Equipment identification
How long does a furnace last?
A homeowner decision guide to furnace lifespan and replacement timing.
8 min readKeyword: how old is my air conditioner
Updated 7/15/2026Read article
Category
HVAC Equipment
Model numbers, data plates, tonnage, system type, and equipment-identification guidance.
5 published articlesFeatured guide: How to Find an HVAC Model and Serial Number
Pillar Page
How to Find an HVAC Model and Serial Number
Before comparing major HVAC decisions, document the outdoor unit, indoor equipment, thermostat, model numbers, serial numbers, and warranty labels so quote and age questions can be answered accurately.
Intent: Equipment identification8 min readLast reviewed 7/15/2026
Capture equipment type, labels, photos, and model details so AVA can personalize warranty, age, and quote guidance.
Supporting Articles
Build the full decision context
4 supporting articles
Equipment identification
What Is an HVAC Data Plate?
A homeowner guide to HVAC data plates and why they matter.
6 min readKeyword: HVAC data plate
Updated 7/15/2026Read article
Equipment identification
What Does HVAC Tonnage Mean?
A homeowner explanation of HVAC tonnage and why it matters in replacement decisions.
6 min readKeyword: HVAC tonnage by model number
Updated 7/15/2026Read article
Equipment identification
How to Identify Your HVAC System Type
A homeowner guide to identifying whether the home has a furnace, heat pump, split AC system, or another HVAC setup.
6 min readKeyword: what type of HVAC system do I have
Updated 7/15/2026Read article
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