SerialCheck: HVAC Age Decoder

SerialCheck: HVAC & Water Heater Age + Model 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, and extract useful model-number details where supported.

Built specifically to replace unreliable web-based lookup resources, SerialCheck works in basements, crawl spaces, attics, and mechanical rooms where cell signals fail. No account required, no ads, and no report-writing clutter — just fast field information you can copy into your inspection report.

KEY FEATURES:

FAST AGE DECODING Translate complex manufacturer serial numbers into manufacture dates.

MODEL NUMBER FIND SPECS For supported brands, decode useful model-number details such as equipment type, nominal capacity, efficiency class, product tier, voltage, refrigerant, fuel type, water heater capacity, and tankless/tank format.

100% OFFLINE DECODING Core decoding data is stored locally on your device. No internet connection is required for normal decoding.

GUIDED ENTRY Select the appliance type, choose the brand, and enter the model and serial information.

COPY & SHARE Copy decoded results for easy use in inspection reports, service notes, and property records.

PRIVACY-MINDED No required login, no ads, and no selling user data.

SUPPORTED APPLIANCES & COVERAGE:

WATER HEATERS Age decoding for major water heater brands including Rheem, Bradford White, AO Smith, Richmond, State, Kenmore, Whirlpool, American Water Heater, Reliance, Ruud, Mainstream, Navien, Rinnai, and many others.

Water heater model-number Find Specs is available for supported brands such as Bradford White and Rheem.

FURNACES Age decoding for major furnace brands including Carrier, Bryant, Payne, Lennox, Armstrong, Goodman, Amana, Trane, American Standard, York, Coleman, Heil, Tempstar, and more.

OUTDOOR AC UNITS & HEAT PUMPS Age decoding for major outdoor HVAC brands including Goodman, Lennox, Rheem, Trane, Carrier, York, Bryant, Ruud, American Standard, and other major manufacturers.

Outdoor HVAC model-number Find Specs is available for supported brands including Carrier, Goodman, Lennox, and Trane.

IDEAL FOR:

HOME INSPECTORS Get manufacture dates and useful equipment details for professional reports.

PROPERTY MANAGERS Track appliance and HVAC equipment age across a portfolio.

SERVICE PROFESSIONALS Identify unit age and basic equipment specs to support repair-or-replace conversations.

Stop relying on slow, outdated websites. SerialCheck gives you fast, field-ready appliance and HVAC decoding so you can get the information you need and move on.

NOTES: SerialCheck focuses on manufacturer serial-number age decoding and selected model-number specification decoding. Supported model-number details vary by brand and appliance type. Results should be verified against the equipment rating plate when needed. 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.