#1 Thorsen's-Norquist
Turlock · Licensed since 1994
Family-run Turlock plumbing, heating and air conditioning company that traces its roots to 1911 and serves Modesto and Turlock homes and businesses.
24/7
Best 24-hour emergency HVAC companies in Modesto, CA
Get up to 3 quotes from licensed Modesto companiesFree. One short form. We send your request to local companies that do the job. Get quotes
I need:
Showing all 3 companies
#2 Mel's Heat & Air
Turlock · Licensed since 2008
Turlock heating and air conditioning company working in Modesto and across Stanislaus County since 1989, for homes and businesses.
24/7
#3 Bret Turner Heating and Cooling
Modesto · Licensed since 2008
Small family-run heating and air conditioning company that has served Modesto homes since 2008.
24/7
No company here matches all of those. Remove a filter to see more.
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 Modesto
Modesto summers are hot and dry, with July afternoons averaging about 94°F at the city airport, while January nights average near 38°F, so homes rely on air conditioning in summer and 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. Some local firms still replace evaporative (swamp) coolers alongside central systems. Ranked by license record and years licensed, never by payment. Checked 27 October 2026.