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🌋 Why Hawaiʻi first
High delivered-CO₂ cost and import exposure make Hawaiʻi the strongest first market for distributed, beverage-grade on-site capture.
Did you know Hawaiʻi’s buildings can produce their own clean CO₂— using the air they already circulate?
Hawaiʻi imports fossil CO₂ across oceans while its buildings already move the air needed to create a local supply. HVACapture™ converts that airflow into on-site, beverage-grade CO₂ for carbonation and inerting—reducing delivery miles, stabilizing cost, and enabling a premium “Made from Hawaiʻian Air” story.
Calling all carbonation-users
QSRs • Breweries • Bottling • Stadiums • Grocery • Campuses • Airports
University of Hawaiʻi — Mānoa • Affiliated Startup
Invented and founded in Hawaiʻi—built for Hawaiʻi.
A UH Mānoa–affiliated venture advancing on-island CO₂ circularity.
From fragile imports to circular, on-site carbonation
On islands like Hawaiʻi, carbonation is a supply-chain liability: most CO₂ is a fossil byproduct produced far away, shipped thousands of miles, exposed to price spikes and shortages, and invisible to the customer. HVACapture™ flips that model by capturing CO₂ from indoor air, polishing it to beverage-grade on-site, and measuring it end-to-end. The result is fewer diesel miles, a more resilient local supply, and a premium “Made from Hawaiʻian Air” story.
🏪 Better operator economics
Convert recurring CO₂ purchases and delivery costs into a local micro-utility with more predictable supply and margin recovery.
🍺 Carbonation today, options tomorrow
Start with fountains and draft. Extend into tank pressurization, inerting, SAF pathways, or grid-linked carbon products as partners mature.
📊 MRV-ready and brandable
Every kilogram is tracked from capture to use, enabling transparent ESG reporting and customer-facing provenance.
🧱 Small footprint, network scale
Modular skids fit back-of-house constraints and can roll out across franchises, airports, campuses, retail, and venues.
🔁 Closed-loop resilience
Reduce trucked deliveries, import dependencies, and supply volatility by generating clean CO₂ at the point of use.
Explained like an air filter
Your building already moves large volumes of air all day. HVACapture™ adds a CO₂-selective filter that grabs CO₂ molecules as air passes through. Once the media is full, the system releases that CO₂, dries and polishes it to beverage spec, and sends it to your fountains, kegs, or process lines. In simple terms, it is a soda-grade CO₂ maker built into your HVAC ecosystem.
Circular CO₂ for You
QSRs, breweries, bottlers, stadiums, airports, grocery, and multifamily: turn HVAC into an on-site CO₂ asset and deploy it where value is highest.
1
🍔 QSR / Foodservice
1.2–2.4 t/yrPer-site carbonation demand with strong replication across franchise networks.
2
🍺 Breweries
3–140+ t/yrCarbonation, tank pressurization, purging, and packaging support with higher site-specific volumes.
3
🧃 Bottling Plants
120–400 t/yrHigh-throughput carbonation and line operations make bottling one of the most attractive capture economics cases.
4
🏟 Stadiums & Arenas
8–25 t/yrConcessions, beer taps, and event-driven peak loads combine into a visible, sponsor-ready deployment category.
5
✈️ Airports
30–120 t/yrAggregate terminal concession demand plus future pathways into fuel or logistics-related CO₂ utilization.
6
🏫 Campuses & Retail
0–10+ t/yrFood courts, dining halls, taps, and selected packaging/inerting use cases create strong pilot and education environments.
Hawaiʻi Site Calculator
Edit the highlighted fields. Benchmarks update by segment and the model calculates capture, avoided CO₂ spend, credits, and simple payback.
Quick inputs
Advanced airflow
Benchmark notes
Imported CO₂: —
Credit: —
Payback target: 2–5 yrs
Results
Physics + economics. Updates in real time.
—CFM
—kg/day captured
—tons/year
$—Avoided CO₂ cost
$—Credits
$—HVAC savings
$—O&M
$—Net annual benefit
— yrsSimple payback
Segment insight
HVACapture™ — How It Works & Tech Stack
Modular, drop-in architecture that pairs with existing HVAC and beverage systems, while allowing swappable sorbent and purification components as science advances.
Capture
Return or supply air is routed across sorbent beds tuned for ambient CO₂. Fans already move the air—HVACapture™ adds the carbon-selective layer.
Release & polish
Thermal or pressure swing releases CO₂, then dryers and gas cleanup bring the stream to beverage-grade quality.
Buffer & deliver
On-site storage buffers flow into fountains, draft lines, tanks, packaging, or inerting systems through standard regulators and skids.
Verify
Quality sensors, flow telemetry, and site logs verify every kilogram for operational reporting, credits, and ESG narratives.
🎯 Sorbents
Humidity-tolerant amines, carbonate cycles, advanced carbons, and future media classes chosen per site.
♻️ Regeneration
TSA / TVSA / PSA variants with heat and mass balancing and optional low-grade heat recovery.
🧪 Polishing
Dryers, coalescers, molecular sieves, and catalytic steps to reach beverage spec.
🗜 Compression & Buffer
Right-sized compression and receiver sizing for peak event or process demand.
🧩 Interface Layer
Standard mechanical and controls architecture so new media can slot in without redesigning the system.
📊 Controls + MRV
Inline quality telemetry, uptime logs, flow records, and exportable audit trails.
Partnered science & advisory network
HVACapture™ is being framed through a cross-disciplinary bench that spans sorbent chemistry, HVAC systems engineering, MRV/LCA, and built-environment deployment in Hawaiʻi.
BA
Brandon Arns
Founder, CEO & Inventor — Arns Innovations
Systems-level IP architecture, on-site CO₂ utilization, commercialization strategy, and pilot design.
SM
Dr. Smaranda Marinescu
Scientific advisor — USC Loker Institute
Surface chemistry, sorbent behavior, catalytic interfaces, and release/polish pathway insight.
SX
DOE Lab Advisor Bench
Process & systems engineering perspective
Standards, process verification, safety framing, and scale-up logic for eventual larger deployments.
UH HITIDE & HNEI
- Campus pilots and food court / concession testbeds
- MRV and LCA support for Hawaiʻi-specific impact accounting
- Student talent and island deployment pathways
USC Loker Institute
- Advanced sorbent screening and release chemistry insight
- Food-grade polish pathway framing
- Modular cartridge design direction
DOE-adjacent engineering logic
- Process hazard analysis and standards orientation
- Performance verification and controls thinking
- Support for scale-up-ready architecture
Get a custom pilot deck
We’re building a Hawaiʻi-first pilot cluster. QSRs, breweries, bottlers, stadiums, campuses, airports, retail sites, operators, universities, and funders can all enter through a pilot conversation.