The Best HVAC in Castroville, TX

Compare the highest-rated hvac professionals in Castroville, Texas. All contractors are licensed, insured, and verified through our rigorous screening process.

#1

Alamo Comfort Solutions

4.8
(127 reviews)
Verified

A full-service HVAC provider specializing in high-efficiency system installations and complex ductwork design for Castroville's historic homes. They are Carrier Factory Authorized Dealers and focus on solving humidity control issues prevalent in the region.

1202 Fiorella Street, Castroville, TX 78009

Specialties & Features

Energy Efficiency Upgrades
Historic Home HVAC
Ductwork Design & Sealing
24/7 Emergency Service
Humidity Control Systems

Business Information

Years in Business:18 years
Licensed:Yes
Insured:Yes
#2

Lone Star Climate Control

4.6
(94 reviews)
Verified

Known for reliable 24/7 emergency repairs and comprehensive maintenance plans tailored to the harsh South Texas summer heat. They work with Trane and Lennox systems and are experts in heat pump servicing, which is increasingly popular for energy-conscious homeowners.

901 Paris Street, Castroville, TX 78009

Specialties & Features

24/7 Emergency Repairs
Preventive Maintenance Plans
Heat Pump Service
Furnace Repair & Installation
System Diagnostics

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes
#3

Medina Valley Air & Heating

4.5
(78 reviews)
Verified

A local, family-owned operation with deep roots in the community. They excel in straightforward system replacements, honest repair diagnostics, and providing cost-effective solutions for both older and newer HVAC systems. They are particularly praised for their customer service and fair pricing.

1506 Angelo Street, Castroville, TX 78009

Specialties & Features

HVAC System Replacement
Honest Repair Diagnostics
Residential & Light Commercial
Air Quality Solutions
Local & Family-Owned

Business Information

Years in Business:22 years
Licensed:Yes
Insured:Yes

Why These Are the Top HVAC Contractors in Castroville

The HVAC market in Castroville, TX, is heavily influenced by a hot-humid subtropical climate (Köppen Cfa), characterized by long, intensely hot summers and short, mild winters. This creates extreme demand for reliable and high-capacity air conditioning systems from May through September. Humidity control is a major concern for home comfort and preventing mold. Winters are mild, but cold snaps create demand for furnace and heat pump services. The prevalence of historic homes also creates a niche for contractors skilled in retrofitting modern, efficient systems into older structures without compromising aesthetics. The market is competitive among a small pool of local providers who emphasize 24/7 emergency service during peak season.

High Ratings

4.7+ star average from verified customer reviews

Fully Licensed

All contractors are properly licensed and insured

Proven Experience

10+ years average experience in the industry

Local Experts

Familiar with Castroville regulations and climate

Frequently Asked Questions About HVAC in Castroville

Get answers to common questions about hvac services in Castroville, Texas.

1What is the typical cost range for replacing a central AC unit in a Castroville home?

For a standard single-family home in Castroville, a full AC replacement typically ranges from $5,500 to $12,000. The final cost depends heavily on the unit's size (tonnage), efficiency rating (SEER), and the complexity of the installation, such as ductwork modifications. Given our intense South Texas summers, investing in a higher SEER unit (16+) can offer significant long-term savings on energy bills, despite a higher upfront cost.

2When is the best time to schedule HVAC maintenance or replacement in Castroville?

The absolute best time is during the mild spring (February-April) or fall (October-November) seasons. Scheduling during these windows ensures your system is serviced and ready for the peak summer heat or occasional winter chill, and you'll find greater technician availability and potentially better pricing. Waiting until the first major heatwave in May or June often leads to emergency service calls, longer wait times, and higher costs.

3Are there any local Castroville or Texas-specific regulations I should know about for HVAC work?

Yes. In Texas, all HVAC contractors must be licensed by the Texas Department of Licensing and Regulation (TDLR). Always verify a contractor's TDLR license before hiring. Furthermore, Castroville and Medina County adhere to the International Residential Code (IRC) and may have specific permit requirements for new installations or major replacements, which a reputable local contractor will handle for you.

4How do I choose a reliable HVAC contractor in the Castroville area?

Prioritize locally established companies with strong community reputations, as they understand our specific climate challenges. Ensure they are TDLR-licensed, insured, and provide detailed, written estimates. Ask for references from neighbors and check reviews specific to their performance during Castroville's extreme summer conditions. A trustworthy contractor will perform a detailed load calculation (Manual J) for your home, not just recommend the same size unit you already have.

5My system runs constantly on hot Castroville afternoons. Is this normal, or a sign of a problem?

During extreme heat waves where temperatures exceed 100°F, it is normal for a properly sized system to run in longer cycles to maintain temperature. However, if it runs non-stop without cooling your home adequately (e.g., unable to hold a 78°F setting), it indicates a problem. Common local issues include refrigerant leaks, dirty condenser coils clogged with Texas pollen and dust, or an undersized unit. This warrants a professional diagnostic visit.