HVAC, Mechanicals

Moisture Management Design Rule 2: Manage Condensation

Condensation is when moisture in the air hits a cool enough surface to convert the vapor into water.

Mechanical Ventilation: 7 Minutes of BS


As houses are built tighter, they exchange less air between inside and outside. This saves energy, but the inside air can get stale if you don't have a fan and a plan

The Basics of Residential Electrical Systems


The first in a series of 'Basics' videos on residential electricity. This one is on receptacles.

9 Ways to Hide a Minisplit


These mighty-mites can provide heating, cooling, and air-mixing for a well-insulated house, but they look so darned—European. It is hard for many Americans to warm up to them.  


Airtight Dropped Soffit for Ducts, Fans, or Can Lights


Keep mechanical equipment within the envelope to improve the quality of houses and homes

Stack Effect: 7 Minutes of BS (#buildingscience)


Stack effect is relentless: it is always working, when you’re awake or asleep, even during blackouts. And it feeds on itself.


The Right Way (and a wrong one) To Flash a Dryer Vent

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Holes in walls amount to big walls full of holes unless you seal the hole after you make it

Commercial Kitchen Exhaust Fan Basics


Floor plan dictates hood placement, roof framing dictates fan placement

The What, Why, Where, and How of Blower Door Testing

John Straube is excited about blower doors!

Everything there is to know (well, almost) about blower door testing with a few engineer-y jokes along the way.