"If you have a microwave oven in the same approximate area - repeat some of the tests with the microwave (using covered microwave save pans) I think you see numbers that are in the same range.
I suspect you could see some of the…"
"Comment for Rob concerning window AC units.
Outside air and inside air don't mix in most of the window units. If you look at the window unit and the filter that they use on it... It's like a MERV 0 or maybe -1....…"
The Healthy Indoors group is focused on indoor air quality (IAQ), mold, moisture control, radon, lead, air duct cleaning & HVAC hygiene, and building performance/ building science-related topics that affect the healthiness of our indoor environments, like air leakage.See More
"They do meet UL standards, different UL standards, but not for alarm systems that call fire departments.
The CO detectors that are commonly used - are last ditch before people die alarms. The save lives, but do not…"
"It's amazing to see how much junk are in some types of ducts. I doubt anyone except the original owners would every think of checking and cleaning out the duct. Many would not understand what its for - and worse someone else may see…"
"If the unit has a RTU, is it by any chance bring in fresh air from outside that has not been humidified? In many of those high rise designs - they may be some kind of ERV that is supposed to capture and transfer some of the the humidity…"
"CO isn't adsorbed by activated charcoal filters. There are other compounds that result while cooking - even on electric stoves - and I don't know anyone that has done extensive testing of food groups and which emissions are…"
"This is an old query that you had made six months ago, but it is worth commenting on that second to the last paragraph.
"The gradual disappearance of natural draft appliances (those with chimneys) and the availability of consumer carbon…"
"It's possible that the location that you've setup the Dylos will not be actually capture an "accurate" particulate count. Bear with me a moment. Since you mentioned multiple different configurations (outside…"
"Photocatalytic materials often have titanium oxide or other substances in them as part of the trigger to break down materials when hit with the UV in the sunlight. Adding to paint - is generally an ineffective ensure the proper application of…"
"Radiant barriers - especially paints and foils... have been tested many times by various labs and shown to be less than cost effective. Then simply good old fashion insulation and air sealing.
As for new special radiant materials.... indeed…"
"I had noted, and show with graphs that there was some cooling because of the shading of panels. But it was small compared to the reduction as a result of insulation - more insulation and not just code minimum.
The original posters was from the…"
"Generally when PV modules are added to a roof, the installers are supposed to ensure that AT LEAST fifteen years remain on the roofs life span (more likely they'd look for 20 years).
It would be difficult to do an adequate job that a roofer…"
"PV modules are going to be in full sunlight (if possible), worrying about the heat on panels is secondary to the good sunlight and secure mounting on the roof.
The original post is now nearly three years ago, at the time he was…"
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