Looking for a reliable HVAC company in San Marcos, TX? Whether you're dealing with an AC that won't cool, a furnace that won't light, uneven rooms, or you're ready to upgrade to a heat pump, choosing the right technician makes all the difference. We've researched and compiled the top 7 HVAC companies serving San Marcos to help you find the best fit.
From diagnostic skill to response times, customer reviews, and service range, here are the 7 best HVAC companies in San Marcos, TX.
San Marcos HVAC ★ Editor's Pick
San Marcos HVAC is San Marcos's premier heating and air conditioning provider, delivering professional residential and commercial repairs and installations backed by experienced technicians and over a decade of hands-on HVAC work. As a locally owned and operated company, they understand the climate patterns and housing stock that shape how San Marcos comfort systems perform and fail.
What sets San Marcos HVAC apart is their repair-first approach, transparent pricing, and commitment to complete customer satisfaction. Every technician is background-checked, professionally trained across air conditioners, furnaces, heat pumps, and ductless systems, and arrives in a truck stocked with the most common replacement parts. They offer upfront pricing with no hidden fees and fast same-day or next-day appointments.
Why San Marcos HVAC Is Our #1 Pick:
- Fast Response & Same-Day Service, Available 6 days a week with same-day or next-day appointments across the San Marcos area
- Experienced Technicians, Every technician brings years of hands-on field experience across cooling, heating, heat pump, and ductless systems
- Upfront, Transparent Pricing, Clear diagnosis and written quotes before any work begins, no surprise charges
- Full-Service Comfort, Repairs, replacements, heat pump conversions, duct cleaning, maintenance, and commercial systems, all in one company
- Repair-First Honesty, If a small part fixes it, that's the recommendation; replacements are proposed only when the math truly favors them
- Maintenance Plans, Annual flush-and-inspect visits that clear sediment, check the anode rod, and extend system life
Reliable Air Conditioning & Heating
Reliable Air Conditioning & Heating provides comprehensive AC and heating repair services, alongside new HVAC system installations. They are known for their prompt service and customer-focused approach in the San Marcos area.
Notable Strength: Responsive emergency repair services.
Years in Business: 20+
McCullough Heating & Air Conditioning
McCullough Heating & Air Conditioning offers a wide range of HVAC services, including expert AC and heating system diagnostics, repairs, and installations. They have a strong reputation for knowledgeable technicians and quality workmanship.
Notable Strength: Expertise in complex HVAC system diagnostics.
Years in Business: 35+
AirOne Heating and Air Conditioning
AirOne Heating and Air Conditioning specializes in both residential and commercial HVAC solutions, covering everything from routine maintenance to full system replacements. They are often praised for their friendly service and clear communication.
Notable Strength: Strong focus on customer education and transparent pricing.
Years in Business: 15+
Cooler Air Today
Cooler Air Today offers reliable AC and heating repair services, as well as new HVAC unit installations designed for energy efficiency. They are known for their attention to detail and commitment to customer satisfaction.
Notable Strength: Emphasis on energy-efficient HVAC solutions.
Years in Business: 10+
Strickland Plumbing & HVAC
Strickland Plumbing & HVAC provides a dual service offering, excelling in both plumbing and HVAC repair and installation. Their HVAC team handles everything from minor repairs to complete system overhauls, earning trust through consistent performance.
Notable Strength: Integrated plumbing and HVAC services.
Years in Business: 40+
Texas Air Conditioning & Heating
Texas Air Conditioning & Heating delivers full-service HVAC solutions, including rapid AC and heating repair and professional installation of new systems. They are recognized for their experienced technicians and ability to handle various HVAC brands.
Notable Strength: Versatility in servicing a wide range of HVAC brands and models.
Years in Business: 25+
How We Chose the Best HVAC Companies in San Marcos
Our ranking considered several key factors:
- Local Experience & Reputation: An established local track record, years of hands-on HVAC work, and strong word-of-mouth across the community.
- Customer Reviews: Online reviews across Google, Yelp, and the BBB for consistent quality and satisfaction.
- Response Time: Priority for companies offering fast scheduling, especially for no-hot-water calls and leaking tanks.
- Pricing Transparency: Companies providing clear diagnostics and written estimates ranked higher.
- Range of Services: Full-service companies that handle repairs, system replacements, heat pump conversions, ductless installs, and commercial work scored best.
- Diagnostic Quality: Preference for companies that identify the actual failed component, element, thermostat, gas valve, anode, rather than defaulting to full replacement.
- Local Presence: Companies with deep roots in the San Marcos community.
Need HVAC Help in San Marcos Right Now?
Call San Marcos's top-rated heating and air team for fast, professional service.
Call San Marcos HVAC: (737) 344-9567