Welcome to the web site of Malmquist Mechanical Inc. This is a California Corporation that operates DBA company names M&M Heating & Air Conditioning Service Co., M&M Air Duct Cleaning Co., General Sheet Metal Heating & Air Conditioning Co. When you call with a service need we will dispatch the correct department and company to serve you best.


Stockton, CA HVAC Contractor

M & M Heating & Air Conditioning Service Co.

Having trouble with your air conditioning or heating? Bothered by dust and pollutants in your home or business? Call M & M Heating & Air Conditioning Service Co. for all your heating, cooling, and indoor air quality system installation, service, and repair needs in Stockton, CA and the surrounding San Joaquin county.

Get upfront, honest pricing!
Family owned and operated, we provide a written upfront estimate and never start a job unless you understand what is to be repaired and how much it will cost. Your okay is needed before any work is begun.

With more than 35 years of experience, our technicians will provide the expert service you need for a flat rate.

Learn More About M & M Heating & Air Conditioning Service Co.:

  • Air Conditioning – Residential, commercial, and industrial air conditioning system sales, service, maintenance, and installation
  • Heating – Residential, commercial, and industrial heating system sales, service, maintenance, and installation
  • Indoor Air Quality – Air purification systems, duct cleaning, duct sanitizing, dehumidifiers, and more

Fully licensed, bonded, and insured, all work guaranteed and comes with a 1-year warranty on workmanship. Extended warranties available.

We also offer a complete sheet metal fabrication shop.
We can fab any sheet metal flashing needed for water proofing a building, or repairing a damaged metal building, or fabricating and install a complete metal roof system. We work with these different types of metals, galvanized, stainless steel, copper, and lead.

Also serving San Joaquin, Stockton, Tracy, Manteca, Lodi and Discovery Bay counties.

Call M & M Heating & Air Conditioning Service Co. today at 209-952-6580, or browse our website for more information about our services.


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North American Technician Excellence




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HVAC Contractor - Stockton, CA - M & M Heating & Air Conditioning Service Co.
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