HVAC System Replacement
Replacing a worn-out AC, heat pump or furnace? We size a new split system or packaged unit for your home, offer financing and can send a same-day price estimate from a photo of your nameplate.
Modern Comfort
San Antonio HVAC: Heating & Air Conditioning Services
Serving San Antonio and Austin TX
Family-owned San Antonio HVAC company providing residential heating and cooling backed by 25+ years of experience, with a focus on comfort, efficiency and long-term reliability from our family to yours.
Licensed & Insured · License #TACLB27872E
Rated by Our Customers on Google
See What San Antonio Homeowners Are Saying
Window was 9-10am and they showed up at 9am! Timing was great and the diagnostic was thorough and efficient. No upsell, just what needed attention. I’ll be calling back when I need service.
Ashley WaclawiakGoogle reviewCalled them on Labor Day bc the drain pipe was leaking. They were very responsive in spite of the holiday and were able to get to the property quickly. They were communicative and very easy to work with. They have a full report on the overall health of the system. They’ll go the extra mile for their clients. Highly recommend them
Andrea DeniseGoogle reviewCalled Modern Air, and they came out right away to diagnose and fix the problem which was a huge help in this blistering heat! Robert was awesome! He walked us through everything, then got to work immediately. Now our system is blowing super cold again. What a relief!!! We would strongly recommend Modern Air to anyone.
Sar DalGoogle reviewModern air systems replaced 2 units at my house. Not only did they give the best price, the service was first class. The owner came to inspect work and he was first class. Go with modern air!!!
Ruby CavazosGoogle reviewThey came out, assessed the problem, and provided a solution. Repair was completed in a timely manner. Robert is a pro! Extremely satisfied.
Chuck McCannGoogle reviewAbout Modern Air Systems
Modern Air Systems — family-owned heating and cooling in San Antonio, led by an owner with 25+ years of HVAC experience.
About Our Family BusinessHeating & Air Conditioning
San Antonio HVAC Services for Heating & Cooling
San Antonio homeowners rely on their heating and cooling systems through long summers, high temperatures and changing South Texas weather. As a family-owned San Antonio HVAC company, Modern Air Systems provides residential heating and air conditioning services designed to keep homes comfortable, efficient and dependable throughout the year.
With more than 25 years of HVAC experience, our approach is simple: understand what is happening with your system, explain your options clearly and recommend a solution that makes sense for your home. Sometimes that means repairing the equipment you already have. Other times, an aging or unreliable system may make replacement the better long-term choice.
AC Repair
If your air conditioner is not cooling properly, running constantly, making unusual noises or struggling to keep up with the San Antonio heat, our team can diagnose the problem and help restore dependable cooling.
AC Replacement
When an older air conditioning system becomes unreliable or expensive to maintain, replacement may be worth considering. We help homeowners choose properly sized, efficient equipment based on the needs of the home rather than simply replacing what was there before.
HVAC Maintenance & Comfort Club
Routine HVAC maintenance can help identify developing problems, support efficient operation and keep your heating and cooling equipment better prepared for periods of heavy use.
Heating Services
San Antonio may be known for hot summers, but dependable heating still matters when temperatures drop. Modern Air Systems provides residential heating service to help keep local homes comfortable throughout the cooler months.
Light Commercial HVAC
Rooftop and packaged unit repair, replacement and maintenance for small businesses, property managers and commercial buildings.
Why Local San Antonio HVAC Experience Matters
Air conditioning systems in San Antonio often operate for extended periods during the cooling season. That means equipment selection, installation quality, airflow and maintenance can all have a major impact on comfort and long-term performance.
Our team understands the demands placed on HVAC systems in South Texas and works with homeowners to find practical solutions for their comfort needs, whether that involves service, maintenance or a new heating and cooling system.
Explore Our HVAC ServicesCommon San Antonio HVAC Questions
How long does an AC system last in San Antonio?
Many central air conditioning systems provide around 10 to 15 years of service, although maintenance, installation quality, usage and equipment condition can all affect lifespan.
Should I repair or replace my air conditioner?
It depends on the age and condition of the system, the cost of the repair and how reliably the equipment has been performing. A relatively minor repair may make sense, while a major repair on an older system may make replacement worth considering.
How often should HVAC equipment be serviced?
Regular professional maintenance helps identify problems early and supports efficient operation. Many homeowners choose to have cooling equipment checked before peak summer use and heating equipment checked before colder weather.
Featured Press
As Seen on San Antonio TV
“The lowest price up front isn’t always the lowest price in the long run.”
Modern Air Systems Featured on KABB - WOAI
Modern Air Systems Featured on KENS 5
Watch the full feature on KENS 5Need heating or cooling help?
Call the office nearest you or book a visit online.