Green Building

Pinless Moisture Meters

Subtitle:  How to use them — and how not to use them Images: 

I got a call the other day from a builder client, who said, “Hey Peter, a new homeowner of mine is super-worried about moisture and mold and is getting scary readings with his pinless moisture meter. Help!”

Pinless moisture meters read from the surface of any material, using an electromagnetic field. Feedback from this field provides information to estimate moisture content. These meters are called “capacitance-based” meters, while pin-type moisture meters are called “resistance-based” meters.

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The Important Stuff You Need to Know About Ceiling Fans

Prime:  prime Subtitle:  Here are a few basic principles that many people don’t understand Images: 

Here we are in the middle of air conditioning season.  So why don't we chop down some myths and misconceptions about ceiling fans?

What got me on to this topic was a video of a fan with blades that hide on top of the fan when the fan is turned off. Sounds clever, but it's a ridiculous idea.

Anyway, here are seven things about ceiling fans that a lot of people seem not to know.

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An Update on the Residential Ventilation Debate

Prime:  prime Subtitle:  Here’s what you missed at the ASHRAE 62.2 committee meeting last week Images: 

It's been a while since I've written about what I had been calling "The Great Ventilation Debate" back when Joe Lstiburek was battling the ASHRAE 62.2A standard for residential mechanical ventilation systems established by the American Society of Heating, Refrigerating, and Air-Conditioning Engineers. Among other requirements, the standard requires a home to have a mechanical ventilation system capable of ventilating at a rate of 1 cfm for every 100 square feet of occupiable space plus 7.5 cfm per occupant. residential ventilation committee. The 62.2 committee meets in person twice a year at the two ASHRAEAmerican Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE). International organization dedicated to the advancement of heating, ventilation, air conditioning, and refrigeration through research, standards writing, publishing, and continuing education. Membership is open to anyone in the HVAC&R field; the organization has about 50,000 members. conferences, and they just met last Friday and Saturday in Houston, Texas.

A few things have happened over the past few years, so let me give you a brief update.

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