Bestopedia Rankings

Best HVAC Contractors in Duarte, 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

Our Top Pick

Gr Plumbing & Heating

Trust Score 100/100 — CLEAR license standing, bonded, workers’ comp current.

VERIFIED

  1. Gr Plumbing & Heating

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    100 / 100 Trust Score

  2. Kline's Kustom Heating & Air Inc

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    100 / 100 Trust Score

  3. Winegard Energy Inc

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    100 / 100 Trust Score

  4. Marco's Heating and Air

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    100 / 100 Trust Score

  5. Granillo David

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    100 / 100 Trust Score

  6. Tempro Refrigeration Inc

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    96 / 100 Trust Score

  7. Agape Air Condition & Heating Inc

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    91 / 100 Trust Score

  8. Armoudikian Sevag

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    83 / 100 Trust Score

  9. Primary Air Inc

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    82 / 100 Trust Score

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

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