The question isn't whether you need Hvac service in San Marcos, TX — it's which contractor you trust to do it right. FH HVAC's answer: a written quote before we start, a TX-licensed technician at your door fast, and a 90-day guarantee documented on every invoice.

The Hvac contractor market in San Marcos, TX has a real accountability problem. Most homeowners have experienced it: verbal estimates, inconsistent technician quality, invoices that surprise them.
When you call FH HVAC in San Marcos, TX, you get a TX-licensed technician with NATE certification and EPA 608 credentials. Your quote is in writing before we start. Your guarantee is on your invoice. Calling +1-844-586-3138 at any hour connects you to a real person who confirms your ETA before you hang up.

All six services are available in San Marcos, TX — performed by TX-licensed technicians and backed by written pricing and our 90-day guarantee.
System failure in San Marcos, TX doesn't wait for business hours. A live dispatcher at +1-844-586-3138 routes the nearest TX-licensed tech to your location and gives you an ETA before you hang up. Our trucks carry the parts most common in San Marcos, TX's HVAC systems, so first-visit repairs are the standard, not the exception.
San Marcos, TX Emergency: +1-844-586-3138Whether your San Marcos, TX home needs a new system or a specific repair, our residential team starts with the Manual J load calculation that determines what your home actually needs. Every installation starts with a proper Manual J load calculation — the step that prevents the common mistake of oversizing, which causes short-cycling and early system failure. All TX permits pulled. Parts and labor both warranted.
Schedule San Marcos, TX home serviceCommercial HVAC failure in San Marcos, TX costs more than discomfort — it costs you customers, productivity, and sometimes compliance. We handle rooftop units, VRF systems, large split systems, and ongoing maintenance agreements for San Marcos, TX commercial properties, scheduled around your business operations. Priority response for commercial service agreement clients.
Commercial HVAC in San Marcos, TXIndoor air quality in San Marcos, TX is affected by the specific seasonal conditions here — humidity patterns, allergen load, and how airtight homes tend to be in this climate. We install HEPA filtration upgrades, UV germicidal systems, dehumidifiers, humidifiers, and ERVs configured for this region's conditions. Most impactful for households managing asthma or recurring respiratory conditions.
Indoor air quality: +1-844-586-3138Heat pump and ductless mini-split demand in San Marcos, TX has grown as homeowners understand the efficiency and versatility advantages. Our San Marcos, TX technicians are factory-trained on all major brands — Mitsubishi, Daikin, Fujitsu, LG, Bosch — and handle everything from initial installation through refrigerant service.
Ductless install: +1-844-586-3138The San Marcos, TX systems that run reliably for 20 years get maintained twice a year. The ones that fail early usually don't. Our San Marcos, TX maintenance plan includes two full tune-ups per year, priority scheduling during peak season, a 15% discount on any repair parts and labor, and a written condition report after every visit.
Plan details: +1-844-586-3138Four steps. No surprises. That's the whole model.
A live dispatcher picks up in San Marcos, TX — day or night, no exceptions. Not a bot. Not a callback queue. A real person who starts routing a technician immediately.
The nearest TX-licensed technician is routed to your San Marcos, TX address. Background-checked, NATE certified, EPA 608 credentialed.
You get the full cost in writing before anything begins in San Marcos, TX. Nothing starts until you've reviewed and approved it in writing. What you approve is what you pay.
The job gets done and backed by a 90-day parts and labor guarantee documented on your invoice.
These are the operating commitments behind every San Marcos, TX job. Verifiable. Documented.
What you approve is what you pay. Always. No post-job surprises in San Marcos, TX.
Every FH HVAC technician in San Marcos, TX carries an active TX contractor license. Ask for documentation before any contractor starts work on your system.
Regional technician positioning throughout San Marcos, TX keeps response times under 60 minutes in most markets — including during peak summer and winter demand.
Every San Marcos, TX repair we complete carries a 90-day parts and labor guarantee printed on your invoice. If it fails, we return at no charge — no debate required.
Not voicemail. Not a bot. A live dispatcher who has a technician moving toward your San Marcos, TX address within minutes.
"I asked for proof of TX licensing before letting anyone in. Two contractors couldn't produce it. FH HVAC sent documentation in under two minutes."
— Verified customer, San Marcos, TX"Called FH HVAC in San Marcos, TX on a Saturday afternoon, had a tech at the door in under an hour, written quote before they started, invoice matched the quote exactly. I've never had an easier contractor experience in San Marcos, TX."
"San Marcos, TX commercial HVAC emergency on a Friday. FH HVAC had someone there fast, correctly diagnosed a failed capacitor, and had the system running before the event was compromised. Exceptional response time for a commercial call."
"Two years on the maintenance plan in San Marcos, TX. At the spring tune-up this year they found a slow refrigerant leak in my evaporator coil. Caught and fixed at the maintenance pricing. That would have been an emergency call in August at double the cost."

FH HVAC covers all of San Marcos, TX with licensed technicians, written upfront pricing, and live 24/7 dispatch. One call. Real ETA. No runaround.
📞 Call +1-844-586-3138 — San Marcos, TX Live Dispatch