Privacy Policy

What we don’t collect

None of these apps require an account, email address, or sign-in. We do not collect your name, contact information, or project data on our own systems.

Specifically, we do not:

• Store your calculations, projects, or reports on Product Party servers
• Sell or rent your information to data brokers
• Run our own advertising or tracking networks in HVAC Load Calculator CSA F280 or HVAC Duct Tools

Where your data lives

Projects, inputs, results, and settings are stored locally on your device using on-device storage. Your data never leaves your device unless you explicitly choose to:

• Export or share a PDF report
• Email or message calculation results through the system share sheet

We do not receive copies of anything you share. Deleting the app removes locally stored data from your device. Standard device backups (for example iCloud or iTunes backups on iOS) may include app data as part of your device backup; that is governed by Apple or your backup provider, not by us.

Climate and reference data

HVAC Load Calculator and HVAC Load Calculator CSA F280 include bundled climate databases (US ZIP codes and Canadian postal areas). These databases ship inside the app and are read locally. Looking up a ZIP code or postal code does not transmit your location or project data to us.

App-specific notes

HVAC Load Calculator (US)

• Local storage: All project data stays on your device.
• Optional analytics: You may opt in to anonymized usage analytics via TelemetryDeck in Settings. Analytics are off by default and only run if you turn them on.
• Subscriptions: Optional Pro subscriptions are processed by RevenueCat and the App Store or Google Play. RevenueCat handles purchase receipts only; it does not receive your calculation data.
• iCloud sync (iOS): If enabled, projects may sync between your Apple devices through your iCloud account. That sync is between your devices via Apple; we do not host project data.

HVAC Load Calculator CSA F280 (Canada)

• Local storage: All project data stays on your device.
• No analytics: This app does not include analytics or advertising SDKs.
• Location (optional): With your permission, the app may use your location once to suggest a postal code for climate lookup. Location is not sent to Product Party servers.
• Photos (optional): You may add site photos or a company logo for PDF reports. Photos stay on your device unless you export a report.

HVAC Duct Tools

• Fully offline: Duct sizing, static pressure checks, and system designs run entirely on your device.
• No analytics or ads: No third-party analytics, advertising, or tracking SDKs.
• Exports: PDF and CSV exports are generated on your device. Data leaves your phone only when you share or export a file.

A2L Safe Charge

• Local storage: Calculation history, branding info, and preferences stay on your device.
• Ads (free version): The free version displays ads via Google AdMob. AdMob may collect information such as a device advertising identifier, IP address, and general region to deliver and measure ads. See Google’s advertising policies for details. On iOS, Apple’s App Tracking Transparency prompt controls whether personalized ads are allowed.
• Pro purchases: Optional in-app purchases may be processed by RevenueCat and the App Store. RevenueCat handles purchase receipts only.

Third-party services

Depending on which app you use and which features you enable, these third parties may be involved:

• Apple App Store / Google Play — app distribution and optional crash statistics governed by Apple or Google
• RevenueCat — subscription and purchase receipt handling (HVAC Load Calculator, A2L Safe Charge when applicable)
• TelemetryDeck — optional, opt-in anonymized analytics (HVAC Load Calculator only)
• Google AdMob — advertising in the free version of A2L Safe Charge
• Apple iCloud — optional cross-device project sync on iOS (HVAC Load Calculator)

None of these services receive your project or calculation content from us. Their use of any data they collect is governed by their own privacy policies.

Children’s privacy

These apps are professional field tools for qualified HVAC technicians. They are not directed to children under 13, and we do not knowingly collect personal information from children.

Changes to this policy

If our data practices change, we will post an updated policy on this page with a new “Last updated” date. Significant changes may also be noted in app update release notes.

Contact

Questions about this policy or any Product Party HVAC app? Email mike@hvacloadcalculator.online.