Finding a reliable Hvac Maintenance 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.

Licensed, insured, and guaranteed. Every service below is available in San Marcos, TX right now.
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, TXWhether 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.
Book a San Marcos, TX technicianA failed HVAC system in your San Marcos, TX office, retail location, or commercial facility means real money lost. Our commercial team handles rooftop units, large split systems, VRF and chiller work across San Marcos, TX — coordinated around your operating hours to minimize disruption. Priority response for commercial service agreement clients.
San Marcos, TX commercial pricingIndoor 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.
Heat pump service in San Marcos, TXConsistent preventive maintenance is the single biggest factor in how long an HVAC system lasts — and most San Marcos, TX homeowners underinvest in it. Two tune-ups annually, priority dispatch year-round, 15% off parts and labor, refrigerant checks, coil cleaning, and a written condition report every visit.
Maintenance plan in San Marcos, TXNo mystery, no fine print. This is the exact process for every San Marcos, TX job we take on.
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. Every credential verified before they arrive at your door.
After diagnosing your system in San Marcos, TX, your technician hands you a written, itemized quote. The number you sign is the number on your invoice. We never add charges after work is complete.
The job gets done and backed by a 90-day parts and labor guarantee documented on your invoice.
Operating standards, not slogans. Everything on this list is policy at FH HVAC in San Marcos, TX.
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.
The guarantee is on the invoice. 90 days, parts and labor. Not a handshake — a documented commitment.
Not voicemail. Not a bot. A live dispatcher who confirms your ETA before the call ends.
"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."
"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."
"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