❄️ Official Rankings
10 Best HVAC in Round Rock, TX (August 2026)
We compared 10 hvac serving Round Rock and Williamson County, Texas, and ranked the top providers by verified reviews, ratings, and local reputation — 5,621 customer reviews in all.
The 10 listed below hold an average rating of 4.9 out of 5, led by Cool Kids AC, Heat & Plumbing. Updated for August 2026.
- HVAC ranked
- 10
- Average rating
- 4.9★
- Reviews analyzed
- 5,621
- Area codes
- 512, 737
Cool Kids AC, Heat & Plumbing
⭐ 5.0 · 460 reviews
907 Fieldstone Pl, Round Rock, TX 78664
Chilly Air Services
⭐ 5.0 · 377 reviews
1502 Chisholm Trail Rd A, Round Rock, TX 78681
Jolly Brothers Services
⭐ 5.0 · 133 reviews
551 S I-35 Frontage Rd Ste 373, Round Rock, TX 78664
Cool Arrow Heat and Air
⭐ 5.0 · 125 reviews
1310 Chisholm Valley Dr Suite 410, Round Rock, TX 78681
TemperaturePro
⭐ 5.0 · 116 reviews
1311 Chisholm Trail Rd Ste 404a, Round Rock, TX 78681
Blue Ribbon Cooling, Heating, Plumbing, & Electrical
⭐ 4.9 · 2831 reviews
3121 Eagles Nest St #150, Round Rock, TX 78665
Koala Cooling & Plumbing: HVAC Department
⭐ 4.9 · 973 reviews
1102 S Industrial Blvd Ste C, Round Rock, TX 78681
Aire Serv of Round Rock
⭐ 4.9 · 271 reviews
600 S I-35 Frontage Rd, Round Rock, TX 78681
AirFix Mechanical
⭐ 4.9 · 118 reviews
551 S I-35 Frontage Rd #300, Round Rock, TX 78664
HVAC listed here serve Round Rock, Williamson County, and nearby ZIP codes including 78664, 78680, 78681, 78682, 78683.