Guide
When to repair vs replace major appliances
Decision rules for refrigerators, washers, HVAC, and water heaters — balancing age, efficiency, refrigerant regime, and safety.
Last updated:
Author: Junyper EditorialReviewed against ASHRAE, NFPA, and manufacturer guidance where applicable.
TL;DR
- Median bands: room/portable AC 8–15 yr; central AC/heat pump 12–17 yr; tank WH 8–12 yr; tankless 15–20 yr with descaling every 12–24 mo.
- When repair exceeds ~50% of replacement and age is past mid-life, replacement usually wins—unless safety or refrigerant economics override.
- R-22 systems 15+ years old with repeat leaks often cost more to nurse one season than to replace with modern refrigerants.
- Safety same-day: gas odors, CO symptoms, arcing, or breached heat exchangers—per NFPA and manufacturer emergency guidance.
Repair versus replace weighs repair estimate, remaining efficient life, safety, parts availability, and energy regression—repeat failures often favor replacement even when a single quote looks tolerable.
Rules of thumb (e.g., repair cost against replacement price and age) are starting points; R-22 phaseout and scarce boards frequently move rational replacement earlier.
Junyper holds serials, install dates, and invoices so those tradeoffs cite your home’s data, not memory, when you work with techs or models.
Table 1. Illustrative median life + replacement cost bands (U.S., verify bids locally)
| Appliance | Median life (yr) | Replacement band (installed) |
|---|---|---|
| Central AC / heat pump | 12–17 | $5k–$14k |
| Gas furnace | 15–20 | $3.5k–$7.5k |
| Tank water heater | 8–12 | $1.2k–$3.5k |
| Refrigerator | 10–18 | $900–$3k |
| Clothes washer | 10–14 | $700–$1.8k |
The replacement threshold
For non-safety failures, compare repair estimate to replacement; if repair exceeds roughly half replacement and the unit is mid-life or older, weigh replacement heavily.
Safety overrides spreadsheets: gas odors, cracked heat exchangers, swollen washer drums, frayed cords—act as emergency, not spreadsheet.
HVAC-specific signals
R-22 equipment is costly to recharge; multiple leaks on old R-22 rigs often justify full replacement with current refrigerants.
Short cycling, rising summer indoor humidity, and utility spikes that track cooling are degradation signatures worth seasonally logging in Junyper.
Water heaters
Tank: rumbling sediment, rusty hot-only water, and wet jacket insulation point to replacement.
Tankless rewards descaling schedules; neglected scale kills exchangers and erodes manufacturer goodwill.
Kitchen workhorses
Failing refrigerator compressors past decade one often track rising kWh—compare measurements or bill trends.
Dishwashers with chronic drain errors may live with pumps; chronic boards can mean exit the platform.
How Junyper helps
Junyper persists model numbers, install dates, and receipts so “how old is this?” stops being folklore.
That record feeds Junyper’s ranked recommendations—so replacements get attention before problems choose the night.