Commercial HVAC Repair
Rooftop units, split systems, air handlers and VAV boxes diagnosed properly and repaired, with readings documented and pricing itemized.
Our Services
Commercial HVAC & Mechanical Services in Austin
From a single rooftop unit that quit on a 105° afternoon to a full central plant replacement, 512 Mechanical covers the whole building. One number, one crew, one company accountable for the outcome.
Service & Repair
Keeping existing equipment running
Diagnostics, repair and scheduled maintenance on the systems your building already has.
Chiller Repair & Replacement
Air-cooled and water-cooled machines — scroll, screw and centrifugal — serviced in house rather than subcontracted out.
Rooftop Unit (RTU) Service
Repair, maintenance and full change-outs including curb adapters, crane coordination and startup.
Boiler Repair & Service
Hot water and steam, condensing and non-condensing, plus the pumps and hydronic loop around them.
Cooling Tower Service
Cleaning, fill and gearbox work, basin repair and full replacement, plus condenser water system service.
Preventive Maintenance
Scheduled programs with documented equipment inventories, written condition reports and priority dispatch.
Projects & Emergencies
Installing, replacing and responding
24/7 Emergency HVAC
Nights, weekends and holidays. A live person answers and a technician gets dispatched, with temporary cooling coordinated where the fix will take time.
New Construction Mechanical
Ground-up mechanical for general contractors and developers — design-build or plan-and-spec, through startup and commissioning.
Tenant Finish-Out HVAC
Build-out mechanical for office, retail, medical and restaurant spaces, built to the delivery date.
Not Sure What You Need?
Describe the symptom and we will tell you what is likely going on before anyone gets dispatched. We would rather talk you through something on the phone at no charge than sell you a service call you did not need.
Where We Work
Serving the Austin metro and Central Texas
Every service above is available across the Austin metro and Central Texas.
Questions
Frequently asked questions
Do you work on residential HVAC?
No. 512 Mechanical is commercial and industrial only. That focus is deliberate — commercial equipment, controls and code requirements are different enough that splitting attention between the two makes a company worse at both. If you need residential work we are happy to point you somewhere good.
What areas do you serve?
The greater Austin metro and Central Texas, including Round Rock, Cedar Park, Georgetown, Pflugerville, Leander, Hutto, Taylor, Lakeway, Kyle, Buda, San Marcos, New Braunfels and Bastrop — across Travis, Williamson, Hays, Bastrop and Caldwell counties. See our full service area.
Are you licensed and insured?
Yes. 512 Mechanical operates under Texas license TACLA00109814C and carries general liability and workers’ compensation coverage. Certificates of insurance are available same day for any facility or general contractor that requires one.
Request Service or a Quote
Let's get your building running right
Tell us what is going on and we will get a technician or an estimator on it. For anything urgent, call — that is always the fastest path.
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24/7 Dispatch(512) 316-9646
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Office12108 Roxie Dr Suite D
Austin, TX 78729 -
HoursMon–Fri 8:00a–5:00p
Emergency service 24/7/365
Request service or a quote
Equipment down right now?
Emergency commercial HVAC and chiller response across Austin and Central Texas — nights, weekends and holidays.