The Best HVAC in Round Rock, TX

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

#1

Round Rock Climate Control

4.8
(324 reviews)
Verified

A premier full-service HVAC contractor specializing in high-efficiency system installations and complex ductwork design for Central Texas homes. They are known for their expertise in handling the extreme summer heat with robust cooling solutions and are a certified dealer for top brands like Trane and Lennox.

201 E Main St, Round Rock, TX 78664

Specialties & Features

Energy Efficient System Installation
Advanced Ductwork Design & Sealing
24/7 Emergency AC Repair
Smart Thermostat Integration

Business Information

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

Lone Star HVAC & Appliance

4.6
(278 reviews)
Verified

A trusted local family-owned business with deep roots in the community. They offer a comprehensive range of heating and cooling services, from routine maintenance plans designed to prevent summer breakdowns to full furnace and AC replacements. They are praised for their honest diagnostics and customer service.

1000 N IH-35 Frontage Rd, Round Rock, TX 78681

Specialties & Features

Preventative Maintenance Plans
Furnace Repair & Installation
Honest Diagnostics & Repairs
Local & Family-Owned

Business Information

Years in Business:22 years
Licensed:Yes
Insured:Yes
#3

Texas Extreme Air

4.5
(195 reviews)
Verified

Specializes in rapid-response emergency services and HVAC solutions built for the demanding Texas climate. They focus on durability and performance, offering heavy-duty commercial and residential units. Their technicians are NATE-certified and highly skilled in solving persistent airflow and cooling issues common in older Round Rock homes.

450 Chisholm Trail Rd, Round Rock, TX 78681

Specialties & Features

24/7 Emergency Service
Heavy-Duty System Installation
NATE-Certified Technicians
Commercial & Residential Services

Business Information

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

Why These Are the Top HVAC Contractors in Round Rock

The Round Rock HVAC market is highly active due to the humid subtropical climate, characterized by long, extremely hot summers with average highs in the mid-90s and mild winters. This creates a massive demand for reliable, high-capacity air conditioning systems and preventative maintenance to avoid system failures during peak heat. The rapid growth of the city also fuels a strong demand for new HVAC installations in both new construction and existing homes seeking energy-efficient upgrades to manage soaring summer electricity bills. The top contractors differentiate themselves with 24/7 emergency service, deep expertise in heat load calculations for local conditions, and a focus on energy-efficient solutions.

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 Round Rock regulations and climate

Frequently Asked Questions About HVAC in Round Rock

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

1What is the typical cost to replace a central AC unit in a Round Rock home?

For a standard 3-5 ton system suitable for our Texas heat, full replacement costs typically range from $5,500 to $12,000, including installation. The final price depends on the system's SEER rating (higher efficiency is crucial for our long cooling season), home size, and ductwork modifications. Always get itemized estimates from local, licensed contractors, as Round Rock's hard water can also influence the choice of compatible components.

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

The absolute best time is during the spring (February-April) or fall (October-November) shoulder seasons. Scheduling during these periods ensures your system is serviced before the intense summer heat (regularly 100°F+) or occasional winter freeze, and you'll find greater technician availability and often promotional pricing. Avoid emergency calls in peak summer by planning ahead.

3Are there local regulations or rebates for HVAC systems in Round Rock I should know about?

Yes. While Texas has no statewide HVAC licensing, always verify your contractor is licensed by the City of Round Rock. More importantly, check for rebates from Pedernales Electric Cooperative (PEC) or Austin Energy, depending on your provider, for installing high-efficiency systems. These can offer significant savings, and using a higher SEER unit is a smart investment for our climate.

4How do I choose a reliable HVAC company in the Round Rock area?

Prioritize companies with a strong local presence, verified Texas licenses (like TACLB), and excellent reviews specifically about service in Round Rock's climate. They should perform a detailed Manual J load calculation for your home, as our local sun exposure and attic heat significantly impact sizing. Be wary of quotes given over the phone without an in-home assessment.

5Why does my HVAC system seem to run constantly in the summer, and is this normal for Round Rock?

During prolonged heatwaves with temperatures above 95°F, it is normal for your system to run nearly continuously to maintain set temperature, especially during peak afternoon hours. However, if it struggles to keep your home below 78°F or never reaches the set point, it may indicate an undersized unit, low refrigerant, or poor insulation—common issues in older Round Rock homes that a professional should evaluate.