Size the air. Price the job. Before you leave the truck.

Airlock calculates negative air machine counts and builds itemized abatement quotes — one tool, built for asbestos and mold crews working the containment, not a desk.

One-time purchase. Runs in your phone's browser — nothing to install, no subscription.

SIZING READOUT
Containment volume
960ft³
Required airflow
1,477CFM
Machines needed
2
Actual ACH achieved
7.5ACH
MEETS TARGET ACH

Two calculators, one job walk

Everything you'd otherwise work out on a notepad or a spreadsheet back at the office.

01

Negative air sizing

Enter containment dimensions and a target ACH. Airlock returns volume, required airflow, and exact machine count — derated for HEPA filter loading and duct loss, so the number in the field matches the number on paper.

02

Job cost estimator

Labor, disposal, containment materials, air monitoring, and your markup — combined into an itemized quote you can print or screenshot before you're back in the truck.

03

Job-site ready

No login, no account, no signal required once it's loaded. Add it to your home screen and it opens like any other app.

Built for the truck, not the office

Without AirlockWith Airlock
Machine count guessed from memory or a rule of thumbCalculated from actual volume, target ACH, and rated CFM
Quote built later at a desk, job walk half-rememberedItemized quote built on-site, while the numbers are fresh
Spreadsheet that needs signal or a laptopRuns offline in any phone browser
Filter loading and duct loss estimated by eyeBuilt-in derate factor, adjustable per job

One price. No subscription.

Airlock — Full Access
$49 one-time
  • Negative air sizing calculator
  • Abatement & mold cost estimator
  • Unlimited quotes, no per-job fee
  • Print-ready quote output
  • Works offline once loaded
  • Free updates
Get Airlock

FAQ

What devices does it run on?

Any phone, tablet, or computer with a modern browser — iPhone, Android, doesn't matter. Nothing to install from an app store.

Does it work without signal?

Yes, once the page has loaded once, it keeps working without a connection.

Does it replace a project-specific engineering design?

No. Airlock gives planning-level numbers for sizing and pricing. Always confirm ACH and pressure requirements against your project spec and local regulations before finalizing a bid.

Is there a subscription?

No. It's a one-time purchase with free updates going forward.