Appliance repair or replace? The 50% rule and the age table

The dryer dies on a Sunday and the decision arrives with it: pay a technician $250–450 to fix a machine you already own, or pay $700–1,200 for a new one? Most people decide emotionally — either 'never throw good money after bad' or 'repairing is always cheaper' — and both instincts lose money half the time. The right frame is simple: compare the repair cost against the value of the machine's remaining life, not against the price of a new one.

The 50% rule (with an age adjustment)

The classic technician's heuristic: if the repair costs more than 50% of replacement, replace. It's a decent start, but age does the real work. A better version: multiply. If the appliance is past 50% of its expected lifespan AND the repair exceeds 50% of replacement cost, replace. A $400 compressor repair on a 3-year-old $1,200 fridge (25% of life used, repair 33% of replacement) is clearly worth it; the same repair on a 13-year-old fridge is buying a very expensive year or two.

Adjustments the rule doesn't capture

• Failure type matters: belts, igniters, elements, thermostats, and pumps are honest one-off repairs; sealed-system leaks (fridges), drum bearings (washers), and control-board cascades are 'the machine is telling you something.'
• Cheap DIY first: dryer heating elements ($30–60 part), oven igniters ($20–50), fridge door gaskets, and washer inlet valves are genuinely amateur-fixable with a model number and a video — always price the part before booking the $100–150 diagnostic visit.
• Efficiency swing: replacing a 12-year-old fridge or top-load washer saves real utility money ($40–120/year), tipping borderline cases toward replacement; a 12-year-old dryer, much less so.
• The diagnostic fee is sunk strategically: many companies credit it toward the repair — ask before booking, and get the quote itemized (parts vs. labor) so you can sanity-check it.
• Check for secret warranties: sealed-system parts on fridges often carry 5–10 year manufacturer coverage even when the machine's general warranty is long dead; your credit card may have doubled the original warranty too.

If you replace, don't overbuy the replacement

Appliance reliability data consistently shows the feature-heavy end of each product line fails more — more electronics, more sensors, more $350 control boards. The reliability sweet spot is usually the simpler mid-range model from a high-reliability brand, and the price gap funds years of your maintenance budget. Buy on total cost: purchase price, expected reliability, energy use, and — increasingly — parts availability and repairability, which some manufacturers are meaningfully better at than others.

The decision, compressed into four steps

1. 1
   Date the machine

   Serial number lookup or purchase records. Compare against the lifespan table — past 50% of expected life changes every answer that follows.

2. 2
   Name the failure

   Belts, elements, igniters, pumps: honest one-off repairs. Sealed systems, bearings, control-board cascades: the machine announcing retirement.

3. 3
   Price the part before the visit

   A model number and ten minutes online prices the part; many failures are $20–60 parts with $200 service wrappers. DIY-able failures skip the whole decision.

4. 4
   Apply the 50/50 gate

   Past half its lifespan and repair over half of replacement: replace, off-season if possible, open-box if available. Otherwise: repair and run the maintenance list so you're not back next year.

A timing note that saves real money on the replacement side: appliances follow a discount calendar. New models land in fall for most categories (May for refrigerators), which puts the deepest discounts on outgoing models in September through November and around every major holiday weekend. A household that can limp a dying dryer along for three weeks — or simply line-dries until the sale — routinely saves 20–35% versus the day-it-died emergency purchase at full price plus expedited delivery. The 50% rule tells you whether to replace; the calendar tells you when.

Keep the receipts and repair records with your house documents, too — a fleet history tells you at a glance which machines are living on borrowed time, and it hands the next owner proof the kitchen was cared for.

The bottom line

Run every breakdown through the same gate: how old is it against the lifespan table, what fraction of replacement does the repair cost, and is the failure a one-off part or a systemic symptom? Repair young machines with honest failures, replace old machines with expensive ones, DIY the cheap parts, and put the extended-warranty money in your own fund. The goal isn't loyalty to any machine — it's paying the lowest cost per remaining year of clean clothes and cold food.