Age by Serial Number vs Live Clock Online

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 Live Clock Online
Detail	Age by Serial Number	Live Clock Online
What it does	Find how old a water heater, furnace or air conditioner is from its serial number	Real-time digital clock with seconds, date, and timezone display for any screen
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Free	Free
Pricing	Not 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	Real-time seconds display that updates continuously Full screen mode for distraction-free viewing Four visual templates: Digital, Mono, Classic, and Analog Five color themes including Vaporwave, Matrix, and Amber Timezone selection for eight major cities Wake Lock feature to keep screen awake Local browser storage for preferences without account Toggles to hide seconds and date display Works on desktop, mobile, tablet, and projector No ads, popups, or account requirements
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	Uncluttered single-purpose design focused solely on time display No signup, no account, no data collection required Readable from a distance with full screen mode Customizable appearance without affecting accuracy Immediate access with no download or installation needed
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	1 no change since last check	3 no change since last check
Trust Flow (Majestic)	1	4
Citation Flow (Majestic)	17	20
Referring domains (Majestic)	4	7

4 details filled in for both companies.

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