Services

From a same-day repair to a full system replacement, Modern Air System keeps San Antonio comfortable year-round. Our certified technicians service all major brands for both homes and businesses, with honest, upfront pricing and no surprises.

Air Conditioning Service

Fast, reliable AC repair, maintenance, and installation to keep you cool through San Antonio's triple-digit summers. We service all major brands.

Air Source Heat Pump

Efficient heating and cooling from a single system. We install, replace, and service heat pumps to deliver year-round comfort.

Streamline Heating

Dependable furnace and heating installation, repair, and maintenance to keep your home or business warm and safe when temperatures drop.

Duct Cleaning & Repair

Cleaning, sealing, and repair of ductwork to improve airflow, lower energy bills, and protect your indoor air quality. Includes static pressure testing to find and fix problem areas.

Ductless Cooling

Flexible, energy-efficient mini-split cooling for spaces without ductwork — ideal for additions, garages, sunrooms, and older homes where running ducts isn't practical.

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WHAT SETS US APART

Fast Repairs

Same-day repairs on most service calls to keep you comfortable.

Honest Pricing

Upfront, honest pricing — approved by you before we start any work.

Vetted Team

Certified, background-checked technicians you can feel confident about.

New Systems

Free estimates on new system installs and replacements.

Smart Financing

Flexible financing options available to fit your family's budget.

Full Service

Reliable residential and commercial service across South and Central Texas.