Indoor Air Quality Testing in San Marcos

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Breathe Easier with Cleaner Indoor Air

Your home should be a safe, comfortable place—but poor indoor air quality can cause allergies, asthma flare-ups, or general discomfort. At Master Flow Heating and Air Conditioning, we provide indoor air quality testing for homeowners in San Marcos to identify pollutants, allergens, and humidity issues before they affect your health.

With advanced diagnostics and expert recommendations, we help you create a cleaner, healthier indoor environment.

What Our Testing Covers

Our indoor air quality assessment includes a detailed inspection of:

  • Particulate pollutants such as dust, pollen, and pet dander

  • Humidity levels and moisture concerns

  • Filtration efficiency of your current HVAC system

  • Airflow restrictions and ductwork issues

  • Presence of volatile organic compounds and air contaminants

Once testing is complete, we walk you through the results and discuss the best path forward for your home.

Solutions We Provide

  • Based on the results of your indoor air quality test, we offer solutions that may include:


    • Whole-home air purifiers and filtration upgrades
    • HEPA filter integration with your HVAC system
    • Humidifiers or dehumidifiers to balance moisture levels
    • UV light systems to reduce bacteria, mold, and viruses
    • Duct inspection and cleaning to eliminate buildup

    Our solutions are designed to integrate with your existing HVAC system and improve the quality of air for every room.

Why San Marcos Homeowners Trust Master Flow

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Local service backed by years of HVAC experience

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Comprehensive diagnostics with actionable insights

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Fully licensed and insured air quality expert

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Personalized recommendations with clear pricing

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High customer satisfaction ratings in San Marcos

We focus on lasting air quality improvements, not just temporary fixes.

Testimonials from San Marcos Residents

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"We had a musty smell in our home and constant allergy problems. Master Flow identified the issue and installed a purifier. Huge improvement."

 –  Google Review

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"They were very knowledgeable and professional. The air quality is noticeably better and we feel more comfortable in our home."

 –  Google Review

These reviews are from actual Master Flow customers in the San Marcos area.

Schedule Indoor Air Quality Testing in San Marcos

Ready to breathe cleaner, healthier air? Contact Master Flow Heating and Air Conditioning today for professional indoor air quality testing and solutions in San Marcos.