Andy Garza

Andy Garza leads Modern Air Systems, the family-owned heating and cooling company serving San Antonio, North San Antonio and Austin. The team brings more than 25 years of hands-on HVAC experience to every repair, replacement and maintenance visit. Modern Air Systems is licensed and insured in Texas (license TACLB27872E).
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HVAC Services in San Antonio: What Local Homeowners Should Know

Living in San Antonio means asking a lot from your heating and cooling system. Our air conditioners can run for months at a time, often through long stretches of 90- and 100-degree weather. Then, just when it feels like summer will never end, a Texas cold front can roll through and suddenly the heating system […]

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Technician removing the top panel of an outdoor AC unit

Why HVAC Needs Vary Across San Antonio Neighborhoods

If you’ve lived in San Antonio for any length of time, you already know what our weather can do. Long stretches of intense summer heat, high humidity, sudden temperature swings, and the occasional cold snap can put a heating and cooling system through a lot. But something homeowners may not realize is that HVAC needs […]

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HVAC maintenance

Why San Antonio Homes Put So Much Stress on Their Air Conditioning Systems

If it feels like your air conditioner works harder in San Antonio than it would in most parts of the country, you’re probably right. Long summers, intense afternoon heat, warm nights, humidity, dust, and months of continuous cooling can put tremendous demand on residential HVAC systems throughout the San Antonio area. From older homes near […]

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Technician checking refrigerant pressure with manifold gauges on an AC unit

How Often Should You Replace Your AC System in San Antonio?

If you live in San Antonio, your air conditioner doesn’t exactly have an easy job. Long summers, high temperatures, humidity, and months of steady use can put considerably more demand on an HVAC system than it might experience in a milder climate. Deciding on a new system? See HVAC system replacement in San Antonio, or […]

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Best Smart Thermostat San Antonio: Nest vs Ecobee

San Antonio’s thermostat has to manage long stretches of triple-digit heat, indoor humidity, and, in many homes, a heat pump or multi-stage system. The right model can improve comfort and scheduling. But the best choice depends less on brand popularity than on how your equipment is wired and how your family uses each room. Ready […]

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Modern Air Systems technician working beside an outdoor HVAC unit

The Same Ladder, A New Generation

Modern Air Systems — Family Blog I spent a good chunk of my childhood in the passenger seat of my dad’s work van. Not because I had anywhere else to be — because that’s where the real education happened. We’d pull up to a job, he’d grab his clipboard, and I’d trail a step behind […]

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HVAC technician showing a high-efficiency air conditioner condenser to a San Antonio homeowner in a residential backyard

Best SEER Rating San Antonio: How to Choose the Right AC

San Antonio heat puts more hours on an air conditioner than the rating sticker alone can explain. With roughly 74 days above 100 degrees each year, the right replacement system needs to balance efficient operation, dependable comfort, and the home’s actual cooling load. A higher number is not automatically the better choice if the equipment […]

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