Get matched with top heating and air conditioning pros in Round Rock, TX

O2Kool has been Austin’s premier HVAC company for the past 15 years and we’ve shown no signs of cooling down. Our ability to confidently assess, install, repair,and upkeep our units, sets us apart from all other HVAC companies. Our experienced technicians are on call 24/7 in order to provide optimum customer service to each and every one of our clients.\nWe aim to fulfill our clients’ HVAC needs by promising reliable, honest, quality service but we don’t stop there. Our technicians will educate our customers on the process of maintaining their units in order to maximize their a/c and heating experience.

Welcome to Cool Crew ATX! Your Trusted HVAC Experts! We provide top-quality heating, cooling, and refrigeration services for homes and businesses. With 30+ years of expertise, Chief Technician Yamel Gonzales and our certified team deliver reliable installations, repairs, and maintenance to keep you comfortable year-round.\n\nWhy Choose Us?\n- Comprehensive HVAC & refrigeration solutions\n- Customer-first approach with integrity & professionalism\n- Energy-efficient systems to cut costs & improve comfort\n- Excellent ratings with 500+ hires in recent years\n\nServices We Offer: Furnace repair/installation, AC tune-ups & replacements, commercial refrigeration, and preventive maintenance.\n\nWhether you need emergency repairs or a custom system, Cool Crew ATX ensures every job is done right. Call 737-637-3900 today to schedule your service and stay comfortable all year long!

"I contacted Petrocelli Services and relayed potential HVAC issues raised by a home inspector on a property my wife and I were purchasing in Austin, TX. I spoke with both Krystal Mitchell and owner Joe Petrocelli. We needed the HVAC inspection performed quickly to stay within a 'purchase option' time period. Petrocelli Services were extremely responsive in scheduling, conducting an inspection and assuring us that the home's HVAC system had no issues to be concerned over. Joe Petrocelli the owner personally talked with me and relayed there was no cause for any concerns, but if anything ever arose in the future to keep them in mind :-)… We certainly will keep Petrocelli Services in mind, and have no reservations in recommending them to anyone requiring HVAC service in the Austin area. They are tremendous!!!"

INDOOR COMFORT EXPERTS A-C proudly serves its customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today!

"Have used A+ for several years and they have always been highly professional, cost competitive and do great work. I have used them for HVAC work as well as home solutions repairs."

"Thomas was excellent about responding to our request for an HVAC system bid, and when chosen, they were able to schedule our installation within a couple of days. They asked our needs and made recommendations for the right equipment for our home. The crew was efficient, polite, and neat. I could not ask for more!"

At Aire Geeks Inc., we keep it simple: experienced technicians, honest recommendations, and dependable results. Our team brings 25+ years of hands-on HVAC expertise and more than a decade of success running service-based businesses in Texas.\n\nOur HVAC services in Round Rock focus on whole-home health, not quick sales. With us, you get honest guidance, expert craftsmanship, and quality work every single time.

"David did a great job on our HVAC duct system and air handler"

Heating & Air Paramedics of Greater Austin provides residential and light commercial heating, ventilation, and air conditioning (HVAC) services throughout the Greater Austin area, including system diagnostics, repairs, preventive maintenance, and full equipment replacement. The company is committed to excellence in every aspect of its operations, upholding the highest standards of integrity, fairness, honesty, and personal responsibility. Its distinction lies in the quality of service delivered to customers, driven by accurate technical knowledge and skilled workmanship. Above all, Heating & Air Paramedics of Greater Austin prioritizes customer interests, making their needs and concerns the foundation of its business

\nX-TECH AC and Heating LLC provides premier residential and commercial HVAC and refrigeration services across Leander and the Greater Austin area. Backed by over 30 years of mechanical trade experience, our licensed technicians specialize in complete AC installations, gas heating systems, Mitsubishi mini-splits, heat pumps, system tune-ups, and complex system issues.\n\nWe operate with total transparency, upfront pricing, and a commitment to getting the job done right the first time. Whether you need an emergency repair, a system replacement, or routine maintenance, we deliver reliable, high-quality climate control tailored to your home or business. Bilingual service available.\n