SerialCheck: HVAC Age Decoder

SerialCheck: Professional HVAC & Water Heater Age Decoder SerialCheck is a streamlined, offline-first tool designed for residential home inspectors, property managers, and service professionals. Quickly determine the age of furnaces, water heaters, and outdoor AC units by decoding manufacturer serial numbers instantly. Built specifically to replace unreliable web-based resources, SerialCheck works in basements, crawl spaces, and mechanical rooms where cell signals fail. No logins, no ads, and no data tracking--just the answers you need to complete your report. KEY FEATURES: FAST AGE DECODING: Instantly translate complex serial codes into manufacture dates. 100% OFFLINE: No internet required. All data is stored locally on your device. GUIDED ENTRY: Simply select the appliance type and enter the serial information. COPY & SHARE: Easily copy results to your clipboard for inspection reports. PRIVACY FIRST: No user accounts, no subscriptions, and no data collection. SUPPORTED APPLIANCES & COVERAGE: WATER HEATERS (90%+ US Market Coverage) Brands include: Rheem, Bradford White, AO Smith, Richmond, State, Kenmore, Whirlpool, American Water Heater, Reliance, Ruud, Mainstream, Navien, Rinnai, and many others. FURNACES (75%+ US Market Coverage) Brands include: Carrier, Bryant, Payne, Lennox, Armstrong, Goodman, Amana, Trane, American Standard, York, Coleman, Heil, Tempstar, and more. OUTDOOR AC UNITS Brands include: Goodman, Lennox, Rheem, Trane, Carrier, York, Bryant, Ruud, American Standard, and other major manufacturers. IDEAL FOR: HOME INSPECTORS: Get accurate manufacture dates for professional reports. PROPERTY MANAGERS: Track appliance lifespans across a portfolio. SERVICE PROS: Identify unit age to guide repair vs. replace conversations. Stop relying on slow, outdated websites. SerialCheck is the fast, one-time purchase tool that helps you get the job done and get out of the utility room. NOTE: This app is focused on age decoding. It does not provide tonnage, SEER ratings, or system specifications. Bosch and Nortek family products are currently not supported. Privacy Here is what we collect and why: App performance data: device type, OS version, app version, and coarse location derived from public IP address. This helps us understand where the app is being used, which devices are in use, and which app versions are active. This data is retained for up to 90 days on servers we control. Google Firebase Analytics: anonymized usage data, including screen views, used to understand which features are used and how often. Support contact information: if you contact support, you may provide your name and email address so we can reply. We do not use support emails for tracking. Support emails are deleted when no longer needed, or within 2 years. Safety We use analytics and operational data to detect abuse, scraping, misuse, and other activity that could interfere with the app or our systems.