Can you handle the permits?

Yes. We pull and manage the commercial mechanical permits for our scope as part of the job. Permit costs are itemized in your proposal, not buried.

Do you work directly with general contractors?

Yes — that's our core business. We work as a mechanical subcontractor for GCs on commercial projects, handling HVAC scope from bid through closeout. We provide itemized, firm lump-sum proposals so there are no surprises.

What kind of HVAC work do you do?

Commercial HVAC and refrigeration — rooftop units (RTUs), split systems, VRF, and refrigeration. We handle new installation, replacement, service, and maintenance. As an authorized LG dealer, we also design, install, and service LG Multi V VRF systems.

How do I get a quote?

Send us your plans or scope and we'll put together a detailed, itemized proposal. Every line is visible — equipment, labor, permits, and any required crane or electrical work. Reach out through our contact page or give us a call.

Do you install A2L (R-454B) equipment?

Yes. We're current on the refrigerant transition and install A2L-compliant commercial equipment with proper certified handling. If you're replacing older R-410A or R-22 units, we'll walk you through your options.

How fast can you respond?

For active GC projects, we work to your schedule. For service issues on commercial equipment, reach out and we'll get you a response — and in an Austin summer, we know a down unit can't wait.

Are you licensed and insured?

Yes. We hold Texas HVAC license TACLA #159287C and Arizona ROC #366528, and carry full general liability, auto, umbrella, and workers' comp coverage. We're also an approved Austin Energy participating contractor. Documentation is available for prequalification.

What areas do you serve?

We're a commercial HVAC and refrigeration mechanical subcontractor based in Austin, serving the greater Austin and San Antonio markets, plus Phoenix, Arizona. If your project is in or around those metros, we can help.

Understanding Airflow Models for HVAC Systems

Name: Austral HVAC
Address: Bastrop, TX
Telephone: (512) 275-6702

Winder Moll
Jun 14
2 min read

Updated: Jul 9

Austral HVAC builds to-scale airflow models so building owners can see exactly how conditioned air will move through a space before a single unit is installed.

Project Overview: 435 × 186 ft Production Warehouse in Bastrop, TX

For a high-bay warehouse measuring approximately 80,900 sq ft (50 ft eave / 55 ft ridge) with three existing HVLS fans, we compared three cooling strategies. Each strategy was modeled to the building’s real dimensions.

Recommended Strategy: Option C - Floor-Level, 4-Way Distribution

We recommend using three 25-ton Trane Odyssey™ split systems (R-454B, Symbio™ controls) with Advantage SF4W-6 four-way drop-box diffusers. These will be installed at floor level, 60 ft off the left wall.

Benefits of Option C

Efficient Cooling: Cool air is maintained in the occupied zone (≤7 ft) where people work. This prevents warm air from mixing with the conditioned air, saving energy costs by not cooling the entire 50 ft height.
Overlapping Coverage: The four-way diffusers create overlapping coverage circles. This results in continuous cooling along the full 435 ft length of the warehouse.
Reduced Air Volume: This system conditions roughly one-quarter of the air volume compared to a ceiling-distributed system.
Independent Office Area: The office area along the right wall is served by its own independent HVAC system, ensuring comfort for all employees.

Visualizing Airflow

Want a to-scale airflow model for your facility? Contact Austral HVAC at services@australhvac.com or call (512) 275-6702. You can also visit our website at australhvac.com for more information.

https://video.wixstatic.com/video/934eb2_d95d359e217b40fda337966682bcc888/480p/mp4/file.mp4

Importance of Airflow Modeling

Airflow modeling is crucial for optimizing HVAC systems. It allows for precise planning and execution of air distribution strategies. By understanding how air moves within a space, we can ensure that every corner of a building receives adequate cooling or heating.

Cost-Effectiveness

Implementing the right airflow model can lead to significant cost savings. By ensuring that cool air is directed to the occupied zones, we reduce energy waste. This means lower utility bills and a more sustainable operation.

Enhanced Comfort

Comfort is key in any workspace. Proper airflow ensures that employees are not subjected to hot or cold spots. This can lead to increased productivity and satisfaction among staff.

Conclusion

In conclusion, understanding airflow models is essential for effective HVAC system design. By choosing the right strategy, such as our recommended floor-level, 4-way distribution, you can achieve optimal comfort and efficiency in your building.

For a tailored solution that meets your specific needs, reach out to us today. We are here to help you create a comfortable and energy-efficient environment.