SerialCheck: HVAC Age Decoder

Swamp Ventures LLC

In-app purchases

About this app

SerialCheck: HVAC & Water Heater Age + Model Decoder

SerialCheck is an offline-first tool 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. For supported brands, SerialCheck can also extract useful model-number details such as equipment type, nominal capacity, efficiency class, voltage, refrigerant, fuel type, and water heater capacity.

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

KEY FEATURES

FAST AGE DECODING
Translate manufacturer serial numbers into manufacture dates.

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

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 use in inspection reports, service notes, and property records.

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

SUPPORTED APPLIANCES

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

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

FURNACES
Age decoding for major 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 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
We collect limited app performance data such as device type, OS version, app version, and coarse location derived from public IP address. This helps us understand device usage, active versions, and general app performance. This data is retained for up to 90 days on servers we control.

We use Google Firebase Analytics for anonymized usage data, including screen views, to understand which features are used and how often.

If you contact support, you may provide your name and email address so we can reply. Support emails are not used for tracking and 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.

What’s new

Fix: Updated logic to handle older Ducane gas furnace serial number decodes.
New: Feedback option for serial numbers that do not decode
New: Specs from model number for Bradford-White and Rheem water heaters.
New: Specs from model number for Outdoor AC equipment - Carrier, Goodman, Lennox, and Trane.