Serial Number Tips & Guides

Expert advice on HVAC age, appliance dates, warranty claims, and repair decisions.

HVAC2024-01-15· 8 min read

How to Read an HVAC Serial Number: A Complete Guide

Learn where to find your HVAC serial number and what each section means. We cover all major brands including Carrier, Trane, Lennox, and Rheem.

HVAC2024-01-20· 6 min read

The 5,000 rule, the 50% rule, and other expert frameworks for deciding when to repair your HVAC and when to cut your losses.

Appliances2024-02-01· 7 min read

Major appliance brands hide manufacture dates in their serial numbers. Here's how to crack the code for the top brands.

Tips2024-02-10· 5 min read

Your serial number is the key to warranty claims. Learn how manufacturers use it to verify purchase dates and eligibility.

Real Estate2024-02-18· 6 min read

Real estate agents and home inspectors look at HVAC age. Learn how to use serial numbers during a home inspection.

Energy2024-03-01· 7 min read

A 15-year-old AC can cost 50% more to run than a new unit. We break down the numbers so you can make an informed decision.

New guides on serial numbers, maintenance, and money-saving decisions.

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