Finding a reliable Ac Installation contractor in San Marcos, TX is harder than it should be. FH HVAC makes the standard clear: written pricing, active TX licensing, live dispatch 24/7, and a 90-day parts and labor guarantee on every job.

If you've dealt with contractors in San Marcos, TX who gave you a verbal estimate and handed you an invoice that didn't match — or sent someone who clearly wasn't TX licensed — you know exactly why the bar feels low in this market.
FH HVAC operates on a different standard in San Marcos, TX. Every technician we send holds an active TX license, NATE certification, and a current EPA 608 refrigerant credential. Every quote is written and itemized before any work starts. Every completed job carries a 90-day guarantee documented on your invoice. Call +1-844-586-3138 and a live dispatcher picks up — day or night, weekend or holiday.

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.
Emergency line in San Marcos, TXFrom a full system replacement to a targeted repair in your San Marcos, TX home, our residential technicians don't guess system size. Skipping this step is how contractors install wrongly sized systems that fail in 10 years instead of lasting 20. All TX permits pulled. Parts and labor both warranted.
Book a San Marcos, TX technicianCommercial 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.
San Marcos, TX commercial pricingYour San Marcos, TX home's indoor air quality challenges depend on local seasonal patterns. 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.
Air quality service in San Marcos, TXMore San Marcos, TX homeowners are choosing heat pumps and ductless systems for additions, garages, and conversions where running ductwork through existing walls isn't practical. 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.
Heat pump service in San Marcos, TXThe San Marcos, TX systems that run reliably for 20 years get maintained twice a year. The ones that fail early usually don't. Two tune-ups annually, priority dispatch year-round, 15% off parts and labor, refrigerant checks, coil cleaning, and a written condition report every visit.
Plan details: +1-844-586-3138Four steps. No surprises. That's the whole model.
Real person answers. Not voicemail. Dispatch starts immediately from a position close to San Marcos, TX.
We dispatch from the closest available tech to your San Marcos, TX location. Every credential verified before they arrive at your door.
You get the full cost in writing before anything begins in San Marcos, TX. The number you sign is the number on your invoice. We never add charges after work is complete.
90 days, parts and labor, on your invoice — not a verbal promise, a documented commitment.
These are the operating commitments behind every San Marcos, TX job. Verifiable. Documented.
Verbal estimates in San Marcos, TX that change by invoice are how contractors exploit homeowners who don't know to ask. We give you a written quote first. Itemized, signed, and binding before we begin.
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.
We maintain staffing close to San Marcos, TX so average on-site time stays under 60 minutes, even when demand is high.
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 confirms your ETA before the call ends.
"Before I gave anyone access to my home in San Marcos, TX, I asked for documentation. FH HVAC was the only contractor who had it ready without hesitation."
— 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."
"Our business in San Marcos, TX had an HVAC failure during a client event. I didn't think anyone would respond that fast on a Friday evening. FH HVAC had a commercial technician there in 50 minutes, diagnosed and fixed within two hours. Nothing we planned had to be cancelled."
"The FH HVAC maintenance plan in San Marcos, TX found a developing refrigerant leak at our annual spring check. They fixed it at the plan rate. I did the math — fixing it in July as an emergency would have cost significantly more. The plan pays for itself."

Don't sit with a broken system in San Marcos, TX while waiting on a contractor who may or may not show up. Call +1-844-586-3138 — a real dispatcher picks up, routes the nearest tech, and gives you an ETA before you hang up.
📞 Call +1-844-586-3138 — San Marcos, TX Live Dispatch