Replacing an Undersized System
We remove an old unit that never kept up with the cooling load, install a correctly sized condenser and air handler, and run new line sets and ductwork to match the home's actual needs.
Service area
San Marcos HVAC Experts in Martindale
Martindale is a small community about 10 minutes southeast of San Marcos. We are familiar with the older homes in the area and the unique HVAC challenges they present. We are happy to make the short drive.
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 Martindale
Martindale sits along the San Marcos River, a tight-knit community with a mix of older frame homes, historic houses, and newer single-family builds. The humid subtropical climate here means heavy AC use from spring through fall, and the mature trees that shade many lots can also trap heat and moisture around outdoor units. The older housing stock often has undersized ductwork or original window units that need upgrading to modern central systems. The low-lying ground near the river also means some homes face drainage issues around slab foundations, which affects how we route refrigerant lines and condensate drains.
Our crew loads the truck with everything needed for a full day on site, from recovery machines to sheet metal tools, and drives the short 10 minutes from San Marcos. We work in tight crawlspaces and attics common in older Martindale homes, laying down drop cloths and wearing boot covers to keep interiors clean. We clear debris and old equipment as we go, hauling it off at the end of the day. Being this close to town means we can head back to the shop quickly if a job needs a part we didn't anticipate, keeping delays short for the homeowner.
San Marcos HVAC Experts works across San Marcos, TX & the surrounding area, so a crew is never far from Martindale. Call (512) 201-1041 or request a free estimate and we’ll come out and take a look.
Local demand
What Martindale homeowners call us for
AC Repair
We diagnose and repair failed compressors, leaky coils, and refrigerant leaks in older Martindale homes, many with original R-22 systems that need careful handling.
AC Installation
We replace outdated window units and undersized central systems with properly sized split systems, accounting for the shade and humidity that affect load calculations in this river town.
Ductwork
We replace or seal leaky galvanized ductwork in older crawlspaces and attics, improving airflow and efficiency in homes where the original runs were never insulated.
Maintenance
We perform seasonal tune-ups that include cleaning coils, checking refrigerant pressures, and tightening electrical connections, keeping systems running through the long cooling season.
Typical projects
The kind of work we take on in Martindale
Sealing Leaky Ductwork
We access crawlspaces and attics, locate gaps and disconnections in the metal duct runs, apply mastic and foil tape, and wrap exposed sections with insulation to stop conditioned air from escaping.
Converting from Window Units to Central Air
We cut in new supply and return ducts through closets and floor joists, mount an air handler in the attic or a utility room, and install a condenser on a pad outside, tying it all into the existing electrical panel.
What we do here
Every service, available in Martindale
Where we work
Across Martindale
Town Centre
Along Main Street and the historic district, we work on older homes with limited attic access and original ductwork, often needing custom transitions to fit modern equipment into tight mechanical closets.
River Road Corridor
Homes along River Road and the surrounding low-lying lots require careful placement of outdoor units on raised pads to keep them above flood levels, and we seal all low-voltage wiring against moisture.
Outlying Acreage
On the larger lots east of town, we install and service systems in newer slab-on-grade homes, running longer line sets and ensuring proper refrigerant charge over the greater distances.
Before work starts
Permits & local rules in Martindale
Building Permit for New Equipment
The City of Martindale requires a mechanical permit for any new AC or heating installation. We handle the paperwork, but the homeowner should confirm that the property's electrical service can handle the new load before we start.
Historic District Approvals
Homes in the historic district may need a certificate of appropriateness from the city's historic commission before we can mount an outdoor unit or run new ductwork visible from the street. Check with the city planner first.
Questions
Martindale 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.