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Age by Serial Number vs List Matcher

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Age by Serial Number compared with List Matcher
DetailAge by Serial Number logo Age by Serial NumberList Matcher logo List Matcher
What it doesFind how old a water heater, furnace or air conditioner is from its serial number Compare two lists to find differences, matches, and near-duplicates
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFree Free
PricingNot given Not given
Key features
  • Water heater serial number decoders for Bradford White, A.O. Smith, State, American, Whirlpool, Rheem, Ruud, Lochinvar
  • Furnace and air conditioner decoders for Goodman, Amana, Lennox, Carrier, Trane, American Standard
  • Water heater and furnace error code lookups
  • Water heater sizing calculator for tank and tankless models
  • Rheem water heater status light meanings
  • Goodman furnace LED flash code reference
  • Rinnai V53De tankless water heater code lookup
  • Rheem tankless water heater code lookup
  • Support for multiple file formats: XLSX, XLS, ODS, CSV, TXT, and spreadsheet pastes
  • Multiple output formats: side-by-side, combined, items only, or whole rows
  • Copy or download results as TXT or CSV
  • Save workflow settings on device for repeated comparisons
  • View match details to inspect source rows and matching rules applied
  • Processes lists in browser without uploading data
  • Handle large datasets: test with 100,000 or 1,000,000 lines
What makes it different
  • Independent reference not affiliated with or endorsed by any manufacturer
  • Distinguishes manufacture date from installation date and emphasizes condition and maintenance over age
  • Covers safety guidance including gas smell warnings and professional contractor recommendations
  • All processing happens in your browser, so your lists never leave your device
  • Free to use with no sign-up required
  • Flexible matching rules that adapt to your data: case sensitivity, spaces, hidden characters, and leading zeros
  • Works with data from Excel, Google Sheets, and plain text without any conversion needed
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)1 no change since last checkNot checked yet no change since last check
Trust Flow (Majestic)10
Citation Flow (Majestic)170
Referring domains (Majestic)40

4 details filled in for both companies.

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