Best commercial HVAC companies in Stockton, CA

#1 Comfort Air, Inc.

Stockton · Licensed since 1946

Family-owned Stockton mechanical contractor, in business since 1946, that installs and repairs heating, cooling and plumbing systems for homes and commercial buildings.

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#2 Lovotti Inc

Stockton · Licensed since 2005

Family-owned Stockton contractor, operating since 2006, that handles heating and air conditioning alongside electrical, refrigeration and plumbing work for homes and businesses.

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#3 Queirolo's Heating & Air Conditioning

Stockton · Licensed since 2005

Stockton heating and air conditioning company started in 2005 by the son of local HVAC contractor Robert P. Queirolo, serving homes and commercial customers.

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#5 Simi Heating & Air

Stockton · Licensed since 2021

Family-owned Stockton company run by Craig Simi and his sons that installs, repairs and maintains heating and cooling systems for homes and businesses.

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Rankings follow our published criteria (see How we rank). License details come from the California Contractors State License Board (CSLB); services, hours and prices from each company's own website. Confirm prices and availability with the company.

About HVAC in Stockton

Stockton summers are hot and dry, with July afternoons averaging about 94°F at the city's airport, and January nights average near 38°F, so homes rely on air conditioning for months and on furnaces or heat pumps in winter. HVAC contractors in California are licensed by the Contractors State License Board (CSLB) under the C-20 Warm-Air Heating, Ventilating and Air-Conditioning classification. Several of Stockton's older HVAC firms also do plumbing, sheet metal or solar work. Ranked by license record and years licensed, never by payment. Checked 27 October 2026.