Buying guide

The second-hand appliance buying checklist

Nov 16, 2026 · 7 min read

A used appliance can be a spectacular deal — machines outlive their first owners' needs all the time, and someone else's kitchen remodel is your discount. It can also be someone else's repair bill with extra steps. The difference is a checklist, applied before money changes hands. This one leans on the same lifespan math as our repair-or-replace calculator, because a used machine is really a machine with fewer years left and no warranty.

Key takeaways

Date-code it first: the serial plate encodes manufacture age; with NAHB lifespans of 9–15 years, "barely used, 8 years old" means the machine is deep into its statistical life.
Price = remaining life: a fair used price tracks the years left, not the original MSRP discount.
Run everything, in person, before paying: every cycle mode, every burner, heat, drain, spin, door seal.
Gas appliances: qualified installation only — utility guidance leaves no DIY version of that sentence.
Old refrigerators are expensive to run: 15+ year-old units can cost ~$95/yr more than new certified models (ENERGY STAR).

Before you go: the price math

Used-appliance value is remaining-lifespan value. Take the machine's age from the sourced table (washer 10, dishwasher 9, fridge 13, dryer 13, gas range 15...), subtract from the expected life, and price the purchase against the years you're buying. Example: a 7-year-old washer with 3 statistical years left, priced at $250, costs $83/year before any repairs; a $600 basic new washer over 10 years costs $60/year with a full warranty. That's the whole analysis — the used machine must be cheap enough to beat new per remaining year, because you're also absorbing the repair risk a warranty would cover. Factor delivery: trucks and stairs cost real money, and many sellers price "you haul" without saying so.

The in-person checklist

Serial plate / date code — confirm the age the listing claims (Mr. Appliance suggests searching the model's date-code convention).
Run a full cycle or function test: washer fills, agitates, spins, drains; dishwasher fills and sprays; dryer heats and tumbles; every burner lights; oven reaches temperature.
Listen: new grinding, squealing or knocking sounds on spin/heat are bearing and motor talk — expensive classes.
Leaks and rust: check under and behind; water stains on the floor around the machine tell yesterday's story.
Door seals and gaskets: fridge and dishwasher gaskets should be supple and magnetic; torn washer door boots leak.
Error codes: ask to see it power on clean; codes displayed at handover are the machine testifying.
Cords and hoses: intact, unspliced, un-kinked; a replaced cord done badly is a fire risk.
Recall check: search the model on the CPSC recalls site — recalls can mean free manufacturer repairs even for second owners.
Why is it for sale? remodeling is a good answer; "it started making a noise" is the machine testifying again.
Parts availability: a quick search for the model's most common failure part — if it's discontinued, treat the machine as disposable.

Category notes

Refrigerators: run the energy math before falling in love — ENERGY STAR's ~$95/yr figure for 15+ year-old units turns a "free" garage fridge into a subscription. Dishwashers: at a 9-year lifespan, used ones are usually nearly spent; only very young refurb units make sense. Microwaves: skip used entirely — aged magnetrons, unknown door alignment (a radiation-safety issue), and new ones are cheap. Gas anything: buying is fine; installing and connecting is licensed-technician work under utility guidance — factor that install cost into the price. Water heaters: almost never worth buying used — a tank is a countdown, and you can't see inside it.

The two non-negotiables

One: no gas connection work — utilities require qualified service technicians for installing and servicing gas appliances, and a leak isn't a bargain. Two: no test purchase without a run test. If the seller won't demonstrate the machine working, the price is for a mystery box.

Sources

NAHB / Bank of America, Study of Life Expectancy of Home Components (Feb 2007) — lifespan inputs.
Mr. Appliance, life-expectancy chart + date-code guidance — mrappliance.com.
ENERGY STAR refrigerators — 15+ yr units ~$95/yr extra running cost — energystar.gov.
CPSC recalls — cpsc.gov/Recalls.
Texas Gas Service, appliance safety — qualified-technician requirement.