Can ERVs actually dehumidify a home? And does it ever make sense to use a dehumidifier in a vented crawlspace? Two listener questions spark a lively—and slightly ruthless—discussion that leads to one of Steve’s classic lines: “Suck it up, buttercup!”

The crew digs into how moisture really behaves in dry climates, what ERVs can and cannot do when it comes to latent load management, and why dehumidification strategies that work in one climate can be completely wrong in another. They also unpack the challenges of managing moisture in vented crawlspaces and why adding equipment isn’t always the right answer.

Along the way, the conversation takes an important turn into floodplain construction, with a great discussion—and a must-read resource—on FEMA breakaway walls and how they intersect with moisture management and durability. Plenty of tough love, plenty of building science, and lots of useful takeaways despite the rough ride.

PETE'S RESOURCES:
- "Dealing with Moisture of Construction" (GBA)
- Do ERVs really manage interior sources of moisture? (GBA Q&A)
- "Understanding & Measuring Humidity" (GBA)
- "Household Sources of Moisture" (GBA)
- "Design & Construction for Breakaway Walls" (FEMA)