"I live in a house that was built in 1963, the builder used wall cavity between the first and second floor stair way as the return shaft for the furnace. I'd could hear the furnance running louder because of the sound from the air…"
"Where is the duct for the evaporative cooler running. Straight out into the room? or through ducts in attic or the floor. I've seen underslab ducting that had failed... and the dust was actually dirt that was being picked up…"
"I posted an explanation to Liam weeks ago. Since different LED manufacturers may use different chipsets changing brands often means the noise they generated at the time is different.
The original post was almost SIX years ago. That…"
"LED should not be flashing at a rate of about 15/s. They would be VERY old and simple crude designs - with something wrong. The modern electronics that are in an A-19 bulb, take the 120VAC, crank it up to about 350Vdc, then…"
"Sean, if you are in a drought prone or high electric market area... I can see how they would work - if you can't install a demand controlled recirc pump.
FWIW, Last week (October 2017) I spent a week at a Laquinta hotel near the…"
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Charlie Weschler sits down with Grace and Corbett and gives fascinating examples of the complexity of indoor air chemistry. He is an air quality legend, a professor on three continents, and a super nice guy.