Diagnostic Guide
Why Does My Garage Smell Musty?
A musty garage smell usually indicates damp materials, trapped humidity, or water entering around the slab, walls, or stored items.
SmellMoisture
Home system
Garage problem guides
Garage-specific moisture, odor, door, slab, and equipment problems. Start with a symptom or use the Problem Finder when you are not sure which guide fits.
Use the Problem FinderPublished guides
Start here
Safety Reference
Why Is There Water Under My Water Heater?
Water beneath a water heater may come from condensation, nearby plumbing, a valve, or a leaking tank. Identify the source without unsafe contact.
LeakingMoistureHeat