Chiller Service & Replacement
Air-cooled and water-cooled chillers — scroll, screw and centrifugal. Serviced in house.
Learn More24/7 Emergency Response
Commercial HVAC, Chillers, and Heavy Mechanical Services Austin & Central Texas
512 Mechanical keeps Central Texas buildings running. We service, repair and replace commercial HVAC and chiller systems, run documented preventive maintenance programs, and install new mechanical systems for ground-up construction and tenant finish-outs across the Austin metro.
- 24/7Emergency dispatch, nights and weekends
- 80 miService radius around the Austin metro
- In houseChillers, towers and heavy mechanical
- LicensedTACLA00109814C · COI same day
Commercial HVAC Repair
Rooftop units, split systems, air handlers and VAV boxes — diagnosed and fixed right.
Learn MoreHeavy Mechanical
Cooling towers, boilers, pumps, hydronic piping and full central plant overhauls.
Learn MorePlanned Maintenance
Scheduled PM programs with documented condition reports and priority dispatch.
Learn MoreEquipment We Service
- Chillers
- Rooftop Units
- Boilers
- Cooling Towers
- Air Handlers
- VAV Boxes
- VRF Systems
- Pumps & VFDs
- Ductwork
Chillers & Central Plants
Most Austin HVAC companies sub out chiller work. We do it in house.
A chiller down in July is not a service call, it is a business interruption. Central plant work needs technicians who understand the whole system — the machine, the loop, the towers, the pumps and the controls that tie them together — not just the piece that threw a fault code.
512 Mechanical is built around heavy mechanical capability. We troubleshoot at the plant level, carry the tooling for real repairs instead of parts-swapping, and take a project from failure diagnosis through equipment selection, rigging, set and startup without handing you off to three different vendors.
- Air-cooled and water-cooled — scroll, screw and centrifugal machines
- Full-loop diagnostics — chiller, towers, pumps, piping and controls together
- Rigging and replacement — crane coordination, set, pipe, wire and startup
- Refrigerant compliance — EPA recovery, leak rate tracking and documentation
Service & Planned Maintenance
Commercial HVAC service that gets documented
Facility managers do not just need the unit fixed. They need a record they can hand to ownership. Every 512 Mechanical visit ends with photos, readings and a written condition report — not a scribbled work order and a vague invoice.
Our preventive maintenance agreements start with a full equipment inventory of your building, then run on a quarterly or semi-annual cadence: filters, belts, coil cleaning, refrigerant and amp draw readings, and a prioritized list of what needs attention and when. Agreement customers get priority dispatch ahead of non-contract calls and discounted labor on repairs.
- Rooftop units, split systems, VRF and computer-room units
- Air handlers, VAV boxes and reheat coils
- Written condition report with photos after every visit
- Capital planning support for budgeting replacements
New Construction & Retrofits
Mechanical installs for Central Texas contractors
We bid ground-up mechanical, tenant finish-outs and equipment retrofits for general contractors and developers across the Austin metro. We bid it straight, we hold the schedule, and we hand off a system that commissions clean.
From equipment selection and crane coordination through sheet metal, piping, startup and test-and-balance coordination, you are dealing with one mechanical contractor who owns the whole scope instead of a stack of subs pointing at each other.
- Design-build and plan-and-spec mechanical
- Tenant finish-out and build-out HVAC
- Sheet metal, ductwork and equipment set
- Startup, commissioning and TAB coordination
Why Central Texas Facilities Call 512
Built For Buildings That Cannot Go Down
When you need professionals to service equipment as expensive and as critical as a chiller or a central plant, you need to know you are getting the right technician — not whoever was available. Every 512 Mechanical tech works commercial and industrial equipment. That is all we do.
There is no problem too big or too small, and no problem that should have to wait, which is why we answer the phone around the clock. Texas heat does not keep business hours and neither do we.
Licensed · Insured · Stocked
What We Do
Commercial HVAC & Mechanical Services
Expert service around the clock for commercial mechanical systems — from a single rooftop unit to a full central plant replacement.
Repair
Emergency and scheduled repair for nearly every brand and style of commercial HVAC and mechanical equipment.
- Rooftop units & packaged systems
- Chillers & central plants
- Boilers & cooling towers
- Air handlers & VAV boxes
Install
Professional installation for commercial mechanical systems, paired with the field knowledge to make them run right on day one.
- Ground-up new construction
- Equipment change-outs
- Tenant finish-out HVAC
- Rigging & crane coordination
Maintenance
Regular or on-demand maintenance that keeps your equipment running and your capital plan honest.
- Quarterly & semi-annual PM
- Full equipment inventories
- Written condition reports
- Priority dispatch for members
Emergency
24/7/365 response across the Austin metro. Nights, weekends and holidays — a live person, every time.
- After-hours dispatch
- Temporary cooling coordination
- Refrigerant leak response
- Same-day metro response
Explore Our Services
Commercial HVAC & mechanical services
Detail on every service line, and what each one covers across the Austin metro.
Facilities We Serve
Industries across Austin & Central Texas
We work with property managers, facility directors, plant engineers and general contractors on buildings where a mechanical failure costs real money every hour it lasts.
