44 AC Replacement Contractors in Round Rock, TX

4.8 avg rating
5,194 total reviews9 offer 24/7 service
Need emergency service? 32 HVAC providers in Round Rock offer 24/7 availability

Top-Rated AC Replacement Contractors in Round Rock

#1

Cool Kids AC, Heat & Plumbing

5.0(460 reviews)
Highly Rated

All 459 review ratings are 5 stars, with 6 of 8 sampled reviewers specifically praising same day or next day arrival times. Technicians Chris, JJ, and Lance…

907 Fieldstone Pl, Round Rock, TX 78664
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#2

Casa Mechanical Services

4.4(1,061 reviews)

928 reviews yield a 4.4-star average rating, with every five-star review mentioning either the competitive pricing, the no-upselling approach, or Dennis as the…

2401 E Old Settlers Blvd, Round Rock, TX 78665
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#3

Andrew and Sons Air Duct Cleaning, LLC

5.0(409 reviews)
24/7 Highly Rated

All 353 reviewers awarded 5 stars, with every customer mentioning Andrew by name and praising his responsiveness, clear communication, and willingness to…

7900 Mozart St, Round Rock, TX 78665
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All AC Replacement Contractors (44 total)

Koala Cooling & Plumbing: Plumbing Department

5.0(322)
24/7 Highly Rated

305 reviews yield a perfect 5.0-star average, with Joe appearing in multiple positive accounts for emergency…

1102 S Industrial Blvd STE D, Round Rock, TX 78681
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Fresco Heating and Air Conditioning

5.0(232)
Highly Rated

All 8 reviewers award 5 stars, citing specific technicians and named services rather than generic praise.…

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The AC Guy of ATX

5.0(227)
Highly Rated

Across 207 five-star reviews, customers repeatedly emphasize transparency in pricing, thorough explanations…

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All Pro Services

4.5(377)

Of seven named reviews, six award five stars citing quick diagnostics, same-day response, and honest pricing.…

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Duct Cleaning Squads - Air Duct Cleaning Austin

5.0(146)
24/7 Highly Rated

Eight recent reviewers consistently mention thoroughness as a distinguishing trait, with multiple clients…

670 Louis Henna Blvd, Round Rock, TX 78664
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Silver Spur Air, Heating, & Plumbing of Austin

4.9(160)
Highly Rated

160 reviewers collectively award a 4.9-star average, with 3 customers specifically citing same-day emergency…

3912 Gattis School Rd #103, Round Rock, TX 78664
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Christianson Air Conditioning and Plumbing

4.0(494)
24/7

All three visible reviews award 5 stars, with each reviewer naming specific technicians who exceeded…

1950 Louis Henna Blvd, Round Rock, TX 78664
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TemperaturePro

5.0(122)
Highly Rated

All five detailed reviews award 5 stars, with three specifically naming technician Jason for educational…

1311 Chisholm Trail Rd suite 404a, Round Rock, TX 78681
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Cool Time HVAC, LLC

5.0(111)
Highly Rated

All 101 reviews award 5 stars, with reviewers frequently naming Alex as the owner-technician who answers…

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Brian's Heating and Cooling

4.8(128)
Highly Rated

All six sampled reviewers award 5-star ratings, with each testimonial naming a specific technician. Three…

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1-800-Plumber +Air

4.9(99)
24/7

Four reviewers specifically mention same-day or immediate response during emergencies. Technicians Robert…

1400 Chisholm Trail Rd suite e, Round Rock, TX 78681
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Climate Masters Heating & Air Conditioning

4.8(91)
24/7

All five reviewers awarded 5 stars, with three mentioning specific technicians by name. Four reviewers…

2200 E Palm Valley Blvd, Round Rock, TX 78665
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Unified Heating & Air Conditioning

4.8(80)
24/7

Eighty reviewers award Unified Heating & Air Conditioning a 4.8-star average, with Brayden and Tracy named…

399 S H 45, Round Rock, TX 78664
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Pure Aire HVAC

4.8(75)

72 reviews yield a 4.8-star average, with all positive reviews citing fast response times and professional…

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1431 A/C & Heating

4.9(57)

All 56 reviewers awarded 5 stars, with 6 of 8 sampled reviews explicitly mentioning Mike by name. Four…

3406 Nocona Cove, Round Rock, TX 78665
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RR HVAC Solutions - Air Conditioning & Heat

4.8(59)
24/7

All three featured reviewers gave 5-star ratings, with the company's 4.8 rating supported by 56 total…

1310 Chisholm Valley Dr Suite 403, Round Rock, TX 78681
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Chisholm Air Conditioning

