HVAC Installation in Greater Austin
Get expert HVAC installation done right for your home today. Since 1977, McCullough Heating & Air Conditioning has helped Greater Austin homeowners choose efficient systems with honest, transparent pricing. Serving the Greater Austin area, including Austin, Round Rock, and Cedar Park. Backed by a 4.8 rating from 3,091 reviews, we focus on comfort, efficiency, and clean installations. Before summer heat sets in, ask about available tax credits and financing. Call to schedule your free estimate.
Each image is a real worksite photo, reflecting the quality and dedication in every project.
Why Choose Us
Why Homeowners Recommend Us
"Then they proceeded to deliver a quality installation of an energy efficient, top of the line Carrier HVAC system followed up by a superior quality control inspection."
"From the initial visit to the house by Troy, we knew McCullough would do a superb job installing our new HVAC system."
"They found small issues with the installation of our new HVAC unit through their own follow-up quality check and promptly fixed them."
Answers to Common Questions
View All FAQsHow much does it cost to replace a HVAC system in a typical home?
The cost to replace an HVAC system in a typical home varies widely and is finalized only after an on-site assessment of your home’s size, efficiency goals, and project scope. The biggest price driver is system sizing and efficiency (standard vs. high-efficiency or variable-speed), followed by whether any duct or control upgrades are needed.
Our Austin-area crews often find that attic-mounted systems and zoning goals influence installation time and materials more than homeowners expect. Financing and rebates may be available through current offers to help manage upfront cost.
Key factors that drive price:
- System type and capacity (heat pump, furnace/AC pair, or ductless mini-split)
- Efficiency level and technology (two-stage or variable-speed)
- Ductwork condition, sealing, or layout changes
- Thermostat, filtration, UV, humidity control, or air quality add-ons
Schedule an in-home evaluation to receive a firm, itemized quote before you decide. <br/> Updated: 2026-05-03 <br/> Need help in Barton Creek, TX? Call (512) 588-5937 or book online.
[0] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSURiN2NlOHhRRRAB!2m1!1s0x0:0x66ea2973ab642106!3m1!1s2@1:CIHM0ogKEICAgIDb7ce8xQE%7CCgwInMXStQYQqPPDrwM%7C?hl=en-US[1] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNaMnJ6Sm5nRRAB!2m1!1s0x0:0x66ea2973ab642106!3m1!1s2@1:CIHM0ogKEICAgICZ2rzJngE%7CCgwI5eXtpwYQwNuY0AI%7C?hl=en-US[2] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSURCNktlSnhnRRAB!2m1!1s0x0:0x66ea2973ab642106!3m1!1s2@1:CIHM0ogKEICAgIDB6KeJxgE%7CCgwIw_f2nQYQqJS_rQM%7C?hl=en-US[3] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSUNwMWUtR1R3EAE!2m1!1s0x0:0x66ea2973ab642106!3m1!1s2@1:CIHM0ogKEICAgICp1e-GTw%7CCgwI0pnFpgYQgJ-a3QI%7C?hl=en-US[4] https://coolmenow.com/home-energy/[5] https://coolmenow.com/about-us/federal-hvac-system-tax-credit-2024/[6] https://coolmenow.com/hvac-services-river-place-tx/[7] https://coolmenow.com/home-energy/energy-audit/[8] https://coolmenow.com/ac-installation-cedar-park-tx/[9] https://coolmenow.com/hvac-services-westlake/[10] https://coolmenow.com/sun-city-tx/[11] https://coolmenow.com/georgetown/How Much Does HVAC Installation Cost With Ductwork Included?
HVAC installation with ductwork included is priced after an in‑home evaluation because total cost depends on system size, duct scope, and how your home is built. The biggest drivers are matching equipment capacity to your home’s load and what it takes to design, seal, or replace ducts for proper airflow. Our team works across the Austin–Round Rock area, so we account for local attic heat and building practices when planning your system. A common field find: fixing one undersized return or a crushed run can change both price and comfort more than swapping equipment tiers.
Key factors we check to set your price:
- Tonnage and efficiency level of the new system
- Linear feet of new duct, number of supplies/returns, and register upgrades
- Attic/crawlspace access and code or insulation requirements
- Zoning, smart thermostat, and indoor air quality add‑ons
- Reuse, seal, or full replacement of existing ducts after pressure testing
If ducts test sound, reusing and sealing often saves money; if they’re leaky, contaminated, or undersized, full replacement is the right call. 0% financing for up to 72 months is available on qualifying systems. Final pricing is confirmed after an on‑site inspection and load calculation, so book a visit to get a firm, line‑item quote. <br/> Updated: 2026-05-08 <br/> Need help in Round Rock, TX? Call (512) 588-5937 or book online.
[0] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSURiN2NlOHhRRRAB!2m1!1s0x0:0x66ea2973ab642106!3m1!1s2@1:CIHM0ogKEICAgIDb7ce8xQE%7CCgwInMXStQYQqPPDrwM%7C?hl=en-US[1] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNaMnJ6Sm5nRRAB!2m1!1s0x0:0x66ea2973ab642106!3m1!1s2@1:CIHM0ogKEICAgICZ2rzJngE%7CCgwI5eXtpwYQwNuY0AI%7C?hl=en-US[2] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSURCNktlSnhnRRAB!2m1!1s0x0:0x66ea2973ab642106!3m1!1s2@1:CIHM0ogKEICAgIDB6KeJxgE%7CCgwIw_f2nQYQqJS_rQM%7C?hl=en-US[3] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSUNwMWUtR1R3EAE!2m1!1s0x0:0x66ea2973ab642106!3m1!1s2@1:CIHM0ogKEICAgICp1e-GTw%7CCgwI0pnFpgYQgJ-a3QI%7C?hl=en-US[4] https://coolmenow.com/home-energy/[5] https://coolmenow.com/about-us/federal-hvac-system-tax-credit-2024/[6] https://coolmenow.com/hvac-services-river-place-tx/[7] https://coolmenow.com/home-energy/energy-audit/[8] https://coolmenow.com/ac-installation-cedar-park-tx/[9] https://coolmenow.com/hvac-services-westlake/[10] https://coolmenow.com/sun-city-tx/[11] https://coolmenow.com/georgetown/
Helpful Tips & Maintenance Advice
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Where We Work
What areas do you serve for hvac installation?
We serve the Greater Austin area, including Austin, Round Rock, and Cedar Park. See the full list of communities we visit below.







