"I guess I don't understand what you mean by factual studies -- I would think comparing actual energy use to projections from the ratings across many thousands if homes and then also looking over multiple years would be considered a factual…"
"Ed- I didn't comment because you nailed it in your first comment (mystically de-levitate!).
Sorry Bud, but hot air rises and cold air falls. It's fine if you want to push people to say both instead of just the hot air part, but I've…"
I think I can answer this one as well. The pressure will equalize pretty much instantly in all of the building cavities. The only exception would be for cavities that are extremely tight -- as in much less than even 1 CFM50 of…"
"This concern is rather silly. The pressure difference created across the ear by a blower door is on the order of what an elevator ride up 3 floors would create or sliding diwn a tall slide. It's much smaller than taking an elevator up a high…"
I just have to chime in here - the dP across the pressure pan has nothing to do with how leaky the outlet is. When covered by the pressure pan the outlet leak has no flow - it has become a pressure tap into the wall cavity. The pressure is…"
ACI (Affordable Comfort, Inc.) is a nonprofit organization providing cutting-edge information, education and best practices in the area of residential building construction known as home performance and weatherization. Through national and regional educational and networking events, ACI provides innovative building science knowledge presented by renowned industry experts focused on advancing residential energy efficiency nationwide. It is our…See More
"Hi, I'm a HERS rater, THC participant, CA Title 24 energy plans examiner, etc, and saw your talk at ACI. Might you be able to make your Simple energy modeling software (I think you said it was a spreadsheet) available for my/our use.…"
"a slightly more polite answer gets a reply to your questions:
TK> For me, 5% of total consumption (not just heat) would mean less than $50 a year. Do you think it would be fair to say this savings is so small as to be a rounding error?…"
"True proof of savings is logging temperatures" ? really -- I thought true proof of savings is measuring energy use before and after in large scale studies. Isn't it energy savings we are after -- it seems like measuring…"
When you declare the laws of physics or thermodynamics wrong then it should be up to you to provide some evidence to support your beliefs. But I'll give you the benefit of the doubt. I certainly agree that energy models are…"
"If you check out the more recent research (e.g., from FSEC and ECW) on AC sizing and read the recent Proctor article in Home Energy you will see that there isn't much energy penalty even for oversizing cooling systems. Your claims about…"
"It seems like you have some sort of aversion (hostility?) to controlling temperatures in homes yet some sort of faith-based belief in the benefits of right-sizing and multi-stage equipment. I've got some data on thousands of homes (and…"
"It seems like you are saying that setting back the temperature when you sleep or are away does not save energy -- at least if what you mean by "gaming operation" is temperature setback. I've performed multiple studies for…"
Linda Wigington distinguished between deep retrofits & deep energy reductions, thus expanding the range of strategies & tactics from which we might propose when engaging with people, the ones who choose.See More
Hi, I'm a HERS rater, THC participant, CA Title 24 energy plans examiner, etc, and saw your talk at ACI. Might you be able to make your Simple energy modeling software (I think you said it was a spreadsheet) available for my/our use. I'd love to be able to show better prediction (retrodiction) of energy bills for my clients, some of whom have complained that the HERS Whole House reports are pretty far off, just like you said. Many thanks.
Real estate professionals who understand the basics of solar and know how to market the benefits of an installation will have a market edge. For most real estate agents and appraisers, assessing the value of solar is a new…
Energy Upgrade California offers rebates up to $6,500.00 in SDGE territory. Up to $4,500 in other territories. Unfortunately they don't/won't promote it. I can't get straight candid answers from the contractors supporting the program. Only…