- Commercial Real Estate & Office
- Data Centers & Critical Cooling
- K–12 Schools & Higher Ed
- Healthcare & Medical Office
- Industrial & Manufacturing
- Warehouse & Distribution
- Multifamily & Property Management
- Government & Municipal
- Retail, Restaurant & Hospitality
- Faith-Based & Nonprofit
- Financial & Professional Services
- General Contractors & Developers
The 512 Difference
The contractor you wish you had called first
Most buildings do not have an HVAC problem. They have a contractor problem — missed appointments, vague invoices, repairs that do not hold. We built 512 Mechanical to be the opposite of that.
We answer the phone
A real person, every time, including nights and weekends. No answering service taking a message for a callback that never comes.
Documented every visit
Photos, readings and a written condition report on every call — a record you can hand to ownership.
Repair-first, honestly
We tell you when to fix it and when to replace it, with the numbers behind the recommendation instead of a sales pitch.
Heavy mechanical in house
Chillers, towers, boilers and rigging handled by our own crews. Fewer vendors, fewer handoffs, one company accountable.
Licensed & insured
Texas TACL license, general liability and workers' comp. Certificates of insurance available same day.
Central Texas only
Not a national chain routing you through a call center in another state. We live here and our response times show it.
Straight pricing
Quoted work is quoted work. Time and material is itemized. You will never wonder what you paid for.
Built for uptime
Preventive maintenance that finds the failure before your tenants do — emergency calls are the most expensive way to run a building.
The 512 Family of Companies
Three companies, one standard
512 Mechanical is the commercial HVAC and heavy mechanical arm of a group that has been keeping Central Texas businesses running for years. When a job needs more than one of us, we coordinate it between ourselves instead of leaving you to manage three vendors on a bad afternoon.
512 Mechanical
Commercial HVAC & heavy mechanical. Chillers, rooftop units, boilers, cooling towers, central plants, preventive maintenance and new construction installs.
Our Services512 Refrigeration
Commercial refrigeration & hot-side. Walk-in coolers and freezers, reach-ins, ice machines, display cases and commercial kitchen equipment, serving Austin restaurants, grocers and hospitality groups.
Visit 512refrigeration.com512 Cold Trailers
Refrigerated trailer rental. Cold storage delivered, powered and placed — same day. For walk-in failures, events, renovations and seasonal overflow across Central Texas.
Visit 512coldtrailers.com
Not sure which one you need? Call any of the three and we will get you to the right team. Refrigeration failure with product at risk? A trailer can hold your inventory while the equipment gets fixed.
HVAC Service Area
Commercial HVAC service across the Austin metro
512 Mechanical dispatches from Austin and covers roughly an 80-mile radius. If your facility sits in Travis, Williamson, Hays, Bastrop or Caldwell county, we are close enough to get there fast.
Austin Metro Core
- Austin
- North Austin
- South Austin
- East Austin
- Downtown Austin
- The Domain
- Manor
- Del Valle
Northern Suburbs
- Round Rock
- Cedar Park
- Georgetown
- Pflugerville
- Leander
- Hutto
- Taylor
- Liberty Hill
Southern & Outlying
- Kyle
- Buda
- San Marcos
- New Braunfels
- Bastrop
- Lockhart
- Dripping Springs
- Lakeway & Bee Cave
Need commercial HVAC service somewhere not on this list? Call (512) 316-9646 — if we can get a truck there we will tell you straight, and if we cannot, we will point you to someone who can.
Frequently Asked Questions
Commercial HVAC in Austin, answered
What areas does 512 Mechanical serve?
We 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, Bastrop and the surrounding Travis, Williamson, Hays and Bastrop county areas.
Do you offer 24/7 emergency commercial HVAC service in Austin?
Yes. 512 Mechanical provides 24/7 emergency response for commercial and industrial facilities across Central Texas. Call (512) 316-9646 any hour and you will reach a person, not a call queue.
Do you service chillers?
Chillers are a core part of what we do. We service, repair, overhaul and replace air-cooled and water-cooled chillers — scroll, screw and centrifugal machines — along with the pumps, cooling towers and hydronic piping around them. Most Austin HVAC companies subcontract this work; we keep it in house.
Are you licensed and insured in Texas?
Yes. 512 Mechanical is a licensed Texas air conditioning and refrigeration contractor (TACLA00109814C) and carries full general liability and workers' compensation coverage. Certificates of insurance are available on request for any facility or general contractor that requires them.
Do you work with general contractors on new construction?
Yes. We handle ground-up mechanical installation, tenant finish-outs and mechanical retrofits — from equipment set and rigging through ductwork, piping and startup. We bid competitively, hold our schedule, and coordinate test and balance so the system commissions clean.
What does a preventive maintenance agreement include?
A documented equipment inventory for your building, a scheduled visit cadence (typically quarterly or semi-annual), filter and belt changes, coil cleaning, refrigerant and amp draw readings, and a written condition report after every visit with photos and prioritized repair recommendations.
Agreement customers also get priority dispatch ahead of non-contract calls and discounted labor rates on any repair work.
How fast can you get to my building?
True emergencies get immediate dispatch, same day. Routine service calls are scheduled into the queue rather than same-day, typically within a day or two depending on crew load and distance. Preventive maintenance agreement customers move ahead of non-contract calls.
Do you replace equipment, or only repair it?
Both. We handle everything from a single rooftop unit change-out to a full central plant replacement, including equipment selection, crane and rigging coordination, piping, electrical coordination, startup and commissioning. When a system is at the end of its life we will tell you and show you the math on repair versus replace.
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.