Best HVAC Companies in Round Rock, Texas

Filter Swap offers commercial HVAC/R maintenance in the Austin region, focusing on timely filter replacement, coil cleaning, and belt‑and‑drain line repairs. Their service includes an 8‑point inspection, photo documentation, and custom filter fabrication from a stock of over 100 types. Clients report reliable, documented work and transparent, free quotes service.

Austin Cool Air holds a 4.9 rating from 54 reviewers, offering residential, commercial, and specialty HVAC services across Austin and Williamson County. The firm provides 24/7 emergency support, manufacturer and labor warranties, and EPA‑certified technicians with over a decade of experience. Blog posts cover cooling efficiency, repair timelines, and tips.

Round Rock Air Conditioning Repair provides round‑the‑clock AC service and a suite of HVAC solutions, including repairs, maintenance, and system installations. Their certified technicians use current industry practices, offering transparent pricing and responsive emergency support. The company emphasizes local community service and tailored heating‑cooling solutions for residential and commercial clients.

CenTex Air provides commercial HVAC testing, adjustment, and balancing services across the Austin and San Antonio regions. NBC certification ensures compliance for projects in hospitals, schools, hotels, medical offices, restaurants, and residential complexes. Offerings include stairwell, pressurization, smoke‑control, and sound‑vibration testing, plus certified TAB career openings for qualified technicians.

Andrew & Sons offers family‑run air‑duct cleaning in Austin, boasting 20+ years of experience and a 5‑star, 400‑review reputation. Services include duct, dryer‑vent, HVAC, chimney, UV‑light, carpet, and insulation work, with free estimates, licensed/insured status and 24‑hour emergency support for residential and commercial clients throughout the central Texas region today.

AiRCO offers residential plumbing, HVAC, and electrical services with a complimentary on‑site assessment to provide precise estimates. Customers choose a morning or afternoon arrival window, and technicians confirm arrival an hour ahead. Online scheduling is limited to homeowners, while commercial requests require a phone call. Emergency text support is available.

KBT AC & Heat offers licensed, insured HVAC services across Central Texas, featuring 20+ years of family‑run expertise. Their technicians handle AC repair, installation, heating maintenance, and indoor‑air‑quality solutions with transparent pricing and flexible financing. Emergency support is available 24/7, serving residential and small‑business clients throughout the region and beyond.

Repair Garage Door Round Rock offers garage door repairs, part replacements, and opener fixes for residential customers. Their technicians handle broken panels, stuck doors, and spring issues across multiple Round Rock zip codes. Online chat support and a scheduling system simplify service requests, making local door maintenance straightforward and reliably.

ProHVAC offers round‑the‑clock emergency HVAC support, with licensed technicians handling AC repair, heating installation, maintenance plans, commercial systems, ductless mini‑splits, air‑quality testing, system replacements, thermostat installs, and inspections. Over ten years in business, they serve 500+ customers, hold a 5‑star Google rating, and provide free estimates for homeowners and businesses.

D3 Mechanical positions itself as a relationship‑focused mechanical contractor, emphasizing integrity and long‑term partnerships across Central Texas. With over 50 years in HVAC, plumbing, and general contracting, the firm serves commercial, healthcare, education, and office markets. Leadership includes a president, CFO, and VPs, and client testimonials highlight reliable service quality.

1431‑183 A/C & Heating offers 20+ years of residential HVAC expertise, free equipment estimates, and 24/7 emergency service. They install Goodman systems, provide detailed blog guides on heat pumps, SEER ratings, and maintenance, and answer common FAQs. Licensed (TACLB26619E) and active on social media, serving Round Rock and surrounding areas.

Jolly Brothers Services provides HVAC installation, repair, and maintenance for heat pumps, gas furnaces, and air‑conditioning units. The site details financing options, a maintenance plan, and current specials. It lists a broad range of supported brands, including York, Carrier, and Lennox, and offers online service requests for residential customers today.