Full System Replacement
We remove the old indoor and outdoor equipment, install a new matched system with a properly sized lineset, and seal the duct connections. Then we test the airflow and charge the system.
Service area
San Marcos HVAC Experts in San Marcos
San Marcos is our home base. We serve homes throughout the city with fast HVAC repair, installation, and maintenance. Whether you are near the square or out by the river, we can get to you quickly.
4.9 stars on Google
From 28 verified customer reviews.
Local, and close by
Covering San Marcos, TX & the surrounding area.
Free estimates
Tell us what needs doing and we will come out and take a look.
Local service
Proudly serving San Marcos
San Marcos is a mix of older homes near the square, mid-century ranch houses in established neighborhoods, and newer subdivisions pushing out toward the edges. The summer heat and humidity put heavy demand on air conditioning systems, and the limestone bedrock common in this area can affect how ductwork and ground units are placed. The housing stock ranges from historic cottages to modern two-story homes, so the equipment we work with varies widely from one call to the next.
Our crew loads up each morning from our base in town and heads out to the customer's property. We work on site, setting up tarps and drop cloths to protect floors and landscaping, and we run the job so that the mess stays contained. Because we are local, we know the streets and the traffic patterns, and we can get to a home near the river or out by the highway without relying on a GPS that sends us the wrong way.
San Marcos HVAC Experts works across San Marcos, TX & the surrounding area, so a crew is never far from San Marcos. Call (512) 201-1041 or request a free estimate and we’ll come out and take a look.
Local demand
What San Marcos homeowners call us for
AC Repair
Older homes in San Marcos often have undersized or aging units that struggle in the July heat. We diagnose refrigerant leaks, failing capacitors, and clogged drains on site.
AC Installation
Newer subdivisions call for matched systems sized to the square footage and duct layout. We pull the old unit, set the new condenser and coil, and test the charge.
Heating Repair
Gas furnaces in historic homes near the square can develop cracked heat exchangers or pilot issues. We check the gas pressure, clean the burners, and verify safe operation.
Maintenance
Twice-yearly tune-ups keep the system running through the humid summers and cool winters. We clean the coils, change the filter, and check the refrigerant level and electrical connections.
Typical projects
The kind of work we take on in San Marcos
Ductwork Modification
We cut into existing sheet metal ductwork to add a new supply run or return drop, seal the joints with mastic, and insulate exposed sections in unconditioned attics or crawlspaces.
Emergency Heat Pump Service
We arrive on site, check the reversing valve, measure the refrigerant pressures, and inspect the defrost board. If the unit is locked out, we reset the safeties and verify the backup heat strips engage.
What we do here
Every service, available in San Marcos
Where we work
Across San Marcos
Downtown and the Square
Historic homes and converted commercial buildings with tight attic spaces and older ductwork. We work carefully to avoid damaging original woodwork and plaster, and we often need to snake new lines through confined chases.
IH-35 Corridor
Newer apartment complexes and townhomes with rooftop units and split systems. Access can be tight in parking areas, and we coordinate with property managers to avoid blocking traffic during the job.
Outlying Acreages
Homes on larger lots east and west of town with well water and septic systems. We often run longer linesets and need to level ground units on uneven terrain, and we bring extra hose for flushing the condensate drain.
Before work starts
Permits & local rules in San Marcos
City of San Marcos Permits
Most HVAC system replacements and new installations require a permit from the City of San Marcos Building Department. The homeowner should confirm that the contractor pulls the permit and that the work is inspected before the walls are closed up.
Historic District Considerations
Homes in the San Marcos Historic District may have additional restrictions on exterior equipment placement. Check with the Historic Preservation Commission before setting a condenser on the side of the house.
Questions
San Marcos questions, answered
Reviews
What San Marcos homeowners say
4.9 average from 28 Google reviews
“I selected them after weighing a number of alternatives to use in my ventilated ceiling. Their response team was quick and effective and helped accomplish the task within less than three hours in total. Efficient and detail oriented! I'm impressed!”
Debra Patrick
Google Review
“Nothing like turning my new HVAC on a hot day. Scheduled them to maintain it while I was away and everything was done in a way that we didn't even notice anyone was there.”
Constance Simon
Google Review
“My friend shared this company with me. They were helpful and courteous when helping my mom with her system at her old house.”
Winnie Waters
Google Review
“Great atmosphere, with friendly, helpful and always reliable staff! Lucas, Luke, Raven, Jordan, Chale, Carlos, and Orlando make you feel part of the Robert Madden family. They make every visit a care free visit.”
Mike Nielsen
Google Review
Get in Touch
Call us or fill out the form below and we will get back to you quickly. We offer free estimates on all new installations and major repairs.