Professional heating & air conditioning services you can trust. Available 24/7 for emergencies.
"A true master of his trade. Quick to respond, diligent in his work, and brings outstanding customer service."
BBB Review · Jan 2026"Repaired my mother's AC unit. The service was prompt, precise and the pricing was excellent and transparent."
BBB Review · Dec 2025"We had a mini-split installed in our game room. Installation was great and the unit works perfect."
BBB Review · Dec 2025"SY HVAC installed my AC unit. They were competitively priced. Did an outstanding job during installation."
BBB Review · Nov 2025"A great company. Reliable and on time. I highly recommend them to anyone needing HVAC work."
BBB Review · Sep 2025"Very professional and quick. He was professional and made it a comfortable environment."
BBB Review · Aug 2025"Helped me with a few rooms that would never really cool off. He educated me through the entire process."
BBB Review"I can't say enough great things about Simon and SY HVAC Services. From the very first interaction, the customer service was exceptional — friendly, responsive, and genuinely focused on helping."
Google Review · Apr 2026"A true master of his trade. Quick to respond, diligent in his work, and brings outstanding customer service."
BBB Review · Jan 2026"Repaired my mother's AC unit. The service was prompt, precise and the pricing was excellent and transparent."
BBB Review · Dec 2025"We had a mini-split installed in our game room. Installation was great and the unit works perfect."
BBB Review · Dec 2025"SY HVAC installed my AC unit. They were competitively priced. Did an outstanding job during installation."
BBB Review · Nov 2025"A great company. Reliable and on time. I highly recommend them to anyone needing HVAC work."
BBB Review · Sep 2025"Very professional and quick. He was professional and made it a comfortable environment."
BBB Review · Aug 2025"Helped me with a few rooms that would never really cool off. He educated me through the entire process."
BBB Review"I can't say enough great things about Simon and SY HVAC Services. From the very first interaction, the customer service was exceptional — friendly, responsive, and genuinely focused on helping."
Google Review · Apr 2026At SY HVAC, we believe every home and business deserves reliable comfort. Our team of certified technicians delivers top-quality heating and cooling solutions with transparency, fair pricing, and a commitment to your complete satisfaction.
Complete home comfort solutions from routine maintenance to full system installations. We treat your home like our own.
Keep your business running smoothly with our commercial HVAC expertise. From offices to warehouses, we've got you covered.
HVAC emergencies don't wait, and neither do we. Our team is available around the clock to restore your comfort fast.
Expert air conditioning repair and brand-new system installations to keep you cool all summer long.
Learn More →Furnace repair, heat pump installation, and heating maintenance to keep your home warm when it matters most.
Learn More →Mini-split and ductless solutions for rooms without ductwork. Efficient zoned comfort where you need it.
Learn More →Upgrade to smart climate control. We install and configure the latest thermostats for maximum efficiency and savings.
Learn More →Preventative maintenance that extends equipment life, improves efficiency, and prevents costly breakdowns.
Learn More →Duct cleaning, sealing, and repair. Improve your air quality and system efficiency with professional duct work.
Learn More →No hidden fees or surprises. We provide transparent quotes before any work begins so you always know what to expect.
Our NATE-certified team undergoes continuous training to stay current with the latest HVAC technology and best practices.
We understand comfort can't wait. Most service calls are completed the same day you reach out to us.
We stand behind every job with a 100% satisfaction guarantee. If you're not happy, we'll make it right.
Strange noises, weak airflow, or rising energy bills? Here's how to know when it's time to call a pro.
A quick pre-season checklist to make sure your cooling system can handle the heat ahead.
Not sure if it's worth fixing? Here are the key factors to help you decide on repair or replacement.
Mon – Sat: 8 AM – 6 PM
Sunday: Closed
25847 Big Bluestem
San Antonio, TX 78261
