Podcast Episode 746: Steam Humidifiers, Hydraulic Drivers, and Changes in Construction

A recent podcast touched on a few things worth knowing if you're thinking about home upgrades. One listener in Reno described a problem worth watching for: after sealing up his crawlspace (a common energy-efficiency fix that stops outside air, moisture, and gas from leaking into the house from below), his indoor humidity dropped sharply in winter, from 60 percent down to 23 percent. Steam humidifiers, a common fix for dry indoor air, turned out to use a lot of electricity. He switched to a standalone evaporative humidifier that uses a fan and rotating paddles to add moisture to the air, drawing just 2.8 watts on medium speed, and it raised his humidity to a more comfortable 33 percent. The lesson for anyone doing a crawlspace or basement seal-up: it can change your indoor humidity more than you'd expect, and the standard fix (steam) isn't the cheapest one to run.

The episode also covered a new type of impact driver that uses hydraulic or oil pressure instead of a hammering mechanism, making it quieter than standard impact drivers. Fine Homebuilding plans a full comparison test of these tools in an upcoming print issue. This is a tool-shop detail more than a homeowner decision, but it may show up in future coverage of contractor equipment.

Finally, a listener asked how home-building practices have changed over the ten years the podcast has run, prompting the hosts to reflect on shifts in materials, wall assemblies, and techniques since 2016. No specifics on what's changed were given in this episode.