Tom DelConte's Blog – August 2012 Archive (1)

The Most Awaited Thermal News of Summer 2012!

It's out! The news you were waiting for! It's not from the Feds, since they gave up on thermostats three years ago, finding them too difficult to test! Some independent agency did it, and it's still a mystery:

User friendly thermostats report

Venstar(top three) & Nest(top three?) are mentioned, but who are the others? Is Lux at the…

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Added by Tom DelConte on August 1, 2012 at 1:30pm — No Comments

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David Butler replied to Don Fugler's discussion joining ducts in the group HVAC
"Static pressure drop through a straight length of pipe is a function of friction rate, and friction…"
47 minutes ago
Sean Wiens replied to Don Fugler's discussion joining ducts in the group HVAC
"Apparently the air passing over the PVC creates a strong static field that in turn impedes air flow."
1 hour ago
David Butler replied to Don Fugler's discussion joining ducts in the group HVAC
"Why would you think PVC has high resistance?"
1 hour ago
Sean Wiens replied to Don Fugler's discussion joining ducts in the group HVAC
"Thanks David - I was going to look at PVC for the HRV but was cautioned against it, not because of…"
1 hour ago
David Butler replied to Don Fugler's discussion joining ducts in the group HVAC
"Great post, Sean. I agree that screws are wise when joining metal ducts, but its also true that…"
2 hours ago
David Butler posted a discussion

Welcome Home Performance Forum Members (formerly RESNET BPI - Energy Audit and Home Performance)

Last month the Home Performance Forum merged with Home Energy Pros, now under the Home Performance…See More
2 hours ago
Sean Wiens replied to Don Fugler's discussion joining ducts in the group HVAC
"Various studies have indicated very little air flow along surface of duct (for ventilation - have…"
3 hours ago
Dara Bowser replied to Don Fugler's discussion joining ducts in the group HVAC
"Hi Don. We have never considered screws as impeding airflow, but I can see how in some ducts (e.g.…"
4 hours ago

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