ToolkitLoop vs Age by Serial Number

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

ToolkitLoop compared with Age by Serial Number
Detail	ToolkitLoop	Age by Serial Number
What it does	Fast, free, private online tools for everyday tasks	Find how old a water heater, furnace or air conditioner is from its serial number
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	PDF compression	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
What makes it different	All tools run locally in the browser without uploads Fast, distraction-free interface with no unnecessary steps Focused on one task per tool, handled well Growing collection with tools across five categories	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
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)	9 −1 (down) since last check	1 no change since last check
Trust Flow (Majestic)	5	1
Citation Flow (Majestic)	23	17
Referring domains (Majestic)	13	4

4 details filled in for both companies.

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