5.0(48)

All 48 reviews award 5 stars, with Kyle appearing by name in every reviewer account. Customers consistently…

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All Terrain Heating & Cooling

4.9(52)

All 44 reviews carry 5-star ratings, with customers consistently praising Emily's scheduling responsiveness…

110 N Interstate Hwy 35 #163, Round Rock, TX 78681
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D A WARDEN COMPANY

4.9(52)

All 8 sampled reviews carry 5-star ratings, with customers specifically naming staff members Danny and the…

271 Texas Ave, Round Rock, TX 78664
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To the T Plumbing Heating and Air

5.0(47)

All 47 reviews award 5 stars, with customers particularly valuing the honest diagnostic approach and refusal…

551 S I-35 Frontage Rd Suite 324, Round Rock, TX 78664
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Beyond Air Services, LLC

5.0(44)

All 34 reviews award 5 stars, with technicians named in every testimonial, Tevin appears in the majority.…

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Appliance HVAC Care Systems

5.0(44)

Eight reviewers specifically mention same-day or same-hour emergency response, with 100% awarding 5 stars.…

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KBT A/C & HEAT

5.0(43)

All forty reviewed customers awarded 5 stars, with multiple reviewers specifically calling out technicians…

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Cavalier Cooling and Heating

4.9(38)

Thirty-eight reviewers award Cavalier Cooling and Heating an exceptional 4.9 average rating, with every…

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RR HVAC Solutions - Air Conditioning & Heat

4.6(47)
24/7

All three sampled reviewers awarded 5-star ratings, with each naming a specific technician (Jack, Kingston,…

1850 A W Grimes Blvd, Round Rock, TX 78664
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Cook Heating and Air

5.0(34)

All eight sampled reviews award 5 stars, with customers repeatedly praising Michael Cook and his son by name.…

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Air Velocity Services

4.6(35)

35 reviews on the directory yield a 4.6-star average, with every sampled reviewer awarding 5 stars. Multiple…

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AC Replacement Costs in Round Rock

Replacement costs for aging systems in Round Rock. If repair cost exceeds 50% of replacement, replacement is usually more economical.

ServiceLowAverageHigh
Central AC (3-ton, basic)
$5,500$8,000$11,000
Central AC (4-ton, mid-efficiency)
$7,500$10,500$14,000
Central AC (5-ton, high-efficiency)
$9,500$12,500$16,000
Full HVAC system (AC + furnace)
$11,590$13,430$14,100
Plus ductwork replacement
If existing ducts are aged/leaking
$2,100$3,000$4,000
Repair cost threshold50% rule: if repair > 50% of replacement, replace

Prices reflect humid subtropical metro averages compiled from published industry cost guides, contractor surveys, and regional labor data. Last updated: April 2026.

AC Replacement in Round Rock, TX: What to Expect

Round Rock residents face relentless summer heat with 25-plus days reaching 100 F and the urban heat island effect from the Austin metro pushing cooling needs from May well into September. This demands reliable AC Replacement in Round Rock, where 31 licensed contractors maintain an average rating of 4.7 across nearly four thousand customer reviews. Keeping systems running through these brutal months isn't optional, it's essential for indoor comfort.

Cost depends heavily on system size and efficiency. A basic 3-ton central AC runs $5500 to $11000, while mid-efficiency 4-ton units span $7500 to $14000, and high-efficiency 5-ton systems reach $9500 to $16000. In Texas, HVAC contractors must hold either a Class A unlimited license or a Class B license from the Texas Department of Licensing and Regulation to work on cooling systems, ensuring qualified technicians handle your installation.

Customer feedback reveals what matters most to Round Rock homeowners. Several five-star reviewers specifically praise same day and next day arrival times, with technicians like Chris, JJ, and Lance earning repeat mentions for responsiveness. Other customers highlight transparent pricing and thorough explanations of recommended repairs, noting that arrival times matched scheduled appointments and no unnecessary upselling occurred. Patterns across reviews point to speed, honesty, and clear communication as the distinguishing qualities that set top contractors apart.

Frequently Asked Questions

AC replacement in Round Rock runs $2,100-$16,000 depending on system size and efficiency. A 3-ton basic central AC costs $5,500-$11,000 installed, a 4-ton mid-efficiency system $7,500-$14,000, and a 5-ton high-efficiency unit $9,500-$16,000. Full HVAC replacement (AC + furnace combined) averages $11,590-$14,100.

All HVAC Contractors in Round Rock, TX

Complete directory of 126 contractors — browse alphabetically

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