HVAC Repair in Castroville, TX

Based in Castroville. Serving Medina Valley Homeowners for Over 34 Years.

When your air conditioner stops working in the middle of a South Texas summer, you need a repair company that’s close, experienced, and ready to respond. A/C Technical Services is based right here in Castroville and has served residential homeowners across the Medina Valley area for over 34 years. Gregg Zinsmeyer, who leads our technical team, has been in the HVAC industry for 52 years, and that depth of hands-on knowledge shows in every service call we run.

We offer same-day service options, 24/7 emergency availability, and free estimates for homeowners in Castroville and the surrounding communities. Every job is backed by a warranty, and our team is bilingual. Hablamos Español.

If your system isn’t cooling, heating, or running the way it should, call us now at (210) 791-8172 to schedule HVAC repair in Castroville.

Residential HVAC Repair & Maintenance Services We Offer

Homes in Castroville range from historic properties near Old Town to newer builds along the residential streets east of Highway 90. That variety means HVAC systems across the area differ significantly in age, layout, and condition. River-adjacent properties near the Medina River can also face elevated humidity, pushing systems harder to remove moisture in addition to cooling. We account for all of it.

Our licensed and insured technicians service the full range of residential HVAC equipment found in Medina County homes:

• Central split systems: the most common configuration in local homes, including both the indoor air handler and outdoor condensing unit
• Ductless mini-splits: especially common in older Castroville homes where adding ductwork isn’t practical
• Heat pumps and packaged systems: diagnosed and repaired to manufacturer standards
• Custom installations: we have the sheet metal fabrication capability and design background to work with homes that have unconventional layouts or later additions

Common repair calls we handle include short cycling, refrigerant loss, clogged condensate drain lines, and worn capacitors or contactors accelerated by long South Texas cooling seasons. We also perform refrigerant checks, indoor air quality assessments, and full annual maintenance. For homeowners weighing repair against replacement, Gregg’s 52 years of experience means you get an honest read on whether a repair makes long-term sense or whether planning for a new system may be the smarter path. A/C Technical Services is ABC Contractor Accredited, reflecting our commitment to professional standards and ongoing training.

What to Expect During a Residential HVAC Repair Call

We show up on time. We know how disruptive a broken system is when the weather is unforgiving. When your technician arrives, they’ll diagnose the issue on-site, check all relevant system components, and review previous maintenance records when available. Older Castroville homes sometimes have comfort inconsistencies tied to duct configuration or system sizing, so we diagnose the actual cause rather than applying a one-size-fits-all fix.

Once we know what’s wrong, we explain your options clearly so you can make an informed decision. We don’t move forward without your approval, and we keep you updated at every step. Straightforward repairs are often completed the same day. When parts are needed, we give you a realistic timeline upfront so you’re not left guessing. Our goal on every call is to resolve the issue efficiently and reduce the chance of a repeat problem.

Why Castroville Homeowners Choose A/C Technical Services

Gregg and Carol Zinsmeyer opened A/C Technical Services in 1991 and have built the business on one standard: complete satisfaction for every customer. As a locally owned company physically based in Castroville, we’re neighbors to the homeowners we serve. That local presence means faster response times, familiarity with the conditions homes in this area face, and a long-term relationship with customers who call us back for the life of their equipment.

Gregg is active in local and national industry organizations and has built knowledge across system types through 52 years of hands-on work. When you’re evaluating HVAC contractors, years in business, familiarity with local climate conditions, and a contractor’s ability to support your equipment over time matter. When you call A/C Technical Services for HVAC repair in Castroville, you get that experience working directly on your home.

Schedule HVAC Repair or Maintenance in Castroville

Don’t wait out a failing system when help is this close. A/C Technical Services offers free estimates, same-day appointments when available, and 24/7 emergency service for Castroville homeowners who need urgent repairs.

Call us at (210) 791-8172 or reach out online to schedule your service visit. We’re ready when you need us.