Marcos Air Conditioning

No ratings collected yet Ontario, California

636 WEST SONOMA COURT, Ontario, CA 91761, USA

License checked License #950285 16 yrs experience

Verify this license yourself at the California Contractors State License Board (CSLB).

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Marcos Air Conditioning is an HVAC contractor in Ontario, California, serving homeowners and businesses. AC Services are at the core of the company's work, from diagnosing weak cooling and repairing failing components to replacing units that can no longer keep up with a hot California summer.

Local market — Ontario

HVAC pros here

Have a website

17%

Cooling demand

1,709

Heating demand

1,537

Cooling/heating demand = annual degree days (NOAA). Electricity = state residential average (EIA).

Services Offered

AC Services in Ontario Heating Services in Ontario Ductwork Services in Ontario Heat Pumps in Ontario Furnace Services in Ontario Thermostat Services in Ontario Emergency HVAC in Ontario Maintenance & Tune-up in Ontario

Service Area

Ontario, California All of California

Location

About Marcos Air Conditioning

The company also handles Heating Services, Furnace Services, Heat Pumps, and Ductwork Services. Typical work includes checking airflow, sealing and repairing ducts, inspecting burners and ignition on furnaces, and evaluating heat pump performance. Thermostat Services cover installation and programming, while Emergency HVAC response addresses breakdowns that cannot wait. Maintenance & Tune-up visits keep equipment running efficiently between seasons.

Marcos Air Conditioning has been licensed since 2010 under California contractor license #950285, giving it more than 16 years in the trade. The company serves customers throughout Ontario, where extreme heat, dry conditions, and a wide range of older and newer homes all shape how systems perform.

Homeowners and property managers comparing local options should look closely at service scope, licensing, and clear communication before making a decision. Browsing listings on HVAC Service Fast is a practical way to compare Ontario contractors and reach out with questions.

Frequently Asked Questions

What services does Marcos Air Conditioning offer?

Marcos Air Conditioning provides AC Services, Heating Services, Ductwork Services, Heat Pumps, Furnace Services, Thermostat Services, Emergency HVAC, and Maintenance & Tune-up. Customers can contact the company to discuss which option fits their system and situation.

Which areas does Marcos Air Conditioning serve?

Marcos Air Conditioning serves Ontario, California, and the surrounding customers it works with in that area. Contact the company directly to confirm coverage for a specific address.

How do I choose a licensed, insured HVAC contractor in Ontario?

Start by verifying the contractor's license with the California Contractors State License Board and asking for proof of liability and workers' compensation insurance. Compare written estimates and check that the scope of work is clearly described.

What should I check before hiring an HVAC professional?

Confirm the license number, insurance coverage, and any warranty terms before work begins. Ask whether the price includes parts, labor, permits, and disposal of old equipment.

What are signs it is time to call an HVAC professional?

Call a professional if your system short cycles, makes grinding or banging noises, produces uneven temperatures, or raises energy bills without explanation. A burning smell, gas odor, or a unit that stops running entirely should be addressed promptly.

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HVAC Service Fast is an independent HVAC directory and is not affiliated with this business. Listing details are compiled from publicly available information and may be incomplete or outdated. We do not endorse or guarantee any provider — please verify licensing and insurance directly. See our Disclaimer.