contractors in Palo Alto, California

Ranked by the Bestopedia Trust Score, drawn from verified CSLB license, bond, and workers’-comp records. Rankings are earned — never for sale.

Last updated July 5, 2026

  1. Quality Comfort Heating & Air Conditioning Inc

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    93 / 100 Trust Score

  2. Calisun Roofing

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    86 / 100 Trust Score

  3. Evergreen Air HVAC Corp

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    83 / 100 Trust Score

noun /best-oh-PEE-dee-uh/

a curated ranking of the best in any category, based on independent review.