A flooded basement averages $10,000-$30,000 in damage. Here's how to know your sump pump is on the way out.
Lifespan
Cheap plastic: 5-7 years. Standard submersible (1/3 HP): 7-10 years. Premium cast iron (1/2 HP): 10-15 years. Over 8 years? Replace.
Warning signs
Strange noises (grinding, rattling — bearing wear). Excessive vibration (damaged impeller). Runs constantly (stuck float or check valve failed). Doesn't run (test by pouring 5 gallons in pit). Visible rust on the body. Short cycles (wears motor — float position wrong or pump undersized).
The math
Preemptive replacement at year 8: $700-$1,100. Replacement after flood: $700-$1,100 PLUS $10,000+ damage and weeks of cleanup.
What we install
Primary: 1/2 HP cast iron submersible (Zoeller, Liberty, Wayne). Battery backup: +$500-$900, runs 6-12 hours during outages. WiFi alarm: $50-100, texts you when water rises. Total system: $1,500-$2,500.